CA2273295A1 - Combined interference cancellation and maximum likelihood decoding of space-time block codes - Google Patents
Combined interference cancellation and maximum likelihood decoding of space-time block codes Download PDFInfo
- Publication number
- CA2273295A1 CA2273295A1 CA002273295A CA2273295A CA2273295A1 CA 2273295 A1 CA2273295 A1 CA 2273295A1 CA 002273295 A CA002273295 A CA 002273295A CA 2273295 A CA2273295 A CA 2273295A CA 2273295 A1 CA2273295 A1 CA 2273295A1
- Authority
- CA
- Canada
- Prior art keywords
- terminal unit
- signals
- base station
- decoding
- antennas
- 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
- 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
- H04B1/7105—Joint detection techniques, e.g. linear detectors
- H04B1/71055—Joint detection techniques, e.g. linear detectors using minimum mean squared error [MMSE] detector
-
- 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
- H04B1/7105—Joint detection techniques, e.g. linear detectors
- H04B1/71057—Joint detection techniques, e.g. linear detectors using maximum-likelihood sequence estimation [MLSE]
-
- 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
-
- 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
- H04B7/12—Frequency diversity
-
- 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
- H04L1/04—Arrangements for detecting or preventing errors in the information received by diversity reception using frequency diversity
-
- 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
- H04L1/0618—Space-time coding
-
- 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
- H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
-
- 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
- H04B7/0857—Joint weighting using maximum ratio combining techniques, e.g. signal-to- interference ratio [SIR], received signal strenght indication [RSS]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
Block-encoded transmissions of a multi-antenna terminal unit are effectively detected in the presence of co-channel interfering transmissions from other multi-antenna terminal units, when the base station has a plurality of antennas, and interference cancellation is combined with maximum likehood decoding. The signals received in one base station antenna are employed in processing the signals received in a second base station antenna so as to cancel the signals of one terminal unit, while decoding the signals transmitted by the other terminal unit. Zero-forcing and MMSE approaches are presented. In another embodiment of the invention, the basic decoding approach is used to obtain an initial estimate for the symbols from each terminal. Assuming that the signals of the first terminal unit has been decoded correctly, the receiver employs this initial decoded signal of the first terminal unit to cancel their contribution to the signals received at the base station antennas while decoding the signals of the second terminal unit. This process is then repeated assuming that the signals of the second terminal unit have been decoded correctly; the receiver employs this initial decoded signal of the second terminal unit to cancel their contribution to the signals received at the base station antennas while decoding the signals of the first terminal unit. The above disclosed techniques are variable for any number K of terminal units concurrently transmitting over a given channel, where each terminal unit is using a space-time block code with N transmit antennas, and a base station has at least K receive antennas.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US6114597P | 1997-10-06 | 1997-10-06 | |
US60/061,145 | 1997-10-06 | ||
US09/149,163 US6178196B1 (en) | 1997-10-06 | 1998-09-04 | Combined interference cancellation and maximum likelihood decoding of space-time block codes |
US09/149,163 | 1998-09-04 | ||
PCT/US1998/020982 WO1999018682A2 (en) | 1997-10-06 | 1998-10-06 | Combined interference cancellation and maximum likelihood decoding of space-time block codes |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2273295A1 true CA2273295A1 (en) | 1999-04-15 |
CA2273295C CA2273295C (en) | 2003-12-16 |
Family
ID=26740775
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002273295A Expired - Fee Related CA2273295C (en) | 1997-10-06 | 1998-10-06 | Combined interference cancellation and maximum likelihood decoding of space-time block codes |
Country Status (4)
Country | Link |
---|---|
US (2) | US6178196B1 (en) |
EP (1) | EP0970570A2 (en) |
CA (1) | CA2273295C (en) |
WO (1) | WO1999018682A2 (en) |
Families Citing this family (91)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI103539B (en) * | 1996-07-03 | 1999-07-15 | Nokia Telecommunications Oy | A method for determining the strength of co-channel signals and corresponding note |
US6185258B1 (en) | 1997-09-16 | 2001-02-06 | At&T Wireless Services Inc. | Transmitter diversity technique for wireless communications |
US6178196B1 (en) * | 1997-10-06 | 2001-01-23 | At&T Corp. | Combined interference cancellation and maximum likelihood decoding of space-time block codes |
US6693982B1 (en) | 1997-10-06 | 2004-02-17 | At&T Corp. | Minimum mean squared error approach to interference cancellation and maximum likelihood decoding of space-time block codes |
DE69833780T2 (en) | 1997-10-31 | 2006-08-17 | Cingular Wireless Ii Llc. | MAXIMUM PROBABILITY DETECTION OF CHAINED SPACE / TIME CODES FOR CORDLESS APPLICATIONS WITH TRANSMITTER DIVERSITY |
US6088408A (en) * | 1998-11-06 | 2000-07-11 | At & T Corp. | Decoding for generalized orthogonal designs for space-time codes for wireless communication |
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 |
US7733966B2 (en) * | 1997-12-30 | 2010-06-08 | Summit Technology Systems, Lp | System and method for space diversified linear block interleaving |
US6459740B1 (en) * | 1998-09-17 | 2002-10-01 | At&T Wireless Services, Inc. | Maximum ratio transmission |
US6128330A (en) | 1998-11-24 | 2000-10-03 | Linex Technology, Inc. | Efficient shadow reduction antenna system for spread spectrum |
US6775260B1 (en) * | 1999-02-25 | 2004-08-10 | Texas Instruments Incorporated | Space time transmit diversity for TDD/WCDMA systems |
US7952511B1 (en) | 1999-04-07 | 2011-05-31 | Geer James L | Method and apparatus for the detection of objects using electromagnetic wave attenuation patterns |
US6594473B1 (en) * | 1999-05-28 | 2003-07-15 | Texas Instruments Incorporated | Wireless system with transmitter having multiple transmit antennas and combining open loop and closed loop transmit diversities |
US6853689B1 (en) * | 1999-07-15 | 2005-02-08 | Telefonaktiebolaget Lm Ericsson | Method and apparatus for channel estimation with transmit diversity |
FI19992829A (en) * | 1999-12-30 | 2001-07-01 | Nokia Networks Oy | Transmission of data in a radio system from transmitter to receiver |
US7477703B2 (en) * | 2000-02-22 | 2009-01-13 | Nokia Mobile Phones, Limited | Method and radio system for digital signal transmission using complex space-time codes |
US6865237B1 (en) | 2000-02-22 | 2005-03-08 | Nokia Mobile Phones Limited | Method and system for digital signal transmission |
US6542556B1 (en) * | 2000-03-31 | 2003-04-01 | Nokia Mobile Phones Ltd. | Space-time code for multiple antenna transmission |
AU2001270734A1 (en) * | 2000-07-04 | 2002-01-14 | Thales | Space-time coding digital transmission systems and methods |
US6834043B1 (en) * | 2000-07-24 | 2004-12-21 | Motorola, Inc. | Method and device for exploiting transmit diversity in time varying wireless communication systems |
US7065156B1 (en) * | 2000-08-31 | 2006-06-20 | Nokia Mobile Phones Ltd. | Hopped delay diversity for multiple antenna transmission |
US7020175B2 (en) | 2000-09-21 | 2006-03-28 | Motorola, Inc. | MMSE reception of DS-CDMA with transmit diversity |
US6650289B2 (en) | 2000-09-21 | 2003-11-18 | Microwave Networks Incorporated | Point to point communication system with parallel links |
FI20002845A (en) * | 2000-12-22 | 2002-06-23 | Nokia Corp | Digital signal transmission |
US7065148B2 (en) * | 2000-11-06 | 2006-06-20 | Broadcom Corporation | Super-orthogonal space-time trellis codes, and applications thereof |
US7050510B2 (en) * | 2000-12-29 | 2006-05-23 | Lucent Technologies Inc. | Open-loop diversity technique for systems employing four transmitter antennas |
US6748024B2 (en) | 2001-03-28 | 2004-06-08 | Nokia Corporation | Non-zero complex weighted space-time code for multiple antenna transmission |
US6961545B2 (en) * | 2001-04-09 | 2005-11-01 | Atheros Communications, Inc. | Method and system for providing antenna diversity |
US7929631B2 (en) * | 2001-04-23 | 2011-04-19 | Texas Instruments Incorporated | Multiple space time transmit diversity communication system with selected complex conjugate inputs |
WO2002087107A1 (en) * | 2001-04-25 | 2002-10-31 | Koninklijke Philips Electronics N.V. | Radio communication system |
GB0110125D0 (en) | 2001-04-25 | 2001-06-20 | Koninkl Philips Electronics Nv | Radio communication system |
US7471734B2 (en) * | 2001-04-26 | 2008-12-30 | Motorola, Inc. | Space-time transmit diversity scheme for time-dispersive propagation media |
US7801247B2 (en) * | 2001-05-01 | 2010-09-21 | Texas Instruments Incorporated | Multiple input, multiple output system and method |
US7778355B2 (en) * | 2001-05-01 | 2010-08-17 | Texas Instruments Incorporated | Space-time transmit diversity |
US8675772B2 (en) * | 2001-05-09 | 2014-03-18 | Alcatel Lucent | Method for multiple antenna transmission using partial channel knowledge |
JP4387791B2 (en) * | 2001-05-25 | 2009-12-24 | リージェンツ オブ ザ ユニバーシティ オブ ミネソタ | Space-time coded transmission method in a wireless communication network |
US7499499B2 (en) * | 2001-06-04 | 2009-03-03 | Alcatel-Lucent Usa Inc. | Method for multiple antenna transmission |
NO314677B1 (en) * | 2001-06-29 | 2003-04-28 | Optoplan As | FBG production system |
WO2003023996A1 (en) * | 2001-09-12 | 2003-03-20 | Infineon Technologies Ag | Cdma wireless systems |
US9270410B2 (en) | 2002-04-22 | 2016-02-23 | Texas Instruments Incorporated | MIMO PGRC system and method |
AU2003903826A0 (en) | 2003-07-24 | 2003-08-07 | University Of South Australia | An ofdm receiver structure |
FR2841068B1 (en) * | 2002-06-14 | 2004-09-24 | Comsis | METHOD FOR DECODING LINEAR SPACE-TIME CODES IN A MULTI-ANTENNA WIRELESS TRANSMISSION SYSTEM, AND DECODER IMPLEMENTING SUCH A METHOD |
CN1170374C (en) * | 2002-06-20 | 2004-10-06 | 大唐移动通信设备有限公司 | Space-time compilation code method suitable for frequency selective fading channels |
DE10239063A1 (en) * | 2002-08-26 | 2004-03-25 | Siemens Ag | Data symbol transmission method for communications system with simultaneous transmission of at least 2 data symbols via antenna element selected in dependence on data symbol coding |
US8194770B2 (en) * | 2002-08-27 | 2012-06-05 | Qualcomm Incorporated | Coded MIMO systems with selective channel inversion applied per eigenmode |
US7394860B2 (en) * | 2002-10-02 | 2008-07-01 | Nortel Networks Limited | Combined space-time decoding |
US8570988B2 (en) | 2002-10-25 | 2013-10-29 | Qualcomm Incorporated | Channel calibration for a time division duplexed communication system |
US8208364B2 (en) * | 2002-10-25 | 2012-06-26 | Qualcomm Incorporated | MIMO system with multiple spatial multiplexing modes |
US7151809B2 (en) | 2002-10-25 | 2006-12-19 | Qualcomm, Incorporated | Channel estimation and spatial processing for TDD MIMO systems |
US7986742B2 (en) * | 2002-10-25 | 2011-07-26 | Qualcomm Incorporated | Pilots for MIMO communication system |
US8170513B2 (en) * | 2002-10-25 | 2012-05-01 | Qualcomm Incorporated | Data detection and demodulation for wireless communication systems |
US8218609B2 (en) * | 2002-10-25 | 2012-07-10 | Qualcomm Incorporated | Closed-loop rate control for a multi-channel communication system |
US20040081131A1 (en) | 2002-10-25 | 2004-04-29 | Walton Jay Rod | OFDM communication system with multiple OFDM symbol sizes |
US8169944B2 (en) | 2002-10-25 | 2012-05-01 | Qualcomm Incorporated | Random access for wireless multiple-access communication systems |
US8320301B2 (en) * | 2002-10-25 | 2012-11-27 | Qualcomm Incorporated | MIMO WLAN system |
US7002900B2 (en) * | 2002-10-25 | 2006-02-21 | Qualcomm Incorporated | Transmit diversity processing for a multi-antenna communication system |
US8134976B2 (en) * | 2002-10-25 | 2012-03-13 | Qualcomm Incorporated | Channel calibration for a time division duplexed communication system |
US7324429B2 (en) | 2002-10-25 | 2008-01-29 | Qualcomm, Incorporated | Multi-mode terminal in a wireless MIMO system |
US7356093B2 (en) * | 2002-11-13 | 2008-04-08 | Wen-Chung Liu | Enhanced wireless communication system and method thereof |
US20080118003A1 (en) * | 2002-11-13 | 2008-05-22 | Industrial Technology Research Institute | Enhanced Wireless Communication System and Method Thereof |
US7688902B1 (en) | 2003-04-16 | 2010-03-30 | Marvell International Ltd. | Joint space-time block decoding and viterbi decoding |
US7342970B2 (en) * | 2003-05-02 | 2008-03-11 | Lucent Technologies Inc. | Array processing using an aggregate channel matrix generated using a block code structure |
TW575258U (en) * | 2003-05-23 | 2004-02-01 | Quanta Comp Inc | Wireless communication device |
DE10334723A1 (en) | 2003-07-30 | 2005-02-24 | Bayer Materialscience Ag | New binder combination for highly resistant plastic coatings |
US7643438B2 (en) * | 2003-08-28 | 2010-01-05 | Alcatel-Lucent Usa Inc. | Method of determining random access channel preamble detection performance in a communication system |
US20050111427A1 (en) * | 2003-11-21 | 2005-05-26 | Qinghua Li | SDMA training and operation |
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 |
US7260370B2 (en) * | 2003-12-10 | 2007-08-21 | James June-Ming Wang | Wireless communication system using a plurality of antenna elements with adaptive weighting and combining techniques |
GB2409384B (en) * | 2003-12-18 | 2005-11-30 | Toshiba Res Europ Ltd | Maximum likelihood sequence estimation equaliser |
US7206550B2 (en) | 2003-12-29 | 2007-04-17 | Intel Corporation | Antenna subsystem calibration apparatus and methods in spatial-division multiple-access systems |
US8369790B2 (en) | 2003-12-30 | 2013-02-05 | Intel Corporation | Communication overhead reduction apparatus, systems, and methods |
JP4517674B2 (en) * | 2004-02-25 | 2010-08-04 | パナソニック株式会社 | Wireless communication medium processing apparatus |
US20050281361A1 (en) * | 2004-06-16 | 2005-12-22 | Broadcom Corporation | Interference cancellation of STBC with multiple streams in OFDM for wlan |
US20050289537A1 (en) * | 2004-06-29 | 2005-12-29 | Lee Sam J | System and method for installing software on a computing device |
KR100913873B1 (en) * | 2004-09-13 | 2009-08-26 | 삼성전자주식회사 | Apparatus and method for higher rate differential space-time block codes |
GB2418111B (en) | 2004-09-14 | 2006-08-16 | Toshiba Res Europ Ltd | A receiver for use in a MIMO system |
CN1838556A (en) * | 2005-03-24 | 2006-09-27 | 松下电器产业株式会社 | Downlink multi-user space-time packet pre-coding method |
US7466749B2 (en) | 2005-05-12 | 2008-12-16 | 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 |
TWI422178B (en) * | 2005-12-06 | 2014-01-01 | Lg Electronics Inc | Method of transmitting signals for multiple antenna system |
KR100992418B1 (en) * | 2006-07-12 | 2010-11-05 | 삼성전자주식회사 | Apparatus and method for removing of interference in multi antenna system transmitter |
TW200816730A (en) * | 2006-09-18 | 2008-04-01 | Ind Tech Res Inst | Communication system and method for selecting codeword thereof |
US8155583B2 (en) | 2006-10-31 | 2012-04-10 | At&T Intellectual Property Ii, L.P. | Method and apparatus for providing broadband signals to a portable user device |
KR100975726B1 (en) * | 2007-03-02 | 2010-08-12 | 삼성전자주식회사 | System and method for transmitting and receiving signals in a communication system using a relay scheme |
FR2919132B1 (en) * | 2007-07-20 | 2011-04-29 | Eads Secure Networks | SIGNAL TRANSMISSION BY MULTIPLE ANTENNAS |
KR101502148B1 (en) * | 2009-03-04 | 2015-03-12 | 삼성전자주식회사 | Communication network of applying interference allignment scheme with low complexity |
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 |
JP2012060633A (en) * | 2010-08-11 | 2012-03-22 | Kddi Corp | Transmitter, receiver, method, and program for rotation orthogonal code based spectrum aggregation |
FR2965992B1 (en) * | 2010-10-08 | 2014-04-04 | Inst Telecom Telecom Paristech | METHOD AND SYSTEM FOR WDM TRANSMISSION WITH CHROMATO-TEMPORAL CODING |
KR101588712B1 (en) * | 2010-11-16 | 2016-01-26 | 삼성전자주식회사 | Method and apparatus of controlling inter cell interference based on cooperation of intra cell terminals |
US11239931B2 (en) | 2018-07-03 | 2022-02-01 | Istanbul Teknik Universitesi | Generalized frequency division multiplexing method with multiple-input multiple-output and flexible index modulation |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5147313A (en) | 1974-10-21 | 1976-04-22 | Nippon Telegraph & Telephone | |
JPH03135238A (en) | 1989-10-20 | 1991-06-10 | Nippon Telegr & Teleph Corp <Ntt> | Transmission method and reception method for error correction code data |
US5790606A (en) * | 1994-01-11 | 1998-08-04 | Ericsson Inc. | Joint demodulation using spatial maximum likelihood |
US5822380A (en) * | 1996-08-12 | 1998-10-13 | Ericsson Inc. | Apparatus and method for joint channel estimation |
US6178196B1 (en) * | 1997-10-06 | 2001-01-23 | At&T Corp. | Combined interference cancellation and maximum likelihood decoding of space-time block codes |
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 |
-
1998
- 1998-09-04 US US09/149,163 patent/US6178196B1/en not_active Expired - Lifetime
- 1998-10-06 EP EP98950937A patent/EP0970570A2/en not_active Withdrawn
- 1998-10-06 WO PCT/US1998/020982 patent/WO1999018682A2/en not_active Application Discontinuation
- 1998-10-06 CA CA002273295A patent/CA2273295C/en not_active Expired - Fee Related
-
2001
- 2001-01-22 US US09/767,019 patent/US6549585B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US6178196B1 (en) | 2001-01-23 |
US20010017903A1 (en) | 2001-08-30 |
EP0970570A2 (en) | 2000-01-12 |
WO1999018682A2 (en) | 1999-04-15 |
WO1999018682A3 (en) | 1999-07-22 |
CA2273295C (en) | 2003-12-16 |
US6549585B2 (en) | 2003-04-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2273295A1 (en) | Combined interference cancellation and maximum likelihood decoding of space-time block codes | |
USRE43812E1 (en) | Multiple-input multiple-output (MIMO) spread-spectrum system and method | |
JP3633872B2 (en) | Combination of channel coding and spatial block coding in multi-antenna structures | |
US7072611B2 (en) | Method and system for improving communication | |
US20150229349A1 (en) | Simple block space time transmit diversity using multiple spreading codes | |
WO1999004519A3 (en) | Combined array processing and space-time coding | |
NO982013D0 (en) | Method of transmission and reception, as well as radio system | |
CA2303388A1 (en) | Transmitter diversity technique for wireless communications | |
JP2004007828A (en) | Simple maximum likelihood detection of coupled spatial code for wireless machine | |
US8199855B2 (en) | Antenna diversity | |
TW200503436A (en) | Combined beamforming-diversity wireless fading channel demodulator using adapted sub-array group antennas, signal receiving system and method for mobile communications | |
EP1575188A3 (en) | Apparatus and method for receiving signal in a multiple-input multiple-output communication system | |
EP0773695A4 (en) | Cdma mobile communication method, system, and mobile station equipment | |
WO2003073609A8 (en) | Apparatus, and associated method, for a multiple-input, multiple-output communication system | |
CA2379122A1 (en) | Transmit diversity transmitter and receiver for radio communications systems | |
AU2002359468A8 (en) | Variable diversity transmission in a radio communications system based on characteristics of a received signal | |
MXPA04004196A (en) | System and method for mitigating fading of a signal at a radio receiver. | |
EP0921646A3 (en) | Digital radio communication system with diversity reception | |
EP1365522A3 (en) | Apparatus and method for up-link data communication | |
CA2405875C (en) | Transmitter diversity technique for wireless communications | |
Bu et al. | Space-time block precoding scheme for time division duplex CDMA communications | |
CA2495356C (en) | Transmitter diversity technique for wireless communications | |
Wang et al. | Interference suppression in multiple-input single-output antenna systems for WCDMA downlink transmissions | |
JPH02206924A (en) | Antenna for mobile communication | |
KR20050041348A (en) | A apparatus of receiving signal for mimo antenna system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20181009 |
|
MKLA | Lapsed |
Effective date: 20181009 |