CA2090513A1 - Method and apparatus for providing antenna diversity - Google Patents
Method and apparatus for providing antenna diversityInfo
- Publication number
- CA2090513A1 CA2090513A1 CA2090513A CA2090513A CA2090513A1 CA 2090513 A1 CA2090513 A1 CA 2090513A1 CA 2090513 A CA2090513 A CA 2090513A CA 2090513 A CA2090513 A CA 2090513A CA 2090513 A1 CA2090513 A1 CA 2090513A1
- Authority
- CA
- Canada
- Prior art keywords
- symbols
- codeword
- sequence
- received
- antenna diversity
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Classifications
-
- 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
- H04B7/0602—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 antenna switching
- H04B7/0604—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 antenna switching with predefined switching scheme
-
- 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
Abstract
A method and apparatus providing antenna diversity is disclosed. A set of bits of a digital signal are used to generate a codeword of N symbols. Codewords are provided according to a channel code having a minimum Hamming distance, dmin, where 2~dm~N. N signals representing N symbols of a codeword are transmitted with N different antennas. The N transmitted signals are received and isolated. A sequence of N received symbols is formed from the isolated symbols and compared with one or more valid codewords to associate the sequence with a codeword. A set of bits based on a codeword associated with the received sequence is generated.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/860,830 US5479448A (en) | 1992-03-31 | 1992-03-31 | Method and apparatus for providing antenna diversity |
US860,830 | 1992-03-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2090513A1 true CA2090513A1 (en) | 1993-10-01 |
CA2090513C CA2090513C (en) | 1998-02-03 |
Family
ID=25334124
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002090513A Expired - Fee Related CA2090513C (en) | 1992-03-31 | 1993-02-26 | Method and apparatus for providing antenna diversity |
Country Status (6)
Country | Link |
---|---|
US (1) | US5479448A (en) |
EP (1) | EP0566257B1 (en) |
JP (1) | JP3096538B2 (en) |
CA (1) | CA2090513C (en) |
DE (1) | DE69322119T2 (en) |
ES (1) | ES2125302T3 (en) |
Families Citing this family (68)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2992670B2 (en) * | 1994-01-31 | 1999-12-20 | 松下電器産業株式会社 | Mobile communication device |
US5614914A (en) | 1994-09-06 | 1997-03-25 | Interdigital Technology Corporation | Wireless telephone distribution system with time and space diversity transmission for determining receiver location |
JP2746190B2 (en) * | 1995-04-27 | 1998-04-28 | 住友電気工業株式会社 | Spread spectrum communication equipment |
JPH08321785A (en) * | 1995-05-24 | 1996-12-03 | Sony Corp | Transmitter, receiver, transmission method, reception method and transmission method |
JP4034824B2 (en) * | 1996-04-26 | 2008-01-16 | エイ・ティ・アンド・ティ・コーポレーション | Method and apparatus for data transmission using multiple transmit antennas |
US6097771A (en) * | 1996-07-01 | 2000-08-01 | Lucent Technologies Inc. | Wireless communications system having a layered space-time architecture employing multi-element antennas |
US5910969A (en) * | 1996-11-05 | 1999-06-08 | Lucent Technologies Inc. | Method of detecting DC-free sequences |
FI108762B (en) * | 1996-12-10 | 2002-03-15 | Nokia Corp | Method for achieving diversity, and base station device |
US6173005B1 (en) * | 1997-09-04 | 2001-01-09 | Motorola, Inc. | Apparatus and method for transmitting signals in a communication system |
KR100374032B1 (en) * | 1997-09-11 | 2003-05-22 | 삼성전자주식회사 | Recording medium storing real time record/playback information, method and apparatus for recording and reproducing in real time, and file operating method using the same |
US6185258B1 (en) | 1997-09-16 | 2001-02-06 | At&T Wireless Services Inc. | Transmitter diversity technique for wireless communications |
EP2285011B8 (en) | 1997-10-31 | 2018-06-27 | AT&T Mobility II LLC | Maximum likelihood detection of concatenated space codes for wireless applications |
US6501803B1 (en) | 1998-10-05 | 2002-12-31 | At&T Wireless Services, Inc. | Low complexity maximum likelihood detecting of concatenated space codes for wireless applications |
US6088408A (en) | 1998-11-06 | 2000-07-11 | At & T Corp. | Decoding for generalized orthogonal designs for space-time codes for wireless communication |
US6795508B1 (en) * | 1997-12-02 | 2004-09-21 | Qualcomm, Incorporated | Method and apparatus for obtaining transmit diversity using switched antennas |
US6188736B1 (en) * | 1997-12-23 | 2001-02-13 | At&T Wireless Svcs. Inc. | Near-optimal low-complexity decoding of space-time codes for fixed wireless applications |
EP1060575B1 (en) | 1998-03-03 | 2007-05-09 | AT&T Corp. | Decoding of space-time coded signals for wireless communication |
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 |
US6198775B1 (en) * | 1998-04-28 | 2001-03-06 | Ericsson Inc. | Transmit diversity method, systems, and terminals using scramble coding |
FI981575A (en) * | 1998-07-08 | 2000-01-09 | Nokia Networks Oy | Method and arrangement for transmitting a digital signal |
US7079584B2 (en) * | 1998-08-10 | 2006-07-18 | Kamilo Feher | OFDM, CDMA, spread spectrum, TDMA, cross-correlated and filtered modulation |
US7415066B2 (en) | 1998-08-10 | 2008-08-19 | Kamilo Feher | Mis-matched modulation-demodulation format selectable filters |
US7593481B2 (en) | 1998-08-31 | 2009-09-22 | Kamilo Feher | CDMA, W-CDMA, 3rd generation interoperable modem format selectable (MFS) systems with GMSK modulated systems |
US7548787B2 (en) | 2005-08-03 | 2009-06-16 | Kamilo Feher | Medical diagnostic and communication system |
US8050345B1 (en) | 1999-08-09 | 2011-11-01 | Kamilo Feher | QAM and GMSK systems |
US6470055B1 (en) | 1998-08-10 | 2002-10-22 | Kamilo Feher | Spectrally efficient FQPSK, FGMSK, and FQAM for enhanced performance CDMA, TDMA, GSM, OFDN, and other systems |
US6757334B1 (en) * | 1998-08-10 | 2004-06-29 | Kamilo Feher | Bit rate agile third-generation wireless CDMA, GSM, TDMA and OFDM system |
US6366619B1 (en) | 1998-08-28 | 2002-04-02 | Sicom, Inc. | Constrained-envelope transmitter and method therefor |
US6104761A (en) | 1998-08-28 | 2000-08-15 | Sicom, Inc. | Constrained-envelope digital-communications transmission system and method therefor |
AU5796499A (en) | 1998-08-31 | 2000-03-21 | Kamilo Feher | Feher keying (fk) modulation and transceivers including clock shaping processors |
US6459740B1 (en) | 1998-09-17 | 2002-10-01 | At&T Wireless Services, Inc. | Maximum ratio transmission |
US6584593B1 (en) * | 1998-10-02 | 2003-06-24 | At&T Corp. | Concatenation of turbo-TCM with space-block coding |
US6128330A (en) | 1998-11-24 | 2000-10-03 | Linex Technology, Inc. | Efficient shadow reduction antenna system for spread spectrum |
US6247158B1 (en) * | 1998-11-30 | 2001-06-12 | Itt Manufacturing Enterprises, Inc. | Digital broadcasting system and method |
EP1073214B1 (en) * | 1999-02-16 | 2008-12-17 | Mitsubishi Denki Kabushiki Kaisha | Radio communication system, transmitter and receiver |
US9373251B2 (en) | 1999-08-09 | 2016-06-21 | Kamilo Feher | Base station devices and automobile wireless communication systems |
US9307407B1 (en) | 1999-08-09 | 2016-04-05 | Kamilo Feher | DNA and fingerprint authentication of mobile devices |
US7260369B2 (en) | 2005-08-03 | 2007-08-21 | Kamilo Feher | Location finder, tracker, communication and remote control system |
US9813270B2 (en) | 1999-08-09 | 2017-11-07 | Kamilo Feher | Heart rate sensor and medical diagnostics wireless devices |
US6700926B1 (en) | 1999-12-10 | 2004-03-02 | Nokia Corporation | Method and apparatus providing bit-to-symbol mapping for space-time codes |
US6693976B1 (en) * | 2000-03-21 | 2004-02-17 | Lucent Technologies Inc. | Method of wireless communication using structured unitary space-time signal constellations |
US6922447B1 (en) * | 2000-05-17 | 2005-07-26 | Nokia Corporation | Apparatus, and associated method, for forming a signal exhibiting space-time redundancy |
US6442214B1 (en) | 2000-05-19 | 2002-08-27 | Iospan Wireless, Inc. | Diversity transmitter based on linear transform processing of transmitted information |
WO2001091318A1 (en) * | 2000-05-25 | 2001-11-29 | Samsung Electronics Co., Ltd | Apparatus and method for transmission diversity using more than two antennas |
US7020175B2 (en) * | 2000-09-21 | 2006-03-28 | Motorola, Inc. | MMSE reception of DS-CDMA with transmit diversity |
US7236508B2 (en) * | 2001-02-05 | 2007-06-26 | The Directv Group, Inc. | Application of complex codes to maximize feeder link utilization |
JP2002261667A (en) * | 2001-02-28 | 2002-09-13 | Pioneer Electronic Corp | Receiving apparatus |
FI20010963A0 (en) * | 2001-05-08 | 2001-05-08 | Nokia Corp | Adaptive Symbol Description in a Mobile System |
US6999472B2 (en) * | 2001-05-30 | 2006-02-14 | Nokia Mobile Phones Limited | Apparatus, and associated method, for space-time encoding, and decoding, data at a selected code rate |
US20030069043A1 (en) * | 2001-10-10 | 2003-04-10 | Pallav Chhaochharia | Methods and devices for wirelessly transmitting data in dependence on location |
US7126956B2 (en) * | 2002-03-05 | 2006-10-24 | Applied Micro Circuits Corporation | System to provide fractional bandwidth data communications services |
EP1502439B1 (en) * | 2002-04-30 | 2007-06-20 | Koninklijke Philips Electronics N.V. | Backward compatible dvb-s standard transmission system |
JP2004175052A (en) * | 2002-11-29 | 2004-06-24 | Sony Corp | Medium to be recorded by ink jetting, ink jet imaging method, and printed matter |
US8064528B2 (en) | 2003-05-21 | 2011-11-22 | Regents Of The University Of Minnesota | Estimating frequency-offsets and multi-antenna channels in MIMO OFDM systems |
KR100584329B1 (en) * | 2003-09-09 | 2006-05-26 | 삼성전자주식회사 | Distortion compensation apparatus for asynchronous wcdma communication system when a frame reference signal is phase-slewed and method therefor |
WO2006023588A2 (en) * | 2004-08-16 | 2006-03-02 | Beceem Communications, Inc. | A method and system for rate-2 transmission |
US7586997B2 (en) * | 2004-08-16 | 2009-09-08 | Beceem Communications Inc. | Method and system for maximum transmit diversity |
US7477698B2 (en) * | 2004-08-16 | 2009-01-13 | Beceem Communications Inc. | Method and system for rate-2 transmission |
US7359449B2 (en) | 2004-10-05 | 2008-04-15 | Kamilo Feher | Data communication for wired and wireless communication |
US10009956B1 (en) | 2017-09-02 | 2018-06-26 | Kamilo Feher | OFDM, 3G and 4G cellular multimode systems and wireless mobile networks |
US7280810B2 (en) | 2005-08-03 | 2007-10-09 | Kamilo Feher | Multimode communication system |
US7283069B2 (en) * | 2006-03-16 | 2007-10-16 | Harris Corporation | Method for encoded or encrypted bit stream synchronization |
US8094751B2 (en) * | 2009-07-28 | 2012-01-10 | Ehsan Nekoui | System and method for encoding and decoding of space-time block codes in data communication |
EP2798787B1 (en) | 2011-12-28 | 2018-10-24 | Lutron Electronics Co., Inc. | Load control system having independently-controlled units responsive to a broadcast controller |
US9203519B2 (en) * | 2012-10-04 | 2015-12-01 | Nec Laboratories America, Inc. | Pair-wise symbol correlated high receiver sensitivity modulation format |
US11235443B2 (en) | 2013-03-26 | 2022-02-01 | Milwaukee Electric Tool Corporation | Pipe wrench |
CN112188946A (en) | 2018-03-30 | 2021-01-05 | 米沃奇电动工具公司 | Pipe wrench |
EP4192651A1 (en) | 2020-08-04 | 2023-06-14 | Milwaukee Electric Tool Corporation | Extendable wrench |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3267380A (en) * | 1962-10-19 | 1966-08-16 | Sichak Associates | Diversity phase control system using subcarrier identifying signals |
US3348150A (en) * | 1964-07-27 | 1967-10-17 | Bell Telephone Labor Inc | Diversity transmission system |
US3662268A (en) * | 1970-11-17 | 1972-05-09 | Bell Telephone Labor Inc | Diversity communication system using distinct spectral arrangements for each branch |
US3717814A (en) * | 1971-09-23 | 1973-02-20 | Bell Telephone Labor Inc | Cophasing diversity communication system with pilot feedback |
JPS5147313A (en) * | 1974-10-21 | 1976-04-22 | Nippon Telegraph & Telephone | |
DE2534888C2 (en) * | 1975-08-05 | 1983-12-08 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Antenna diversity process and arrangement for carrying out the process |
US4280222A (en) * | 1980-01-14 | 1981-07-21 | The Singer Company | Receiver and correlator switching method |
US4383332A (en) * | 1980-11-21 | 1983-05-10 | Bell Telephone Laboratories, Incorporated | High capacity digital mobile radio system |
JPS5815341A (en) * | 1981-07-22 | 1983-01-28 | Nec Corp | Transmission diversity system |
US4513412A (en) * | 1983-04-25 | 1985-04-23 | At&T Bell Laboratories | Time division adaptive retransmission technique for portable radio telephones |
DE3517247A1 (en) * | 1985-05-13 | 1986-11-13 | Gerhard Prof. Dr.-Ing. 8012 Ottobrunn Flachenecker | ANTENNA DIVERSITY RECEIVING SYSTEM FOR ELIMINATION OF RECEIVING ERRORS |
US4881241A (en) * | 1988-02-24 | 1989-11-14 | Centre National D'etudes Des Telecommunications | Method and installation for digital communication, particularly between and toward moving vehicles |
JPH0338932A (en) * | 1989-07-06 | 1991-02-20 | Oki Electric Ind Co Ltd | Space diversity system |
US5029185A (en) * | 1989-07-28 | 1991-07-02 | At&T Bell Laboratories | Coded modulation for mobile radio |
US5134633A (en) * | 1990-11-30 | 1992-07-28 | At&T Bell Laboratories | Digital communications synchronization scheme |
US5170413A (en) * | 1990-12-24 | 1992-12-08 | Motorola, Inc. | Control strategy for reuse system assignments and handoff |
US5305353A (en) * | 1992-05-29 | 1994-04-19 | At&T Bell Laboratories | Method and apparatus for providing time diversity |
-
1992
- 1992-03-31 US US07/860,830 patent/US5479448A/en not_active Expired - Lifetime
-
1993
- 1993-02-26 CA CA002090513A patent/CA2090513C/en not_active Expired - Fee Related
- 1993-03-25 DE DE69322119T patent/DE69322119T2/en not_active Expired - Lifetime
- 1993-03-25 ES ES93302273T patent/ES2125302T3/en not_active Expired - Lifetime
- 1993-03-25 EP EP93302273A patent/EP0566257B1/en not_active Expired - Lifetime
- 1993-03-30 JP JP05093909A patent/JP3096538B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0566257B1 (en) | 1998-11-18 |
JPH0621856A (en) | 1994-01-28 |
ES2125302T3 (en) | 1999-03-01 |
DE69322119T2 (en) | 1999-05-27 |
JP3096538B2 (en) | 2000-10-10 |
EP0566257A1 (en) | 1993-10-20 |
CA2090513C (en) | 1998-02-03 |
US5479448A (en) | 1995-12-26 |
DE69322119D1 (en) | 1998-12-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |