WO2003075469A3 - System and method for antenna diversity using equal power joint maximal ratio combining - Google Patents

System and method for antenna diversity using equal power joint maximal ratio combining Download PDF

Info

Publication number
WO2003075469A3
WO2003075469A3 PCT/US2003/005644 US0305644W WO03075469A3 WO 2003075469 A3 WO2003075469 A3 WO 2003075469A3 US 0305644 W US0305644 W US 0305644W WO 03075469 A3 WO03075469 A3 WO 03075469A3
Authority
WO
WIPO (PCT)
Prior art keywords
power
equal
equal power
antenna diversity
ratio combining
Prior art date
Application number
PCT/US2003/005644
Other languages
French (fr)
Other versions
WO2003075469A2 (en
Inventor
Gary L Sugar
Chandra Vaidyanathan
Original Assignee
Cognio Inc
Gary L Sugar
Chandra Vaidyanathan
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cognio Inc, Gary L Sugar, Chandra Vaidyanathan filed Critical Cognio Inc
Priority to AU2003213558A priority Critical patent/AU2003213558A1/en
Priority to EP03711239A priority patent/EP1543627A4/en
Publication of WO2003075469A2 publication Critical patent/WO2003075469A2/en
Publication of WO2003075469A3 publication Critical patent/WO2003075469A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0204—Channel estimation of multiple channels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/28—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the amplitude
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3036—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
    • H03G3/3042—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers in modulators, frequency-changers, transmitters or power amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3089—Control of digital or coded signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B1/0483—Transmitters with multiple parallel paths
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H04B7/046—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account
    • H04B7/0465—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account taking power constraints at power amplifier or emission constraints, e.g. constant modulus, into account
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0667—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal
    • H04B7/0669—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal using different channel coding between antennas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0667—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal
    • H04B7/0671—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal using different delays between antennas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/0842—Weighted combining
    • H04B7/0845—Weighted combining per branch equalization, e.g. by an FIR-filter or RAKE receiver per antenna branch
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/0842—Weighted combining
    • H04B7/0848—Joint weighting
    • H04B7/0854—Joint weighting using error minimizing algorithms, e.g. minimum mean squared error [MMSE], "cross-correlation" or matrix inversion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/0842—Weighted combining
    • H04B7/0848—Joint weighting
    • H04B7/0857—Joint weighting using maximum ratio combining techniques, e.g. signal-to- interference ratio [SIR], received signal strenght indication [RSS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/03433—Arrangements for removing intersymbol interference characterised by equaliser structure
    • H04L2025/03439—Fixed structures
    • H04L2025/03445—Time domain
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity

Abstract

An equal power composite beamforming technique which constrains that the power of the signal output by each antenna is the same, and is equal to the total power of the transmit signal divided by the number N of transmit antennas from which the signal is to be transmitted. By reducing output power requirements for each power amplifier, the silicon area of the power amplifiers are reduced by as much as N time (where N is equal to the number of transmit antennas) relative to a non-equal power CBF.
PCT/US2003/005644 2002-03-01 2003-02-26 System and method for antenna diversity using equal power joint maximal ratio combining WO2003075469A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2003213558A AU2003213558A1 (en) 2002-03-01 2003-02-26 System and method for antenna diversity using equal power joint maximal ratio combining
EP03711239A EP1543627A4 (en) 2002-03-01 2003-02-26 System and method for antenna diversity using equal power joint maximal ratio combining

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US36105502P 2002-03-01 2002-03-01
US60/361,055 2002-03-01
US36579702P 2002-03-21 2002-03-21
US60/365,797 2002-03-21
US38013902P 2002-05-06 2002-05-06
US60/380,139 2002-05-06
US10/174,689 2002-06-19
US10/174,689 US6785520B2 (en) 2002-03-01 2002-06-19 System and method for antenna diversity using equal power joint maximal ratio combining

Publications (2)

Publication Number Publication Date
WO2003075469A2 WO2003075469A2 (en) 2003-09-12
WO2003075469A3 true WO2003075469A3 (en) 2004-04-01

Family

ID=32046051

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/005644 WO2003075469A2 (en) 2002-03-01 2003-02-26 System and method for antenna diversity using equal power joint maximal ratio combining

Country Status (5)

Country Link
US (6) US6785520B2 (en)
EP (2) EP2475093A3 (en)
AU (1) AU2003213558A1 (en)
TW (1) TWI233275B (en)
WO (1) WO2003075469A2 (en)

Families Citing this family (113)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7133380B1 (en) * 2000-01-11 2006-11-07 At&T Corp. System and method for selecting a transmission channel in a wireless communication system that includes an adaptive array
US7952511B1 (en) 1999-04-07 2011-05-31 Geer James L Method and apparatus for the detection of objects using electromagnetic wave attenuation patterns
US8363744B2 (en) 2001-06-10 2013-01-29 Aloft Media, Llc Method and system for robust, secure, and high-efficiency voice and packet transmission over ad-hoc, mesh, and MIMO communication networks
US7146176B2 (en) 2000-06-13 2006-12-05 Shared Spectrum Company System and method for reuse of communications spectrum for fixed and mobile applications with efficient method to mitigate interference
US7961589B2 (en) * 2001-09-28 2011-06-14 Intel Corporation System and related methods for introducing sub-carrier diversity in a wideband communication system
US7133461B2 (en) * 2001-12-14 2006-11-07 Motorola, Inc. Stream transmission method and device
ITMI20012685A1 (en) * 2001-12-19 2003-06-19 Cit Alcatel METHOD AND SYSTEM TO DOUBLE THE SPECTRAL EFFICIENCY INHUN RADIO TRANSMISSION SYSTEMS
US6785520B2 (en) 2002-03-01 2004-08-31 Cognio, Inc. System and method for antenna diversity using equal power joint maximal ratio combining
US6687492B1 (en) * 2002-03-01 2004-02-03 Cognio, Inc. System and method for antenna diversity using joint maximal ratio combining
AU2003219882A1 (en) * 2002-03-01 2003-09-16 Cognio, Inc. System and method for joint maximal ratio combining
US6862456B2 (en) * 2002-03-01 2005-03-01 Cognio, Inc. Systems and methods for improving range for multicast wireless communication
US6871049B2 (en) * 2002-03-21 2005-03-22 Cognio, Inc. Improving the efficiency of power amplifiers in devices using transmit beamforming
US20040198276A1 (en) * 2002-03-26 2004-10-07 Jose Tellado Multiple channel wireless receiver
EP1502364A4 (en) 2002-04-22 2010-03-31 Ipr Licensing Inc Multiple-input multiple-output radio transceiver
US6865377B1 (en) * 2002-06-28 2005-03-08 Arraycomm, Inc. Combined open and closed loop beam forming in a multiple array radio communication system
US7342912B1 (en) * 2002-06-28 2008-03-11 Arraycomm, Llc. Selection of user-specific transmission parameters for optimization of transmit performance in wireless communications using a common pilot channel
US20040004951A1 (en) * 2002-07-05 2004-01-08 Interdigital Technology Corporation Method for performing wireless switching
US7031669B2 (en) * 2002-09-10 2006-04-18 Cognio, Inc. Techniques for correcting for phase and amplitude offsets in a MIMO radio device
KR100456454B1 (en) * 2002-10-07 2004-11-09 한국전자통신연구원 Array Antenna System on Mobile Communication
JP4197482B2 (en) * 2002-11-13 2008-12-17 パナソニック株式会社 Base station transmission method, base station transmission apparatus, and communication terminal
US7006810B1 (en) * 2002-12-19 2006-02-28 At&T Corp. Method of selecting receive antennas for MIMO systems
KR100943894B1 (en) * 2002-12-26 2010-02-24 엘지전자 주식회사 Method for transmission diversity in mobile communication system
CN100576772C (en) 2002-12-27 2009-12-30 Nxp股份有限公司 Portable terminal and method thereof with smart antenna
US7983355B2 (en) 2003-07-09 2011-07-19 Broadcom Corporation System and method for RF signal combining and adaptive bit loading for data rate maximization in multi-antenna communication systems
US8185075B2 (en) 2003-03-17 2012-05-22 Broadcom Corporation System and method for channel bonding in multiple antenna communication systems
US7822140B2 (en) * 2003-03-17 2010-10-26 Broadcom Corporation Multi-antenna communication systems utilizing RF-based and baseband signal weighting and combining
US7512083B2 (en) * 2003-04-07 2009-03-31 Shaolin Li Single chip multi-antenna wireless data processor
US7099678B2 (en) * 2003-04-10 2006-08-29 Ipr Licensing, Inc. System and method for transmit weight computation for vector beamforming radio communication
EP1469613A1 (en) * 2003-04-16 2004-10-20 Siemens Aktiengesellschaft Method and transmitter for data transmission in a multi-carrier system over multiple transmit antennas
US7079870B2 (en) * 2003-06-09 2006-07-18 Ipr Licensing, Inc. Compensation techniques for group delay effects in transmit beamforming radio communication
US7409010B2 (en) 2003-06-10 2008-08-05 Shared Spectrum Company Method and system for transmitting signals with reduced spurious emissions
US8391322B2 (en) 2003-07-09 2013-03-05 Broadcom Corporation Method and system for single weight (SW) antenna system for spatial multiplexing (SM) MIMO system for WCDMA/HSDPA
JP4323985B2 (en) * 2003-08-07 2009-09-02 パナソニック株式会社 Wireless transmission apparatus and wireless transmission method
US7394858B2 (en) * 2003-08-08 2008-07-01 Intel Corporation Systems and methods for adaptive bit loading in a multiple antenna orthogonal frequency division multiplexed communication system
DE10337445B3 (en) * 2003-08-14 2005-06-30 Siemens Ag Method for operating a radio communication system, receiving station and transmitting station for a radio communication system
US7366089B2 (en) 2003-10-08 2008-04-29 Atheros Communications, Inc. Apparatus and method of multiple antenna receiver combining of high data rate wideband packetized wireless communication signals
US7385914B2 (en) * 2003-10-08 2008-06-10 Atheros Communications, Inc. Apparatus and method of multiple antenna transmitter beamforming of high data rate wideband packetized wireless communication signals
US8204149B2 (en) 2003-12-17 2012-06-19 Qualcomm Incorporated Spatial spreading in a multi-antenna communication system
US7885178B2 (en) * 2003-12-29 2011-02-08 Intel Corporation Quasi-parallel multichannel receivers for wideband orthogonal frequency division multiplexed communications and associated methods
US20050198233A1 (en) * 2004-01-07 2005-09-08 Microsoft Corporation Configuring network settings of thin client devices using portable storage media
US7657612B2 (en) * 2004-01-07 2010-02-02 Microsoft Corporation XML schema for network device configuration
US7769995B2 (en) 2004-01-07 2010-08-03 Microsoft Corporation System and method for providing secure network access
US20050198221A1 (en) * 2004-01-07 2005-09-08 Microsoft Corporation Configuring an ad hoc wireless network using a portable media device
US20050149732A1 (en) 2004-01-07 2005-07-07 Microsoft Corporation Use of static Diffie-Hellman key with IPSec for authentication
US7336746B2 (en) 2004-12-09 2008-02-26 Qualcomm Incorporated Data transmission with spatial spreading in a MIMO communication system
US8169889B2 (en) * 2004-02-18 2012-05-01 Qualcomm Incorporated Transmit diversity and spatial spreading for an OFDM-based multi-antenna communication system
US8077691B2 (en) * 2004-03-05 2011-12-13 Qualcomm Incorporated Pilot transmission and channel estimation for MISO and MIMO receivers in a multi-antenna system
US7668075B2 (en) * 2004-04-06 2010-02-23 Texas Instruments Incorporated Versatile system for dual carrier transformation in orthogonal frequency division multiplexing
US8923785B2 (en) 2004-05-07 2014-12-30 Qualcomm Incorporated Continuous beamforming for a MIMO-OFDM system
US7497376B2 (en) * 2004-06-08 2009-03-03 Donald M. Landwirth Business method of implementing an automated vault machine
US7769107B2 (en) * 2004-06-10 2010-08-03 Intel Corporation Semi-blind analog beamforming for multiple-antenna systems
CN1977484B (en) 2004-06-28 2012-12-05 三洋电机株式会社 Transmitting method and apparatus thereof
JP2006211726A (en) * 2004-06-28 2006-08-10 Sanyo Electric Co Ltd Transmitting method and apparatus thereof
JP2006050573A (en) 2004-06-28 2006-02-16 Sanyo Electric Co Ltd Transmitting method and apparatus, and receiving method and apparatus
US7738595B2 (en) * 2004-07-02 2010-06-15 James Stuart Wight Multiple input, multiple output communications systems
US7548592B2 (en) * 2004-07-02 2009-06-16 James Stuart Wight Multiple input, multiple output communications systems
US7978649B2 (en) 2004-07-15 2011-07-12 Qualcomm, Incorporated Unified MIMO transmission and reception
US7263335B2 (en) 2004-07-19 2007-08-28 Purewave Networks, Inc. Multi-connection, non-simultaneous frequency diversity in radio communication systems
US7676007B1 (en) * 2004-07-21 2010-03-09 Jihoon Choi System and method for interpolation based transmit beamforming for MIMO-OFDM with partial feedback
US9002299B2 (en) * 2004-10-01 2015-04-07 Cisco Technology, Inc. Multiple antenna processing on transmit for wireless local area networks
US7710587B2 (en) 2004-10-18 2010-05-04 Microsoft Corporation Method and system for configuring an electronic device
GB2419493A (en) * 2004-10-19 2006-04-26 Ict Ltd Communications system utilising feed-back controlled multiple antennas
US8045599B2 (en) * 2005-02-17 2011-10-25 Sony Corporation Selection of training sequences for multiple-in multiple-out transmissions
US7826833B2 (en) * 2005-02-17 2010-11-02 Madhavan P G Channel assay for thin client device wireless provisioning
US8515359B2 (en) * 2005-03-09 2013-08-20 Intel Corporation Method and apparatus to provide low cost transmit beamforming for network devices
US7616588B2 (en) * 2005-03-31 2009-11-10 Microsoft Corporation Simplified creation and termination of an ad hoc wireless network with internet connection sharing
US7567807B2 (en) 2005-04-21 2009-07-28 Kyocera Wireless Corp. Apparatus and method for performing handoff with a mobile station having a smart antenna
US8363577B2 (en) * 2005-05-13 2013-01-29 Qualcomm Incorporated Low complexity beamforming for multiple antenna systems
JP2007013906A (en) * 2005-06-03 2007-01-18 Fujitsu Ltd Receiving device
US20070058603A1 (en) * 2005-08-12 2007-03-15 Samsung Electronics Co., Ltd. Apparatus and method for estimating and reporting a carrier to interference noise ratio in a multi-antenna system
KR100831177B1 (en) * 2005-10-08 2008-05-21 삼성전자주식회사 Apparatus and method for transmitting in smart antenna communication systems
TWI259614B (en) * 2005-10-14 2006-08-01 Realtek Semiconductor Corp Beam forming apparatus applied in multiple input multiple output system and related method
US7466778B2 (en) * 2005-12-22 2008-12-16 Sirf Technology, Inc. Memory efficient OFDM channel estimation and frequency domain diversity processing
US9559871B2 (en) * 2006-01-10 2017-01-31 Alcatel-Lucent Usa Inc. Composite channel equalization of a wideband wireless communication system
JP4583330B2 (en) * 2006-04-21 2010-11-17 三洋電機株式会社 Transmission method and apparatus
US8543070B2 (en) 2006-04-24 2013-09-24 Qualcomm Incorporated Reduced complexity beam-steered MIMO OFDM system
US8055204B2 (en) 2007-08-15 2011-11-08 Shared Spectrum Company Methods for detecting and classifying signals transmitted over a radio frequency spectrum
US8184653B2 (en) 2007-08-15 2012-05-22 Shared Spectrum Company Systems and methods for a cognitive radio having adaptable characteristics
US8326313B2 (en) 2006-05-12 2012-12-04 Shared Spectrum Company Method and system for dynamic spectrum access using detection periods
US7564816B2 (en) 2006-05-12 2009-07-21 Shared Spectrum Company Method and system for determining spectrum availability within a network
US8027249B2 (en) 2006-10-18 2011-09-27 Shared Spectrum Company Methods for using a detector to monitor and detect channel occupancy
US8997170B2 (en) 2006-12-29 2015-03-31 Shared Spectrum Company Method and device for policy-based control of radio
US9538388B2 (en) 2006-05-12 2017-01-03 Shared Spectrum Company Method and system for dynamic spectrum access
US8155649B2 (en) 2006-05-12 2012-04-10 Shared Spectrum Company Method and system for classifying communication signals in a dynamic spectrum access system
US8290089B2 (en) 2006-05-22 2012-10-16 Qualcomm Incorporated Derivation and feedback of transmit steering matrix
US7974360B2 (en) * 2006-05-24 2011-07-05 Qualcomm Incorporated Multi input multi output (MIMO) orthogonal frequency division multiple access (OFDMA) communication system
US8396158B2 (en) * 2006-07-14 2013-03-12 Nokia Corporation Data processing method, data transmission method, data reception method, apparatus, codebook, computer program product, computer program distribution medium
US7787567B2 (en) 2006-09-26 2010-08-31 Intel Corporation Beamforming by antenna puncturing
US9344897B2 (en) * 2007-03-13 2016-05-17 Qualcomm Incorporated Estimating timing and frequency information for multiple channel wireless communication systems
US20080280574A1 (en) * 2007-05-11 2008-11-13 Broadcom Corporation, A California Corporation RF transmitter with adjustable antenna assembly
US8078110B2 (en) 2007-07-09 2011-12-13 Qualcomm Incorporated Techniques for choosing and broadcasting receiver beamforming vectors in peer-to-peer (P2P) networks
US20090022049A1 (en) * 2007-07-16 2009-01-22 Honeywell International Inc. Novel security enhancement structure for mimo wireless network
EP2228934B1 (en) * 2008-01-04 2019-03-06 Sun Patent Trust Radio communication terminal device and radio transmission method
US8958408B1 (en) * 2008-06-05 2015-02-17 The Boeing Company Coded aperture scanning
JP4603062B2 (en) * 2008-06-26 2010-12-22 京セラ株式会社 Signal converter, radio signal transmission system, and radio signal reception system
US7970359B2 (en) 2008-07-29 2011-06-28 Alvarion Ltd. Delay diversity in antenna arrays
EP2319260A2 (en) 2008-08-19 2011-05-11 Shared Spectrum Company Method and system for dynamic spectrum access using specialty detectors and improved networking
US8218690B1 (en) 2008-09-29 2012-07-10 Qualcomm Atheros, Inc. Timing offset compensation for high throughput channel estimation
US8638871B2 (en) * 2008-12-22 2014-01-28 Motorola Mobility Llc System and method for combination multiple input, multiple output (MIMO) and beamforming
US8838051B1 (en) * 2009-02-19 2014-09-16 Qualcomm Incorporated Transmitter beamforming power control
US8264407B2 (en) 2009-02-19 2012-09-11 Qualcomm Atheros, Inc. Transmitter beamforming steering matrix processing and storage
US8861629B2 (en) * 2009-07-31 2014-10-14 Cisco Technology, Inc. Power allocation of spatial streams in MIMO wireless communication system
US8768397B2 (en) 2009-10-02 2014-07-01 Sharp Kabushiki Kaisha Transmission power control on a wireless communication device for a plurality of regulated bands or component carriers
US9059749B2 (en) 2009-10-02 2015-06-16 Sharp Kabushiki Kaisha Antenna port mode and transmission mode transitions
WO2011072305A1 (en) * 2009-12-11 2011-06-16 Maxlinear, Inc. Low-complexity diversity using preequalization
US9007263B2 (en) 2010-09-09 2015-04-14 Qualcomm Incorporated Phase rotation techniques in a multi-user wireless communication environment
US8917787B2 (en) * 2011-03-22 2014-12-23 Hitachi, Ltd. Systems and methods for creating a downlink precode for communication system with per-antenna power constraints
US9209876B2 (en) * 2011-12-30 2015-12-08 Broadcom Corporation Adaptive transmit beamforming
US9094067B2 (en) 2012-09-12 2015-07-28 Mediatek Singapore Pte. Ltd. Method and apparatus for calibrating an envelope tracking system
US9055449B2 (en) 2012-12-03 2015-06-09 Cisco Technology, Inc. Explicit and implicit hybrid beamforming channel sounding
US9848370B1 (en) * 2015-03-16 2017-12-19 Rkf Engineering Solutions Llc Satellite beamforming
US11070414B2 (en) * 2017-09-12 2021-07-20 Telefonaktiebolaget Lm Ericsson (Publ) Communication node and method for generating multicarrier signals by backscattering
CN112953612B (en) * 2021-01-25 2022-11-25 电子科技大学 Maximum ratio combining method and system with time robustness

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6141393A (en) * 1999-03-03 2000-10-31 Motorola, Inc. Method and device for channel estimation, equalization, and interference suppression
US6462709B1 (en) * 1998-12-22 2002-10-08 Sas Technologies Co., Ltd. Signal processing method and apparatus for computing an optimal weight vector of an adaptive antenna array system
US6463295B1 (en) * 1996-10-11 2002-10-08 Arraycomm, Inc. Power control with signal quality estimation for smart antenna communication systems
US6584161B2 (en) * 1999-05-19 2003-06-24 Nokia Corporation Transmit diversity method and system

Family Cites Families (168)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US609934A (en) * 1898-08-30 Tke nor
US4121221A (en) 1977-03-14 1978-10-17 Raytheon Company Radio frequency array antenna system
JPS60214641A (en) 1984-04-10 1985-10-26 Nec Corp Space diversity communication system
US4639914A (en) 1984-12-06 1987-01-27 At&T Bell Laboratories Wireless PBX/LAN system with optimum combining
US4811420A (en) * 1987-07-08 1989-03-07 International Mobile Machines Corporation Initialization of communication channel between a subsciber station and a base station in a subscriber communication system
CA2088753C (en) 1992-02-04 1999-02-16 Tomoki Osawa Point-to-multipoint communication network capable of retransmitting a multicast signal
IL101556A (en) 1992-04-10 1996-08-04 Univ Ramot Multi-channel signal separation using cross-polyspectra
US5274844A (en) 1992-05-11 1993-12-28 Motorola, Inc. Beam pattern equalization method for an adaptive array
US5289499A (en) 1992-12-29 1994-02-22 At&T Bell Laboratories Diversity for direct-sequence spread spectrum systems
US5507035A (en) 1993-04-30 1996-04-09 International Business Machines Corporation Diversity transmission strategy in mobile/indoor cellula radio communications
GB9309353D0 (en) 1993-05-06 1993-06-16 Ncr Int Inc Wireless communication system having antenna diversity
US5437055A (en) 1993-06-03 1995-07-25 Qualcomm Incorporated Antenna system for multipath diversity in an indoor microcellular communication system
US6208135B1 (en) 1994-07-22 2001-03-27 Steve J. Shattil Inductive noise cancellation circuit for electromagnetic pickups
US5414699A (en) 1993-09-27 1995-05-09 Motorola, Inc. Method and apparatus for receiving and decoding communication signals in a CDMA receiver using partial de-correlation
DE4336350A1 (en) * 1993-10-25 1995-04-27 Bosch Siemens Hausgeraete Method for determining the amount of laundry in a laundry treatment machine
US5574967A (en) * 1994-01-11 1996-11-12 Ericsson Ge Mobile Communications, Inc. Waste energy control and management in power amplifiers
US5493722A (en) * 1994-01-24 1996-02-20 Ingersoll-Rand Company Method for controlling data transmissions on a single channel radio frequency network
DE69412288T2 (en) 1994-02-10 1999-04-22 Ibm METHOD AND DEVICE FOR MULTIPLE USER INTERFERENCE REDUCTION
JP2591467B2 (en) * 1994-04-18 1997-03-19 日本電気株式会社 Access method
JP2561028B2 (en) 1994-05-26 1996-12-04 日本電気株式会社 Sidelobe canceller
JP2561031B2 (en) 1994-06-07 1996-12-04 日本電気株式会社 Transceiver
CA2129199C (en) 1994-07-29 1999-07-20 Roger Y.M. Cheung Method and apparatus for bridging wireless lan to a wired lan
CA2129197C (en) 1994-07-29 1999-11-09 Roger Y.M. Cheung Method and apparatus for connecting a wireless lan to a wired lan
CA2137587C (en) 1994-12-08 1999-03-23 Murray Charles Baker Broadcast/multicast filtering by the bridge-based access point
US5771462A (en) * 1995-07-07 1998-06-23 International Business Machines Corporation Bus arbitration infrastructure for deployment of wireless networks
US5610617A (en) * 1995-07-18 1997-03-11 Lucent Technologies Inc. Directive beam selectivity for high speed wireless communication networks
US5854611A (en) * 1995-07-24 1998-12-29 Lucent Technologies Inc. Power shared linear amplifier network
US5751250A (en) * 1995-10-13 1998-05-12 Lucent Technologies, Inc. Low distortion power sharing amplifier network
US6456610B1 (en) * 1995-11-07 2002-09-24 Lucent Technologies Inc. TDM/TDMA wireless telecommunication system with electronic scanning antenna
JP3629077B2 (en) * 1995-12-08 2005-03-16 富士通株式会社 Wireless communication system, base station for wireless communication system, and intermittent power-on type mobile station
US5924020A (en) * 1995-12-15 1999-07-13 Telefonaktiebolaget L M Ericsson (Publ) Antenna assembly and associated method for radio communication device
US6038272A (en) 1996-09-06 2000-03-14 Lucent Technologies Inc. Joint timing, frequency and weight acquisition for an adaptive array
DE69705356T2 (en) 1996-05-17 2002-05-02 Motorola Ltd Method and device for weighting a transmission path
US6157843A (en) 1996-05-31 2000-12-05 Motorola, Inc. Method for pre-establishing communications in a wireless communication network without the use of a multicast server
US5761193A (en) 1996-05-31 1998-06-02 Derango; Mario F. Method for pre-establishing communications in a wireless communication network
US6097771A (en) 1996-07-01 2000-08-01 Lucent Technologies Inc. Wireless communications system having a layered space-time architecture employing multi-element antennas
CA2302289C (en) 1996-08-29 2005-11-08 Gregory G. Raleigh Spatio-temporal processing for communication
US5848105A (en) 1996-10-10 1998-12-08 Gardner; William A. GMSK signal processors for improved communications capacity and quality
US6512481B1 (en) * 1996-10-10 2003-01-28 Teratech Corporation Communication system using geographic position data
GB9621465D0 (en) 1996-10-15 1996-12-04 Northern Telecom Ltd A radio communications system adaptive antenna
US6122260A (en) 1996-12-16 2000-09-19 Civil Telecommunications, Inc. Smart antenna CDMA wireless communication system
US5898679A (en) 1996-12-30 1999-04-27 Lucent Technologies Inc. Wireless relay with selective message repeat and method of operation thereof
US6023625A (en) 1997-02-18 2000-02-08 Ericsson Inc. System and method for reducing multicast interference in a distributed antenna network
US5930248A (en) 1997-03-04 1999-07-27 Telefonaktiebolaget Lm Ericsson Radio communication system selectively using multicast with variable offset time
JP3432697B2 (en) * 1997-04-02 2003-08-04 松下電器産業株式会社 Adaptive reception diversity apparatus and adaptive transmission diversity apparatus
US6044120A (en) 1997-05-01 2000-03-28 Lucent Technologies Inc. Time-varying weight estimation
US6147985A (en) 1997-05-01 2000-11-14 Lucent Technologies Inc. Subspace method for adaptive array weight tracking
US6008760A (en) 1997-05-23 1999-12-28 Genghis Comm Cancellation system for frequency reuse in microwave communications
US6331837B1 (en) 1997-05-23 2001-12-18 Genghiscomm Llc Spatial interferometry multiplexing in wireless communications
US5912921A (en) 1997-08-20 1999-06-15 Intermec Ip Corp. Concurrent multiple data rate communications in a wireless local area network
US6091934A (en) 1997-09-02 2000-07-18 Hughes Electronics Corporation Dynamic power allocation system and method for multi-beam satellite amplifiers
US6058105A (en) 1997-09-26 2000-05-02 Lucent Technologies Inc. Multiple antenna communication system and method thereof
US6006111A (en) * 1997-10-08 1999-12-21 Nortel Networks Corporation Self-balancing matrix amplifier
US6037898A (en) 1997-10-10 2000-03-14 Arraycomm, Inc. Method and apparatus for calibrating radio frequency base stations using antenna arrays
US6118788A (en) 1997-10-15 2000-09-12 International Business Machines Corporation Balanced media access methods for wireless networks
US6185440B1 (en) 1997-12-10 2001-02-06 Arraycomm, Inc. Method for sequentially transmitting a downlink signal from a communication station that has an antenna array to achieve an omnidirectional radiation
US7299071B1 (en) 1997-12-10 2007-11-20 Arraycomm, Llc Downlink broadcasting by sequential transmissions from a communication station having an antenna array
US6625162B2 (en) 1997-12-17 2003-09-23 Canon Kabushiki Kaisha Method and apparatus for data transmission with control over access to a transmission medium
JP3718337B2 (en) * 1998-01-08 2005-11-24 株式会社東芝 Adaptive variable directional antenna
US5982327A (en) 1998-01-12 1999-11-09 Motorola, Inc. Adaptive array method, device, base station and subscriber unit
US6686879B2 (en) * 1998-02-12 2004-02-03 Genghiscomm, Llc Method and apparatus for transmitting and receiving signals having a carrier interferometry architecture
JP3406831B2 (en) * 1998-03-19 2003-05-19 富士通株式会社 Array antenna system for wireless base station
US6252884B1 (en) 1998-03-20 2001-06-26 Ncr Corporation Dynamic configuration of wireless networks
US6889034B1 (en) * 1998-04-02 2005-05-03 Ericsson Inc. Antenna coupling systems and methods for transmitters
US6317466B1 (en) 1998-04-15 2001-11-13 Lucent Technologies Inc. Wireless communications system having a space-time architecture employing multi-element antennas at both the transmitter and receiver
US6615024B1 (en) 1998-05-01 2003-09-02 Arraycomm, Inc. Method and apparatus for determining signatures for calibrating a communication station having an antenna array
KR100275071B1 (en) 1998-06-23 2000-12-15 윤종용 A transceiver for SMART antenna system of mobile telecommunication base station
DE69817630T2 (en) * 1998-06-29 2004-06-03 Nokia Corp. PERFORMANCE CONTROL IN A MULTIPLE-CARRIER RADIO TRANSMITTER
JP3092798B2 (en) * 1998-06-30 2000-09-25 日本電気株式会社 Adaptive transceiver
US6307882B1 (en) 1998-07-10 2001-10-23 Lucent Technologies Inc. Determining channel characteristics in a space-time architecture wireless communication system having multi-element antennas
US6144651A (en) 1998-07-17 2000-11-07 Motorola, Inc. Data transmission within a wireless communication system
US6327310B1 (en) 1998-08-14 2001-12-04 Lucent Technologies Inc. Wireless transmission method for antenna arrays, having improved resistance to fading
JP2000082982A (en) 1998-09-03 2000-03-21 Nec Corp Array antenna reception device
US6157340A (en) 1998-10-26 2000-12-05 Cwill Telecommunications, Inc. Adaptive antenna array subsystem calibration
US6400780B1 (en) * 1998-11-06 2002-06-04 Lucent Technologies Inc. Space-time diversity for wireless systems
US6266528B1 (en) 1998-12-23 2001-07-24 Arraycomm, Inc. Performance monitor for antenna arrays
US6124824A (en) 1999-01-29 2000-09-26 Cwill Telecommunications, Inc. Adaptive antenna array system calibration
US6349219B1 (en) 1999-03-01 2002-02-19 Lucent Technologies Inc. Antenna array having reduced sensitivity to frequency-shift effects
JP3987229B2 (en) 1999-03-16 2007-10-03 テレフオンアクチーボラゲット エル エム エリクソン（パブル） Wireless communication system, base station thereof, and communication method thereof
US6169759B1 (en) 1999-03-22 2001-01-02 Golden Bridge Technology Common packet channel
US6177906B1 (en) 1999-04-01 2001-01-23 Arraycomm, Inc. Multimode iterative adaptive smart antenna processing method and apparatus
DE69932859T2 (en) 1999-05-01 2007-02-15 Nokia Corp. PROCEDURE FOR ADJUSTED RADIO COMMUNICATION
JP3662772B2 (en) * 1999-05-24 2005-06-22 東芝テック株式会社 Wireless communication system
JP3699295B2 (en) 1999-05-24 2005-09-28 東芝テック株式会社 Wireless communication system
US6141567A (en) 1999-06-07 2000-10-31 Arraycomm, Inc. Apparatus and method for beamforming in a changing-interference environment
US6570929B1 (en) 1999-07-08 2003-05-27 Telefonaktiebolaget Lm Ericsson (Publ) Power control scheme for maximizing carrier signal-to-noise ratio in multicarrier transmitters
FI111438B (en) 1999-07-09 2003-07-15 Nokia Corp Method of producing a symbol sequence
US6560299B1 (en) 1999-07-30 2003-05-06 Christopher H Strolle Diversity receiver with joint signal processing
US6453168B1 (en) 1999-08-02 2002-09-17 Itt Manufacturing Enterprises, Inc Method and apparatus for determining the position of a mobile communication device using low accuracy clocks
US7027536B1 (en) * 1999-10-08 2006-04-11 At&T Corp. Method and apparatus for designing finite-length multi-input multi-output channel shortening pre-filters
US6377636B1 (en) * 1999-11-02 2002-04-23 Iospan Wirless, Inc. Method and wireless communications system using coordinated transmission and training for interference mitigation
US6295026B1 (en) 1999-11-19 2001-09-25 Trw Inc. Enhanced direct radiating array
US6298092B1 (en) * 1999-12-15 2001-10-02 Iospan Wireless, Inc. Methods of controlling communication parameters of wireless systems
US6351499B1 (en) 1999-12-15 2002-02-26 Iospan Wireless, Inc. Method and wireless systems using multiple antennas and adaptive control for maximizing a communication parameter
US6453104B1 (en) * 1999-12-28 2002-09-17 Mitsubishi Rayon Co., Ltd. Optical fiber cable and optical fiber cable with plug
US6370182B2 (en) * 2000-02-10 2002-04-09 Itt Manufacturing Enterprises, Inc. Integrated beamforming/rake/mud CDMA receiver architecture
GB0029426D0 (en) * 2000-12-02 2001-01-17 Koninkl Philips Electronics Nv Radio communication system
GB0004121D0 (en) 2000-02-23 2000-04-12 Koninkl Philips Electronics Nv Communication system and a transmitter for use in the system
US20010033622A1 (en) * 2000-03-14 2001-10-25 Joengren George Robust utilization of feedback information in space-time coding
US7298715B2 (en) 2000-03-14 2007-11-20 Vyyo Ltd Communication receiver with signal processing for beam forming and antenna diversity
US6473467B1 (en) * 2000-03-22 2002-10-29 Qualcomm Incorporated Method and apparatus for measuring reporting channel state information in a high efficiency, high performance communications system
US6684064B2 (en) 2000-03-29 2004-01-27 Interdigital Technology Corp. Dynamic bias for RF power amplifiers
US7391804B2 (en) 2000-04-04 2008-06-24 Lot 41 Acquisition Foundation, Llc Spread spectrum communication method and system using diversity correlation and multi-user detection
US6377819B1 (en) * 2000-04-06 2002-04-23 Iospan Wireless, Inc. Wireless communication system using joined transmit and receive processing
ATE303677T1 (en) * 2000-05-05 2005-09-15 Celletra Ltd SYSTEM AND METHOD FOR POLARIZATION ADJUSTMENT OF A FORWARD CONNECTION IN CELLULAR COMMUNICATION
EP1152548A1 (en) 2000-05-05 2001-11-07 Lucent Technologies Inc. Increased data communication capacity of a high rate wireless network
DE60043291D1 (en) 2000-05-05 2009-12-24 Lucent Technologies Inc Overall estimation using the M or T algorithm in multiple antenna systems
US6442214B1 (en) 2000-05-19 2002-08-27 Iospan Wireless, Inc. Diversity transmitter based on linear transform processing of transmitted information
US7068628B2 (en) * 2000-05-22 2006-06-27 At&T Corp. MIMO OFDM system
US6396803B2 (en) 2000-06-29 2002-05-28 California Amplifier, Inc. Modulation methods and structures for wireless communication systems and transceivers
US6362781B1 (en) * 2000-06-30 2002-03-26 Motorola, Inc. Method and device for adaptive antenna combining weights
AU2001255253A1 (en) 2000-06-30 2002-01-14 Iospan Wireless, Inc. Method and system for mode adaptation in wireless communication
US7013165B2 (en) 2000-08-16 2006-03-14 Samsung Electronics Co., Ltd. Antenna array apparatus and beamforming method using GPS signal for base station in mobile telecommunication system
US6985434B2 (en) * 2000-09-01 2006-01-10 Nortel Networks Limited Adaptive time diversity and spatial diversity for OFDM
US6400699B1 (en) * 2000-09-12 2002-06-04 Iospan Wireless, Inc. Transmission scheduler for a multiple antenna wireless cellular network
US6922557B2 (en) * 2000-10-18 2005-07-26 Psion Teklogix Inc. Wireless communication system
US6895255B1 (en) * 2000-10-20 2005-05-17 Symbol Technologies, Inc. Dual mode wireless data communications
EP1202587B1 (en) * 2000-10-31 2004-12-15 Kabushiki Kaisha Toshiba Wireless communication system, weight control apparatus, and weight vector generation method
US6369758B1 (en) 2000-11-01 2002-04-09 Unique Broadband Systems, Inc. Adaptive antenna array for mobile communication
US7342875B2 (en) * 2000-11-06 2008-03-11 The Directv Group, Inc. Space-time coded OFDM system for MMDS applications
US6891810B2 (en) 2001-01-19 2005-05-10 Raze Technologies, Inc. Wireless access system and associated method using multiple modulation formats in TDD frames according to subscriber service type
US7230931B2 (en) 2001-01-19 2007-06-12 Raze Technologies, Inc. Wireless access system using selectively adaptable beam forming in TDD frames and method of operation
US6947507B2 (en) 2000-11-27 2005-09-20 Calamp Corp. Spatial-temporal methods and systems for reception of non-line-of-sight communication signals
GB0029424D0 (en) * 2000-12-02 2001-01-17 Koninkl Philips Electronics Nv Radio communication system
US20020111142A1 (en) * 2000-12-18 2002-08-15 Klimovitch Gleb V. System, apparatus, and method of estimating multiple-input multiple-output wireless channel with compensation for phase noise and frequency offset
US6980600B1 (en) 2000-12-26 2005-12-27 Nortel Networks Limited Receiver system for Multiple-Transmit, Multiple-Receive (MTMR) wireless communications systems
US6870515B2 (en) * 2000-12-28 2005-03-22 Nortel Networks Limited MIMO wireless communication system
US6987819B2 (en) * 2000-12-29 2006-01-17 Motorola, Inc. Method and device for multiple input/multiple output transmit and receive weights for equal-rate data streams
US6917820B2 (en) * 2001-01-26 2005-07-12 Stanford University Method and apparatus for selection and use of optimal antennas in wireless systems
GB0102316D0 (en) * 2001-01-30 2001-03-14 Koninkl Philips Electronics Nv Radio communication system
US6888878B2 (en) * 2001-03-12 2005-05-03 Motorola, Inc. Signal combining within a communication system
US7224758B1 (en) * 2001-03-23 2007-05-29 Via Telecom Co., Ltd. Multiple transmit antenna weighting techniques
US7340279B2 (en) * 2001-03-23 2008-03-04 Qualcomm Incorporated Wireless communications with an adaptive antenna array
US6496535B2 (en) * 2001-03-23 2002-12-17 Navini Networks, Inc. Method and system for effective channel estimation in a telecommunication system
US6901122B2 (en) * 2001-03-27 2005-05-31 Motorola Method and apparatus for restoring a soft decision component of a signal
US8290098B2 (en) 2001-03-30 2012-10-16 Texas Instruments Incorporated Closed loop multiple transmit, multiple receive antenna wireless communication system
US20020172186A1 (en) 2001-04-09 2002-11-21 Peter Larsson Instantaneous joint transmit power control and link adaptation for RTS/CTS based channel access
US6961545B2 (en) 2001-04-09 2005-11-01 Atheros Communications, Inc. Method and system for providing antenna diversity
US6611231B2 (en) 2001-04-27 2003-08-26 Vivato, Inc. Wireless packet switched communication systems and networks using adaptively steered antenna arrays
US7177369B2 (en) * 2001-04-27 2007-02-13 Vivato, Inc. Multipath communication methods and apparatuses
US6785341B2 (en) 2001-05-11 2004-08-31 Qualcomm Incorporated Method and apparatus for processing data in a multiple-input multiple-output (MIMO) communication system utilizing channel state information
US7027523B2 (en) 2001-06-22 2006-04-11 Qualcomm Incorporated Method and apparatus for transmitting data in a time division duplexed (TDD) communication system
US7224942B2 (en) * 2001-07-26 2007-05-29 Telefonaktiebolaget Lm Ericsson (Publ) Communications system employing non-polluting pilot codes
US20030022693A1 (en) * 2001-07-26 2003-01-30 Marios Gerogiokas System and method for beam on demand
EP1286506B1 (en) * 2001-08-07 2005-10-19 Kabushiki Kaisha Toshiba Wireless communication system and wireless station
US7046641B2 (en) * 2001-09-10 2006-05-16 The Boeing Company Packet-based downlink level control
US6956907B2 (en) * 2001-10-15 2005-10-18 Qualcomm, Incorporated Method and apparatus for determining power allocation in a MIMO communication system
US6646600B2 (en) 2001-11-09 2003-11-11 Harris Corporation Phased array antenna with controllable amplifier bias adjustment and related methods
US8018903B2 (en) 2001-11-21 2011-09-13 Texas Instruments Incorporated Closed-loop transmit diversity scheme in frequency selective multipath channels
US7050832B2 (en) 2001-11-28 2006-05-23 Arraycomm Llc Variable diversity transmission in a radio communications system based on characteristics of a received signal
WO2003047032A1 (en) 2001-11-29 2003-06-05 Interdigital Technology Corporation Efficient multiple input multiple output system for multi-path fading channels
US6760388B2 (en) 2001-12-07 2004-07-06 Qualcomm Incorporated Time-domain transmit and receive processing with channel eigen-mode decomposition for MIMO systems
ITMI20012685A1 (en) * 2001-12-19 2003-06-19 Cit Alcatel METHOD AND SYSTEM TO DOUBLE THE SPECTRAL EFFICIENCY INHUN RADIO TRANSMISSION SYSTEMS
US7277409B1 (en) 2002-02-07 2007-10-02 Broadcom Corporation Wireless local area network management
US7155231B2 (en) 2002-02-08 2006-12-26 Qualcomm, Incorporated Transmit pre-correction in a wireless communication system
US7076263B2 (en) * 2002-02-19 2006-07-11 Qualcomm, Incorporated Power control for partial channel-state information (CSI) multiple-input, multiple-output (MIMO) systems
US6862271B2 (en) * 2002-02-26 2005-03-01 Qualcomm Incorporated Multiple-input, multiple-output (MIMO) systems with multiple transmission modes
US6636568B2 (en) * 2002-03-01 2003-10-21 Qualcomm Data transmission with non-uniform distribution of data rates for a multiple-input multiple-output (MIMO) system
AU2003219882A1 (en) 2002-03-01 2003-09-16 Cognio, Inc. System and method for joint maximal ratio combining
US6862456B2 (en) * 2002-03-01 2005-03-01 Cognio, Inc. Systems and methods for improving range for multicast wireless communication
US6785520B2 (en) * 2002-03-01 2004-08-31 Cognio, Inc. System and method for antenna diversity using equal power joint maximal ratio combining
US6873651B2 (en) * 2002-03-01 2005-03-29 Cognio, Inc. System and method for joint maximal ratio combining using time-domain signal processing
US6687492B1 (en) 2002-03-01 2004-02-03 Cognio, Inc. System and method for antenna diversity using joint maximal ratio combining
US6904021B2 (en) * 2002-03-15 2005-06-07 Meshnetworks, Inc. System and method for providing adaptive control of transmit power and data rate in an ad-hoc communication network
US6728517B2 (en) * 2002-04-22 2004-04-27 Cognio, Inc. Multiple-input multiple-output radio transceiver
US6940917B2 (en) * 2002-08-27 2005-09-06 Qualcomm, Incorporated Beam-steering and beam-forming for wideband MIMO/MISO systems
US6873606B2 (en) * 2002-10-16 2005-03-29 Qualcomm, Incorporated Rate adaptive transmission scheme for MIMO systems
EA012005B1 (en) 2005-12-20 2009-06-30 Шарп Кабусики Кайся Transmitter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6463295B1 (en) * 1996-10-11 2002-10-08 Arraycomm, Inc. Power control with signal quality estimation for smart antenna communication systems
US6462709B1 (en) * 1998-12-22 2002-10-08 Sas Technologies Co., Ltd. Signal processing method and apparatus for computing an optimal weight vector of an adaptive antenna array system
US6141393A (en) * 1999-03-03 2000-10-31 Motorola, Inc. Method and device for channel estimation, equalization, and interference suppression
US6584161B2 (en) * 1999-05-19 2003-06-24 Nokia Corporation Transmit diversity method and system

Also Published As

Publication number Publication date
US7881674B2 (en) 2011-02-01
US20050215202A1 (en) 2005-09-29
EP2475093A2 (en) 2012-07-11
TWI233275B (en) 2005-05-21
WO2003075469A2 (en) 2003-09-12
AU2003213558A1 (en) 2003-09-16
EP1543627A4 (en) 2009-10-21
US20040072546A1 (en) 2004-04-15
USRE45425E1 (en) 2015-03-17
US6785520B2 (en) 2004-08-31
USRE47732E1 (en) 2019-11-19
EP2475093A3 (en) 2013-05-29
US7245881B2 (en) 2007-07-17
US20080014977A1 (en) 2008-01-17
AU2003213558A8 (en) 2003-09-16
TW200304287A (en) 2003-09-16
USRE46750E1 (en) 2018-03-06
EP1543627A2 (en) 2005-06-22

Similar Documents

Publication Publication Date Title
WO2003075469A3 (en) System and method for antenna diversity using equal power joint maximal ratio combining
WO2003075396A3 (en) System and method for antenna diversity using joint maximal ratio combining
WO2008134420A3 (en) Power amplifier adjustment for transmit beamforming in multi-antenna wireless systems
WO2008033089A3 (en) Method and arrangements for load balancing of power amplifiers
WO2004112262A3 (en) Compensation techniques for group delay effects in transmit beamforming
WO2009002078A3 (en) Method of transmitting of data and configuring a codebook in multi antenna system
WO2008033379A3 (en) Multi-rake receiver
WO2007117326A3 (en) Method and apparatus for reverse link transmit beam-forming
TW200629750A (en) Phase combining diversity
HK1074699A1 (en) Antenna system
MXPA05006683A (en) Transmission diversity systems.
WO2008073726A3 (en) Method for creating multiple-input-multiple-output channel with beamforming using signals transmitted from single transmit antenna
WO2004027920A3 (en) Antenna structures for reducing the effects of multipath radio signals
AU6075001A (en) Apparatus and method for transmission diversity using more than two antennas
TW200633413A (en) Method and system for diversity processing
CA2428804A1 (en) Tracking feed for multi-band operation
BR0211004A (en) Directive antenna, method and apparatus for forming frequency selective beam
WO2003019821A3 (en) Repeater with diversity transmission
WO2007117912A3 (en) Optimized beamforming for satellite communication
EP1328076A3 (en) Apparatus and method to implement a flexible hub-spoke satellite communications network
WO2007067284A3 (en) Method and system for creating beamformed channels in a multi-input multi-output network
WO2000077938A3 (en) Receiving station with interference signal suppression
TW200737791A (en) Power loading transmit beamforming in MIMO-OFDM wireless communication systems
WO2007127543A3 (en) High speed downlink packet access communication in a cellular communication system
CA2139047A1 (en) Combining Circuit for a Diversity Receiving System

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SD SE SG SK SL TJ TM TN TR TT TZ UA UG US UZ VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 2003711239

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 2003711239

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP