WO2000011823A1 - Technologie dmt a empilement de porteuses - Google Patents

Technologie dmt a empilement de porteuses Download PDF

Info

Publication number
WO2000011823A1
WO2000011823A1 PCT/US1998/017063 US9817063W WO0011823A1 WO 2000011823 A1 WO2000011823 A1 WO 2000011823A1 US 9817063 W US9817063 W US 9817063W WO 0011823 A1 WO0011823 A1 WO 0011823A1
Authority
WO
WIPO (PCT)
Prior art keywords
stacked
carrier signals
spreading
frequency
received
Prior art date
Application number
PCT/US1998/017063
Other languages
English (en)
Inventor
Brian G. Agee
Original Assignee
Beamreach Networks, Inc.
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
Priority to EP98940958A priority Critical patent/EP1119932A4/fr
Priority to IL14146498A priority patent/IL141464A0/xx
Priority to BR9816015-0A priority patent/BR9816015A/pt
Priority to MXPA01001753A priority patent/MXPA01001753A/es
Priority to CA002340716A priority patent/CA2340716A1/fr
Priority to JP2000566980A priority patent/JP2002523969A/ja
Application filed by Beamreach Networks, Inc. filed Critical Beamreach Networks, Inc.
Priority to KR1020017002048A priority patent/KR20010106445A/ko
Priority to PCT/US1998/017063 priority patent/WO2000011823A1/fr
Priority to CNB988142422A priority patent/CN1237746C/zh
Priority to AU89117/98A priority patent/AU8911798A/en
Publication of WO2000011823A1 publication Critical patent/WO2000011823A1/fr
Priority to IL141464A priority patent/IL141464A/en

Links

Classifications

    • 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
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/7103—Interference-related aspects the interference being multiple access interference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • 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
    • H04B1/69—Spread spectrum techniques
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/10—Code generation
    • 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
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/023—Multiplexing of multicarrier modulation signals
    • H04L5/026—Multiplexing of multicarrier modulation signals using code division
    • 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

Definitions

  • An advantage of the invention is that a radio communication method is provided that communicates even under strong narrow-band interference. So a stacked-carrier spread spectrum (SCSS) link can be maintained in the presence of strong narrow-band frequency- division multiple access (FDMA) and time-division multiple access (TDMA) cellular radio signals, as in cellular overlay applications. It also allows such a link to be maintained in the presence of spurious interference due to harmonics from out-of-band signals.
  • SCSS stacked-carrier spread spectrum
  • An advantage of the invention is that a radio communication method is provided that can be used with adaptive antenna arrays.
  • Fig. 3B is a block diagram representing another embodiment of the invention wherein a stacked-carrier multiple-access transmitter is connected to a time-division duplexer for a network transmitter, and another time-division duplexer is connected to a stacked-carrier multiple-access receiver for a network receiver;
  • Fig. 16 is a dataflow diagram representing a code-gated SCORE spreading operation with gating over two cell subsets, and demonstrates a symmetry with that of Fig. 15;
  • Fig. 17 is a time-frequency format for a time-division duplex communication system embodiment of the invention;
  • Fig. 28 is a dataflow diagram representing a cross-SCORE niequation with K part subsets
  • Fig. 29 is a dataflow diagram representing a cross-SCORE niequation with two cell subsets
  • Fig. 30 is a dataflow diagram representing a multi-link code-gated cross-SCORE spreader embodiment of the invention
  • Fig. 35 is a dataflow diagram representing a single-link code-gated auto-SCORE despreading with gating over time and a rate one-half of redundancy gate.
  • This invention can further be represented in various ways, e.g., by the several combinatorial embodiments illustrated in Figs. 2A-6B.
  • Figs. 2A-6B Each of the major elements introduced in Figs. 2A-6B are described in further detail in connection with Figs. 7-16.
  • the antennas in each array can have arbitrary spatial placement, e.g., the array does not require a special antenna geometry in order to function correctly.
  • the antennas can be displaced in polarization as well as space.
  • Fig, 2B shows a network transmitter 42 comprising a stacked-carrier multiple-access (SCMA) transmitter bank 44 connected to a multi-element antenna array (AA) 46.
  • a network receiver bank 48 comprises a multi-element antenna array (AA) 50 connected to a stacked- carrier multiple-access (SCMA) receiver bank 52.
  • a symbol encoding at the baseband tones is included in the baseline system 300.
  • Each K ceH data bit modulates a separate tone in the signal baseband, such that a tone is phase modulated by O or 180° if the data bit modulating that tone is equal to zero or one, respectively.
  • tone modulation is highly efficient in terms of allowable transmit power. It offers a vulnerability to radiometric detection techniques, and it allows reliable demodulation of the transmitted bit sequences at E,/N 0 of as low as three dB.
  • the BPSK format allows for the use of powerful and sophisticated methods to remove timing and carrier offsets from the despread signal, when based on the conjugate self-coherence of the tone phase sequence.
  • the retrodirective mode embodied in Figs. 6A and 6B as retro-adapters 136 and 148, is useful in applications where interceptors are placed in the same location with the interference sources, e.g., in order to assess the effectiveness of the jamming strategy. This strategy is most useful in underloaded environments where broadband nulls can be directed at the interference sources.
  • Point-to-point as well as point-to-multipoint communication links, have increased user capacity, range, power and/or cost efficiencies that exceed those for full channel preemphasis methods.

Abstract

L'invention concerne un système de télécommunications à spectre étalé à empilement de porteuses (10), basé sur un étalement de domaine fréquentiel multipliant une représentation à domaine temporel d'un signal dans la bande de base par un ensemble de porteuses sinusoïdales complexes superposées ou empilées. Dans une forme d'exécution préférée (10), l'étalement excite les séries d'une transformation de Fourrier rapide (FFT). Ceci réduit considérablement la complexité informatique pour des grandeurs FFT de sortie modérées. Des topologies de réseaux point-multipoint et multipoint-multipoint (sans noeuds) sont possibles. Une méthode d'annulation de code est comprise pour la suppression d'interférence et l'accroissement de la séparation de signaux en exploitant la diversité spectrale des diverses sources (11). Le système de base (10) peut s'étendre de manière à inclure des méthodes d'annulation à réseaux d'antennes multi-éléments (26/18), également pour la suppression d'interférence et l'accroissement de la séparation de signaux, au moyen d'une séparation dans l'espace. De telles méthodes permettent que des systèmes directifs et rétro-directifs soient adaptés, ou puissent être adaptés, à un environnement radio. De tels systèmes sont compatibles avec des formats de modulation à largeur de bande sur demande et d'ordre supérieur et utilisent des algorithmes d'adaptation à désétaleur évolués (SINR maximum).
PCT/US1998/017063 1998-08-18 1998-08-18 Technologie dmt a empilement de porteuses WO2000011823A1 (fr)

Priority Applications (11)

Application Number Priority Date Filing Date Title
IL14146498A IL141464A0 (en) 1998-08-18 1998-08-18 Stacked-carrier discrete multiple tone communication technology
BR9816015-0A BR9816015A (pt) 1998-08-18 1998-08-18 Tecnologia de comunicação de portadora acumulada de tons múltiplos discretos
MXPA01001753A MXPA01001753A (es) 1998-08-18 1998-08-18 Tecnologia de comunicacion multitono de separacion de portadora apilada.
CA002340716A CA2340716A1 (fr) 1998-08-18 1998-08-18 Technologie dmt a empilement de porteuses
JP2000566980A JP2002523969A (ja) 1998-08-18 1998-08-18 スタックキャリアディスクリートマルチトーン通信技術
EP98940958A EP1119932A4 (fr) 1998-08-18 1998-08-18 Technologie dmt a empilement de porteuses
KR1020017002048A KR20010106445A (ko) 1998-08-18 1998-08-18 스택 캐리어 이산 다중 톤 통신기술
PCT/US1998/017063 WO2000011823A1 (fr) 1998-08-18 1998-08-18 Technologie dmt a empilement de porteuses
CNB988142422A CN1237746C (zh) 1998-08-18 1998-08-18 多层载波离散多音通信技术
AU89117/98A AU8911798A (en) 1998-08-18 1998-08-18 Stacked-carrier discrete multiple tone communication technology
IL141464A IL141464A (en) 1998-08-18 2001-02-15 Discrete multi-tone communication technologies with a hamster carrier and combinations with code reset, interruption cancellation, repeat guiding communication and an adjustable array of antennas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1998/017063 WO2000011823A1 (fr) 1998-08-18 1998-08-18 Technologie dmt a empilement de porteuses

Publications (1)

Publication Number Publication Date
WO2000011823A1 true WO2000011823A1 (fr) 2000-03-02

Family

ID=22267690

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/017063 WO2000011823A1 (fr) 1998-08-18 1998-08-18 Technologie dmt a empilement de porteuses

Country Status (10)

Country Link
EP (1) EP1119932A4 (fr)
JP (1) JP2002523969A (fr)
KR (1) KR20010106445A (fr)
CN (1) CN1237746C (fr)
AU (1) AU8911798A (fr)
BR (1) BR9816015A (fr)
CA (1) CA2340716A1 (fr)
IL (2) IL141464A0 (fr)
MX (1) MXPA01001753A (fr)
WO (1) WO2000011823A1 (fr)

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005067161A1 (fr) * 2003-12-31 2005-07-21 Ut-Battelle, Llc Systeme radio a spectre etale hybride
JP2006503446A (ja) * 2001-12-03 2006-01-26 クゥアルコム・インコーポレイテッド Ｍｉｍｏ−ｏｆｄｍシステムに関する反復検出及びデコーディング
JP2006504336A (ja) * 2002-10-25 2006-02-02 クゥアルコム・インコーポレイテッド 時分割複信通信システムのためのチャネル校正
US7092440B1 (en) 2000-09-27 2006-08-15 Ut-Battelle Llc Hybrid spread-spectrum technique for expanding channel capacity
US7315563B2 (en) 2003-12-03 2008-01-01 Ut-Battelle Llc Multicarrier orthogonal spread-spectrum (MOSS) data communications
US7340001B2 (en) 2003-12-03 2008-03-04 Ut-Battelle Llc Multidimensional signal modulation and/or demodulation for data communications
US7629927B2 (en) 2004-03-01 2009-12-08 Fujitsu Limited Method for forming a beam of an array antenna and apparatus therefor
US7986742B2 (en) 2002-10-25 2011-07-26 Qualcomm Incorporated Pilots for MIMO communication system
US8145179B2 (en) 2002-10-25 2012-03-27 Qualcomm Incorporated Data detection and demodulation for wireless communication systems
US8169944B2 (en) 2002-10-25 2012-05-01 Qualcomm Incorporated Random access for wireless multiple-access communication systems
EP2267927A3 (fr) * 2002-10-25 2012-05-16 Qualcomm Incorporated Terminal multi-mode dans un système mimo sans fil
EP2267926A3 (fr) * 2002-10-25 2012-05-23 Qualcomm Incorporated Système mimo prenant en charge plusieurs modes de multiplexage spatial
US8194770B2 (en) 2002-08-27 2012-06-05 Qualcomm Incorporated Coded MIMO systems with selective channel inversion applied per eigenmode
US8218609B2 (en) 2002-10-25 2012-07-10 Qualcomm Incorporated Closed-loop rate control for a multi-channel communication system
US8315326B2 (en) 2000-06-13 2012-11-20 Aloft Media, Llc Apparatus for generating at least one signal based on at least one aspect of at least two received signals
US8320301B2 (en) 2002-10-25 2012-11-27 Qualcomm Incorporated MIMO WLAN system
US8358714B2 (en) 2005-06-16 2013-01-22 Qualcomm Incorporated Coding and modulation for multiple data streams in a communication system
US8570988B2 (en) 2002-10-25 2013-10-29 Qualcomm Incorporated Channel calibration for a time division duplexed communication system
US8611443B2 (en) 2008-01-25 2013-12-17 Nxp, B.V. Method and apparatus to cancel additive sinusoidal disturbances in OFDM receivers
US8855226B2 (en) 2005-05-12 2014-10-07 Qualcomm Incorporated Rate selection with margin sharing
US8873365B2 (en) 2002-10-25 2014-10-28 Qualcomm Incorporated Transmit diversity processing for a multi-antenna communication system
US9154274B2 (en) 2002-10-25 2015-10-06 Qualcomm Incorporated OFDM communication system with multiple OFDM symbol sizes
WO2016043830A1 (fr) * 2014-09-18 2016-03-24 Raytheon Company Système de formation de faisceau programmable comprenant un dispositif de découpage en canaux analogique de niveau élément
US9473269B2 (en) 2003-12-01 2016-10-18 Qualcomm Incorporated Method and apparatus for providing an efficient control channel structure in a wireless communication system
US9485125B2 (en) 2014-06-16 2016-11-01 Raytheon Company Dynamically reconfigurable channelizer
US9588213B2 (en) 2014-02-18 2017-03-07 Raytheon Company Analog signal processing method for accurate single antenna direction finding
US9590760B2 (en) 2014-06-03 2017-03-07 Raytheon Company Analog RF memory system
US9645972B2 (en) 2014-06-16 2017-05-09 Raytheon Company Butterfly channelizer
US10084587B1 (en) 2017-07-28 2018-09-25 Raytheon Company Multifunction channelizer/DDC architecture for a digital receiver/exciter
US10348338B2 (en) 2016-10-06 2019-07-09 Raytheon Company Adaptive channelizer
CN112532333A (zh) * 2020-12-07 2021-03-19 京信通信系统（中国）有限公司 信号同步方法、装置、光线分布系统和存储介质

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2002315723A1 (en) * 2002-05-31 2003-12-19 Linkair Communications, Inc. A radio transmission method utilizing mimo
TWI335735B (en) * 2002-07-19 2011-01-01 Interdigital Tech Corp Groupwise successive interference cancellation for block transmission with reception diversity
EP1838004A1 (fr) * 2006-03-21 2007-09-26 Nokia Siemens Networks Gmbh & Co. Kg Procédé, système et station radio pour la suppression d'interférences
US9275690B2 (en) 2012-05-30 2016-03-01 Tahoe Rf Semiconductor, Inc. Power management in an electronic system through reducing energy usage of a battery and/or controlling an output power of an amplifier thereof
US9509351B2 (en) 2012-07-27 2016-11-29 Tahoe Rf Semiconductor, Inc. Simultaneous accommodation of a low power signal and an interfering signal in a radio frequency (RF) receiver
WO2014119944A1 (fr) * 2013-01-31 2014-08-07 엘지전자 주식회사 Procédé et appareil permettant de transmettre un accusé de réception dans un système de communication sans fil
US9666942B2 (en) 2013-03-15 2017-05-30 Gigpeak, Inc. Adaptive transmit array for beam-steering
US9722310B2 (en) 2013-03-15 2017-08-01 Gigpeak, Inc. Extending beamforming capability of a coupled voltage controlled oscillator (VCO) array during local oscillator (LO) signal generation through frequency multiplication
US9531070B2 (en) 2013-03-15 2016-12-27 Christopher T. Schiller Extending beamforming capability of a coupled voltage controlled oscillator (VCO) array during local oscillator (LO) signal generation through accommodating differential coupling between VCOs thereof
US9716315B2 (en) 2013-03-15 2017-07-25 Gigpeak, Inc. Automatic high-resolution adaptive beam-steering
US9184498B2 (en) 2013-03-15 2015-11-10 Gigoptix, Inc. Extending beamforming capability of a coupled voltage controlled oscillator (VCO) array during local oscillator (LO) signal generation through fine control of a tunable frequency of a tank circuit of a VCO thereof
US9837714B2 (en) 2013-03-15 2017-12-05 Integrated Device Technology, Inc. Extending beamforming capability of a coupled voltage controlled oscillator (VCO) array during local oscillator (LO) signal generation through a circular configuration thereof
US9780449B2 (en) 2013-03-15 2017-10-03 Integrated Device Technology, Inc. Phase shift based improved reference input frequency signal injection into a coupled voltage controlled oscillator (VCO) array during local oscillator (LO) signal generation to reduce a phase-steering requirement during beamforming
WO2016202372A1 (fr) * 2015-06-17 2016-12-22 Nokia Solutions And Networks Oy Bandes de fréquences adjacentes
CN107395267A (zh) * 2017-08-28 2017-11-24 王洋 一种ais多天线多通道信号模拟器
CN111769847B (zh) * 2019-03-12 2021-10-29 大唐移动通信设备有限公司 一种无线电波收发方法及系统

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5584057A (en) * 1993-04-29 1996-12-10 Ericsson Inc. Use of diversity transmission to relax adjacent channel requirements in mobile telephone systems
US5592471A (en) * 1995-04-21 1997-01-07 Cd Radio Inc. Mobile radio receivers using time diversity to avoid service outages in multichannel broadcast transmission systems

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5467367A (en) * 1991-06-07 1995-11-14 Canon Kabushiki Kaisha Spread spectrum communication apparatus and telephone exchange system
JP2000509214A (ja) * 1996-03-27 2000-07-18 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング ポイント―ツーマルチポイント無線伝送系
WO1998035458A1 (fr) * 1997-02-06 1998-08-13 At & T Wireless Services, Inc. Procede de synchronisation d'une station a distance avec une station de base dans un systeme de telecommunications par etalement du spectre a tonalites discretes multiples

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5584057A (en) * 1993-04-29 1996-12-10 Ericsson Inc. Use of diversity transmission to relax adjacent channel requirements in mobile telephone systems
US5592471A (en) * 1995-04-21 1997-01-07 Cd Radio Inc. Mobile radio receivers using time diversity to avoid service outages in multichannel broadcast transmission systems

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1119932A4 *

Cited By (78)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9391745B2 (en) 2000-06-13 2016-07-12 Comcast Cable Communications, Llc Multi-user transmissions
US8451928B2 (en) 2000-06-13 2013-05-28 Aloft Media, Llc Apparatus for calculating weights associated with a first signal and applying the weights to a second signal
US9356666B1 (en) 2000-06-13 2016-05-31 Comcast Cable Communications, Llc Originator and recipient based transmissions in wireless communications
US8315327B2 (en) 2000-06-13 2012-11-20 Aloft Media, Llc Apparatus for transmitting a signal including transmit data to a multiple-input capable node
US10257765B2 (en) 2000-06-13 2019-04-09 Comcast Cable Communications, Llc Transmission of OFDM symbols
US9820209B1 (en) 2000-06-13 2017-11-14 Comcast Cable Communications, Llc Data routing for OFDM transmissions
US9722842B2 (en) 2000-06-13 2017-08-01 Comcast Cable Communications, Llc Transmission of data using a plurality of radio frequency channels
US9654323B2 (en) 2000-06-13 2017-05-16 Comcast Cable Communications, Llc Data routing for OFDM transmission based on observed node capacities
US9515788B2 (en) 2000-06-13 2016-12-06 Comcast Cable Communications, Llc Originator and recipient based transmissions in wireless communications
US9344233B2 (en) 2000-06-13 2016-05-17 Comcast Cable Communications, Llc Originator and recipient based transmissions in wireless communications
US10349332B2 (en) 2000-06-13 2019-07-09 Comcast Cable Communications, Llc Network communication using selected resources
US8315326B2 (en) 2000-06-13 2012-11-20 Aloft Media, Llc Apparatus for generating at least one signal based on at least one aspect of at least two received signals
US9401783B1 (en) 2000-06-13 2016-07-26 Comcast Cable Communications, Llc Transmission of data to multiple nodes
US9209871B2 (en) 2000-06-13 2015-12-08 Comcast Cable Communications, Llc Network communication using diversity
US9197297B2 (en) 2000-06-13 2015-11-24 Comcast Cable Communications, Llc Network communication using diversity
USRE45807E1 (en) 2000-06-13 2015-11-17 Comcast Cable Communications, Llc Apparatus for transmitting a signal including transmit data to a multiple-input capable node
US8451929B2 (en) 2000-06-13 2013-05-28 Aloft Media, Llc Apparatus for calculating weights associated with a received signal and applying the weights to transmit data
USRE45775E1 (en) 2000-06-13 2015-10-20 Comcast Cable Communications, Llc Method and system for robust, secure, and high-efficiency voice and packet transmission over ad-hoc, mesh, and MIMO communication networks
US9106286B2 (en) 2000-06-13 2015-08-11 Comcast Cable Communications, Llc Network communication using diversity
US7092440B1 (en) 2000-09-27 2006-08-15 Ut-Battelle Llc Hybrid spread-spectrum technique for expanding channel capacity
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
JP2006503446A (ja) * 2001-12-03 2006-01-26 クゥアルコム・インコーポレイテッド Ｍｉｍｏ−ｏｆｄｍシステムに関する反復検出及びデコーディング
US8194770B2 (en) 2002-08-27 2012-06-05 Qualcomm Incorporated Coded MIMO systems with selective channel inversion applied per eigenmode
US9013974B2 (en) 2002-10-25 2015-04-21 Qualcomm Incorporated MIMO WLAN system
US8170513B2 (en) 2002-10-25 2012-05-01 Qualcomm Incorporated Data detection and demodulation for wireless communication systems
US8355313B2 (en) 2002-10-25 2013-01-15 Qualcomm Incorporated MIMO system with multiple spatial multiplexing modes
US8320301B2 (en) 2002-10-25 2012-11-27 Qualcomm Incorporated MIMO WLAN system
US8218609B2 (en) 2002-10-25 2012-07-10 Qualcomm Incorporated Closed-loop rate control for a multi-channel communication system
US8462643B2 (en) 2002-10-25 2013-06-11 Qualcomm Incorporated MIMO WLAN system
US8483188B2 (en) 2002-10-25 2013-07-09 Qualcomm Incorporated MIMO system with multiple spatial multiplexing modes
US8570988B2 (en) 2002-10-25 2013-10-29 Qualcomm Incorporated Channel calibration for a time division duplexed communication system
US10382106B2 (en) 2002-10-25 2019-08-13 Qualcomm Incorporated Pilots for MIMO communication systems
US8711763B2 (en) 2002-10-25 2014-04-29 Qualcomm Incorporated Random access for wireless multiple-access communication systems
US8750151B2 (en) 2002-10-25 2014-06-10 Qualcomm Incorporated Channel calibration for a time division duplexed communication system
JP2006504336A (ja) * 2002-10-25 2006-02-02 クゥアルコム・インコーポレイテッド 時分割複信通信システムのためのチャネル校正
US8873365B2 (en) 2002-10-25 2014-10-28 Qualcomm Incorporated Transmit diversity processing for a multi-antenna communication system
US8913529B2 (en) 2002-10-25 2014-12-16 Qualcomm Incorporated MIMO WLAN system
US8934329B2 (en) 2002-10-25 2015-01-13 Qualcomm Incorporated Transmit diversity processing for a multi-antenna communication system
US9967005B2 (en) 2002-10-25 2018-05-08 Qualcomm Incorporated Pilots for MIMO communication systems
US9031097B2 (en) 2002-10-25 2015-05-12 Qualcomm Incorporated MIMO system with multiple spatial multiplexing modes
US9048892B2 (en) 2002-10-25 2015-06-02 Qualcomm Incorporated MIMO system with multiple spatial multiplexing modes
US8208364B2 (en) 2002-10-25 2012-06-26 Qualcomm Incorporated MIMO system with multiple spatial multiplexing modes
US9154274B2 (en) 2002-10-25 2015-10-06 Qualcomm Incorporated OFDM communication system with multiple OFDM symbol sizes
US8203978B2 (en) 2002-10-25 2012-06-19 Qualcomm Incorporated Multi-mode terminal in a wireless MIMO system
EP2267926A3 (fr) * 2002-10-25 2012-05-23 Qualcomm Incorporated Système mimo prenant en charge plusieurs modes de multiplexage spatial
EP2267927A3 (fr) * 2002-10-25 2012-05-16 Qualcomm Incorporated Terminal multi-mode dans un système mimo sans fil
US8169944B2 (en) 2002-10-25 2012-05-01 Qualcomm Incorporated Random access for wireless multiple-access communication systems
US9240871B2 (en) 2002-10-25 2016-01-19 Qualcomm Incorporated MIMO WLAN system
US7986742B2 (en) 2002-10-25 2011-07-26 Qualcomm Incorporated Pilots for MIMO communication system
US9312935B2 (en) 2002-10-25 2016-04-12 Qualcomm Incorporated Pilots for MIMO communication systems
US8134976B2 (en) 2002-10-25 2012-03-13 Qualcomm Incorporated Channel calibration for a time division duplexed communication system
US8145179B2 (en) 2002-10-25 2012-03-27 Qualcomm Incorporated Data detection and demodulation for wireless communication systems
US9876609B2 (en) 2003-12-01 2018-01-23 Qualcomm Incorporated Method and apparatus for providing an efficient control channel structure in a wireless communication system
US10742358B2 (en) 2003-12-01 2020-08-11 Qualcomm Incorporated Method and apparatus for providing an efficient control channel structure in a wireless communication system
US9473269B2 (en) 2003-12-01 2016-10-18 Qualcomm Incorporated Method and apparatus for providing an efficient control channel structure in a wireless communication system
US7315563B2 (en) 2003-12-03 2008-01-01 Ut-Battelle Llc Multicarrier orthogonal spread-spectrum (MOSS) data communications
US7340001B2 (en) 2003-12-03 2008-03-04 Ut-Battelle Llc Multidimensional signal modulation and/or demodulation for data communications
US7660338B2 (en) 2003-12-31 2010-02-09 Ut-Battelle, Llc Hybrid spread spectrum radio system
WO2005067161A1 (fr) * 2003-12-31 2005-07-21 Ut-Battelle, Llc Systeme radio a spectre etale hybride
US7656931B2 (en) 2003-12-31 2010-02-02 Ut-Battelle, Llc Hybrid spread spectrum radio system
US7629927B2 (en) 2004-03-01 2009-12-08 Fujitsu Limited Method for forming a beam of an array antenna and apparatus therefor
US8855226B2 (en) 2005-05-12 2014-10-07 Qualcomm Incorporated Rate selection with margin sharing
US8358714B2 (en) 2005-06-16 2013-01-22 Qualcomm Incorporated Coding and modulation for multiple data streams in a communication system
US8611443B2 (en) 2008-01-25 2013-12-17 Nxp, B.V. Method and apparatus to cancel additive sinusoidal disturbances in OFDM receivers
US9588213B2 (en) 2014-02-18 2017-03-07 Raytheon Company Analog signal processing method for accurate single antenna direction finding
US9590760B2 (en) 2014-06-03 2017-03-07 Raytheon Company Analog RF memory system
US9485125B2 (en) 2014-06-16 2016-11-01 Raytheon Company Dynamically reconfigurable channelizer
US9645972B2 (en) 2014-06-16 2017-05-09 Raytheon Company Butterfly channelizer
US10027026B2 (en) 2014-09-18 2018-07-17 Raytheon Company Programmable beamforming system including element-level analog channelizer
WO2016043830A1 (fr) * 2014-09-18 2016-03-24 Raytheon Company Système de formation de faisceau programmable comprenant un dispositif de découpage en canaux analogique de niveau élément
US10965023B2 (en) 2014-09-18 2021-03-30 Raytheon Company Programmable beamforming system including element-level analog channelizer
US11664590B2 (en) 2014-09-18 2023-05-30 Raytheon Company Programmable beamforming system including element-level analog channelizer
US10348338B2 (en) 2016-10-06 2019-07-09 Raytheon Company Adaptive channelizer
US10840950B2 (en) 2016-10-06 2020-11-17 Raytheon Company Adaptive channelizer
US10084587B1 (en) 2017-07-28 2018-09-25 Raytheon Company Multifunction channelizer/DDC architecture for a digital receiver/exciter
US10491359B2 (en) 2017-07-28 2019-11-26 Raytheon Company Multifunction channelizer/DDC architecture for a digital receiver/exciter
CN112532333A (zh) * 2020-12-07 2021-03-19 京信通信系统（中国）有限公司 信号同步方法、装置、光线分布系统和存储介质
CN112532333B (zh) * 2020-12-07 2022-12-30 京信网络系统股份有限公司 信号同步方法、装置、光线分布系统和存储介质

Also Published As

Publication number Publication date
IL141464A0 (en) 2002-03-10
EP1119932A4 (fr) 2002-10-09
JP2002523969A (ja) 2002-07-30
CA2340716A1 (fr) 2000-03-02
AU8911798A (en) 2000-03-14
BR9816015A (pt) 2001-05-08
KR20010106445A (ko) 2001-11-29
MXPA01001753A (es) 2002-06-04
EP1119932A1 (fr) 2001-08-01
IL141464A (en) 2007-05-15
CN1310894A (zh) 2001-08-29
CN1237746C (zh) 2006-01-18

Similar Documents

Publication Publication Date Title
US6128276A (en) Stacked-carrier discrete multiple tone communication technology and combinations with code nulling, interference cancellation, retrodirective communication and adaptive antenna arrays
EP1119932A1 (fr) Technologie dmt a empilement de porteuses
US6359923B1 (en) Highly bandwidth efficient communications
US7656936B2 (en) Method and system for interference reduction in a wireless communication network using a joint detector
US6826240B1 (en) Method and device for multi-user channel estimation
US6600776B1 (en) Vertical adaptive antenna array for a discrete multitone spread spectrum communications system
US7760814B2 (en) Indoor radio transmission method for parallel radio transmission of digital data substreams and a mobile radio transmission system
US6584144B2 (en) Vertical adaptive antenna array for a discrete multitone spread spectrum communications system
US5289499A (en) Diversity for direct-sequence spread spectrum systems
US6504506B1 (en) Method and device for fixed in time adaptive antenna combining weights
EP1396956A1 (fr) Procédé de formation de faisceau pour une transmission MC-CDMA à liaison descendante, les pondérations des antennes étant différentes pour chaque utilisateur et pour chaque fréquence, et adaptées pour maximiser le rapport signal à l'interférence plus bruit
US20050276348A1 (en) Method and apparatus for multi-user transmission
AU2016340834A1 (en) Method and apparatus for communicating data in a digital chaos cooperative network
US20060058061A1 (en) Transmitting apparatus receiving apparatus radio communication method and radio communication system
EP1069707A1 (fr) Emetteur et récepteur de diversité d'émision pour des systèmes de communications par radio
EP0966797B1 (fr) Communications a largeur de bande hautement efficace
WO2002031990A2 (fr) Reduction des interferences dans des systemes de communications sans fil par reconnaissance de signaux parasites
Sun et al. Joint pre-equalization and adaptive combining for CC-CDMA systems over asynchronous frequency-selective fading channels
Kaiser Space frequency block coding in the uplink of broadband MC-CDMA mobile radio systems with pre-equalization
Caus et al. Cooperative Dual Leo Satellite Transmission in Multi-User OTFS Systems
CN102983893B (zh) 多层载波离散多音通信系统和方法
da Silva et al. Interference Cancellation with combined Pre-distortion filtering and Transmit Diversity
CA2310175A1 (fr) Attribution de code dans un systeme amrc sans fil
Casella et al. Differential semi-blind beamspace-time interference cancellation for DS-WCDMA systems in frequency selective time-varying channels
Peh Cyclic Prefix-Free MC-CDMA Arrayed MIMO Communication Systems

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 98814242.2

Country of ref document: CN

AK Designated states

Kind code of ref document: A1

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

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW SD SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN 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)
ENP Entry into the national phase

Ref document number: 2340716

Country of ref document: CA

Ref document number: 2340716

Country of ref document: CA

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 141464

Country of ref document: IL

WWE Wipo information: entry into national phase

Ref document number: 1020017002048

Country of ref document: KR

Ref document number: PA/a/2001/001753

Country of ref document: MX

WWE Wipo information: entry into national phase

Ref document number: 1998940958

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWP Wipo information: published in national office

Ref document number: 1998940958

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1020017002048

Country of ref document: KR

WWW Wipo information: withdrawn in national office

Ref document number: 1998940958

Country of ref document: EP

WWR Wipo information: refused in national office

Ref document number: 1020017002048

Country of ref document: KR