IL135099A0 - Practical space-time radio method for cdma communication capacity enhancement - Google Patents

Practical space-time radio method for cdma communication capacity enhancement

Info

Publication number
IL135099A0
IL135099A0 IL13509998A IL13509998A IL135099A0 IL 135099 A0 IL135099 A0 IL 135099A0 IL 13509998 A IL13509998 A IL 13509998A IL 13509998 A IL13509998 A IL 13509998A IL 135099 A0 IL135099 A0 IL 135099A0
Authority
IL
Israel
Prior art keywords
downlink
signal
approach
training sequence
enhance
Prior art date
Application number
IL13509998A
Other languages
English (en)
Original Assignee
Adaptive Telecom 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 claimed from US08/929,638 external-priority patent/US6108565A/en
Application filed by Adaptive Telecom Inc filed Critical Adaptive Telecom Inc
Publication of IL135099A0 publication Critical patent/IL135099A0/xx

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
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0891—Space-time diversity
    • H04B7/0897—Space-time diversity using beamforming per multi-path, e.g. to cope with different directions of arrival [DOA] at different multi-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
    • 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
    • H04B7/0408—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more beams, i.e. beam 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
    • H04B7/0491—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more sectors, i.e. sector 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
    • H04B7/06—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
    • H04B7/08—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
    • H04B7/086—Weighted combining using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming

Landscapes

  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Engineering & Computer Science (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)
  • Radio Relay Systems (AREA)
  • Circuits Of Receivers In General (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Transmitters (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Electrotherapy Devices (AREA)
  • Transceivers (AREA)
  • Time-Division Multiplex Systems (AREA)
IL13509998A 1997-09-15 1998-09-15 Practical space-time radio method for cdma communication capacity enhancement IL135099A0 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US08/929,638 US6108565A (en) 1997-09-15 1997-09-15 Practical space-time radio method for CDMA communication capacity enhancement
US7147398P 1998-01-13 1998-01-13
US7797998P 1998-03-13 1998-03-13
US9315098P 1998-07-17 1998-07-17
US9734098P 1998-08-20 1998-08-20
PCT/US1998/019299 WO1999014870A2 (en) 1997-09-15 1998-09-15 Practical space-time radio method for cdma communication capacity enhancement

Publications (1)

Publication Number Publication Date
IL135099A0 true IL135099A0 (en) 2001-05-20

Family

ID=27535886

Family Applications (1)

Application Number Title Priority Date Filing Date
IL13509998A IL135099A0 (en) 1997-09-15 1998-09-15 Practical space-time radio method for cdma communication capacity enhancement

Country Status (14)

Country Link
EP (1) EP1062746B1 (id)
JP (2) JP4421106B2 (id)
KR (1) KR100650230B1 (id)
CN (1) CN1305230C (id)
AT (1) ATE262757T1 (id)
AU (1) AU9488598A (id)
CA (1) CA2302547C (id)
DE (1) DE69822672T2 (id)
HK (1) HK1032863A1 (id)
ID (1) ID25859A (id)
IL (1) IL135099A0 (id)
NO (1) NO20001026L (id)
PL (1) PL339462A1 (id)
WO (1) WO1999014870A2 (id)

Families Citing this family (57)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69829360T2 (de) * 1998-04-03 2006-04-13 Lucent Technologies Inc. Richtungsbestimmung in einem zellularen mobilen Kommunikationssystem
US6233612B1 (en) * 1998-08-31 2001-05-15 International Business Machines Corporation Dynamic network protocol management information base options
DE19916912A1 (de) * 1999-04-14 2000-11-09 Siemens Ag Strahlformungsverfahren der Abwärtsstrecke für Basisstationen in Funk-Kommunikationssystemen
KR100358427B1 (ko) * 1999-07-12 2002-10-25 한국전자통신연구원 씨디엠에이 적응배열안테나 시스템을 위한 효율적 구조의 복조기
US6453177B1 (en) * 1999-07-14 2002-09-17 Metawave Communications Corporation Transmitting beam forming in smart antenna array system
AU2001262587A1 (en) * 2000-05-05 2001-11-20 Celletra Ltd. System and method for providing polarization matching on a cellular communication forward link
CN1107424C (zh) * 2000-06-12 2003-04-30 信息产业部电信科学技术研究院 在频分双工无线通信系统中使用智能天线的方法与装置
US6535720B1 (en) * 2000-06-28 2003-03-18 Trw Inc. Digital power control system for a multi-carrier transmitter
US6662018B1 (en) * 2000-06-28 2003-12-09 Northrop Grumman Corporation Analog power control system for a multi-carrier transmitter
WO2002011301A2 (en) * 2000-08-01 2002-02-07 Repeater Technologies, Inc. Improved delay combiner system for cdma repeaters and low noise amplifiers
FR2815508B1 (fr) 2000-10-18 2003-01-03 Mitsubishi Electric Inf Tech Methode d'estimation de canal descendant
CN1129237C (zh) * 2000-11-15 2003-11-26 华为技术有限公司 无线通信系统中数字波束形成方法、模块及其阵列接收机
GB0031834D0 (en) 2000-12-29 2001-02-14 Nokia Networks Oy Parameter estimation for adaptive antenna system
US6847832B2 (en) * 2001-03-09 2005-01-25 Kathrein-Werke Kg System and method for providing phase matching with optimized beam widths
CN100388654C (zh) * 2001-05-03 2008-05-14 中兴通讯股份有限公司 一种基于多波束天线的宽带码分多址基站物理层实现方法
KR100591700B1 (ko) * 2001-10-06 2006-07-03 엘지노텔 주식회사 배열 안테나 시스템에서 신호 경로 탐색 방법 및 이를위한 장치
KR20030030590A (ko) * 2001-10-11 2003-04-18 주식회사 세스텍 스마트 안테나 시스템에서 심볼 레이트로 웨이팅하는핑거와, 그를 이용한 복조 장치 및 방법
KR20030031385A (ko) * 2001-10-15 2003-04-21 주식회사 세스텍 스마트 안테나 시스템에서 칩 레이트로 웨이팅하는핑거와, 그를 이용한 복조 장치 및 방법
KR20030033192A (ko) * 2001-10-18 2003-05-01 주식회사 세스텍 스마트 안테나 시스템에서 심볼레이트와 칩레이트를혼용하여 웨이팅하는 핑거와, 그를 이용한 복조 장치 및방법
TWI366412B (en) 2002-05-01 2012-06-11 Interdigital Tech Corp Method for receiving and transferring service data, base station for transferring service data and wireless transmit/receive unit for receiving service data
CA2483595C (en) 2002-05-01 2018-08-14 Interdigital Technology Corporation Point to multi-point services using shared channels in wireless communication systems
US6741653B2 (en) 2002-07-01 2004-05-25 Interdigital Technology Corporation Data detection for codes with non-uniform spreading factors
JP2004045042A (ja) * 2002-07-08 2004-02-12 Matsushita Electric Ind Co Ltd 位置算出装置及び位置算出方法
CN1297090C (zh) * 2002-07-30 2007-01-24 财团法人工业技术研究院 光切换器及光信号塞取机和光波长信号交换器
JP4514463B2 (ja) * 2003-02-12 2010-07-28 パナソニック株式会社 送信装置及び無線通信方法
GB0322685D0 (en) * 2003-09-27 2003-10-29 Koninkl Philips Electronics Nv Method of position determination
JP4608893B2 (ja) * 2003-10-20 2011-01-12 三菱電機株式会社 レーダ装置
US7434192B2 (en) * 2004-12-13 2008-10-07 Altera Corporation Techniques for optimizing design of a hard intellectual property block for data transmission
US8498669B2 (en) 2005-06-16 2013-07-30 Qualcomm Incorporated Antenna array calibration for wireless communication systems
US9118111B2 (en) 2005-11-02 2015-08-25 Qualcomm Incorporated Antenna array calibration for wireless communication systems
US8280430B2 (en) 2005-11-02 2012-10-02 Qualcomm Incorporated Antenna array calibration for multi-input multi-output wireless communication systems
JP4816171B2 (ja) * 2006-03-15 2011-11-16 ソニー株式会社 電子機器、電子機器システム及び通信方法
CN100387087C (zh) * 2006-07-10 2008-05-07 俞文蕴 双信道无线电监测和相关干涉测向移动站系统
CN100387086C (zh) * 2006-07-10 2008-05-07 俞文蕴 多信道无线电监测和相关干涉测向移动站系统
EP2078324B1 (en) 2006-10-31 2013-05-15 QUALCOMM Incorporated Apparatus and method for sensor-based wireless receive diversity
CN1972165B (zh) * 2006-12-15 2010-12-08 华为技术有限公司 一种干扰检测方法及装置
KR101358991B1 (ko) 2007-09-14 2014-02-06 삼성전자주식회사 다중 빔형성 방법 및 장치
KR100963333B1 (ko) 2007-12-18 2010-06-11 한국전자통신연구원 다중 안테나를 이용한 빔 형성 방법
US8676133B2 (en) * 2008-09-19 2014-03-18 Qualcomm Incorporated Reference signal design for LTE A
CN102098082B (zh) * 2009-12-11 2013-10-23 中国移动通信集团公司 信道簇跟踪方法及装置
JP5536614B2 (ja) * 2010-10-27 2014-07-02 京セラ株式会社 通信装置及び通信方法
KR101890419B1 (ko) * 2012-01-16 2018-08-21 삼성전자주식회사 기준신호를 송수신하기 위한 방법 및 장치
CN103017728B (zh) * 2012-12-31 2014-11-26 电子科技大学 干扰环境下天线阵列方向向量的测定方法
AU2013381337B2 (en) * 2013-04-25 2016-02-25 Intel Corporation Millimeter-wave communication device and method for intelligent control of transmit power and power density
CN105451270B (zh) * 2014-08-04 2019-03-01 上海诺基亚贝尔股份有限公司 在无线通信网络中用于确定发射时间的方法及装置
WO2016074706A1 (en) * 2014-11-12 2016-05-19 Huawei Technologies Co., Ltd. Apparatus and method for determining angle of departure for multi-input-multi-output downlink transmission
US10284239B2 (en) 2015-02-06 2019-05-07 Mitsubishi Electric Corporation Antenna device
US10075928B2 (en) 2016-08-19 2018-09-11 Qualcomm Incorporated Non-uniform transmission of synchronization signals
US10177904B2 (en) * 2016-12-21 2019-01-08 Intel IP Corporation Leveraging secondary synchronization signal properties to improve synchronization signal detection
EP3586470A4 (en) * 2017-02-24 2021-03-10 AMI Research & Development, LLC DIRECTIONAL MIMO ANTENNA
US11483053B2 (en) 2018-06-01 2022-10-25 Telefonaktiebolaget Lm Ericsson (Publ) Approaches for beam selection
RU2700688C1 (ru) 2018-09-24 2019-09-19 Самсунг Электроникс Ко., Лтд. Способы калибровки каналов фазированной антенной решетки
WO2020078547A1 (en) * 2018-10-17 2020-04-23 Nokia Solutions And Networks Oy Position likelihood based beamformer optimization
US11122571B2 (en) 2018-11-30 2021-09-14 Telefonaktiebolaget Lm Ericsson (Publ) Approaches for beam selection
CN111726191B (zh) * 2019-03-21 2024-07-02 中兴通讯股份有限公司 信号处理方法、装置及计算机可读存储介质
US11990973B2 (en) * 2020-04-20 2024-05-21 Telefonaktiebolaget Lm Ericsson (Publ) Beam management for a radio transceiver device
US20240195460A1 (en) * 2022-12-09 2024-06-13 Focal Point Positioning Limited Method and apparatus for performing direction division multiple access

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5103459B1 (en) * 1990-06-25 1999-07-06 Qualcomm Inc System and method for generating signal waveforms in a cdma cellular telephone system
US5592490A (en) * 1991-12-12 1997-01-07 Arraycomm, Inc. Spectrally efficient high capacity wireless communication systems
US5546090A (en) * 1991-12-12 1996-08-13 Arraycomm, Inc. Method and apparatus for calibrating antenna arrays
US5260968A (en) * 1992-06-23 1993-11-09 The Regents Of The University Of California Method and apparatus for multiplexing communications signals through blind adaptive spatial filtering
US5621752A (en) * 1994-06-23 1997-04-15 Qualcomm Incorporated Adaptive sectorization in a spread spectrum communication system
US5684491A (en) * 1995-01-27 1997-11-04 Hazeltine Corporation High gain antenna systems for cellular use
JPH08274687A (ja) * 1995-03-31 1996-10-18 Matsushita Electric Ind Co Ltd Ｃｄｍａ無線伝送装置およびｃｄｍａ無線伝送システム
JPH09284200A (ja) * 1996-04-10 1997-10-31 Mitsubishi Electric Corp 無線通信装置及び無線通信方法
CN1053313C (zh) * 1997-04-21 2000-06-07 北京信威通信技术有限公司 具有智能天线的时分双工同步码分多址无线通信系统及其通信方法

Also Published As

Publication number Publication date
JP4421106B2 (ja) 2010-02-24
JP2010035188A (ja) 2010-02-12
EP1062746A2 (en) 2000-12-27
CN1305230C (zh) 2007-03-14
CA2302547C (en) 2005-06-14
CA2302547A1 (en) 1999-03-25
DE69822672T2 (de) 2005-02-17
KR20010030605A (ko) 2001-04-16
WO1999014870A2 (en) 1999-03-25
NO20001026L (no) 2000-05-15
HK1032863A1 (en) 2001-08-03
JP2003521822A (ja) 2003-07-15
CN1278971A (zh) 2001-01-03
AU9488598A (en) 1999-04-05
PL339462A1 (en) 2000-12-18
ID25859A (id) 2000-11-09
EP1062746B1 (en) 2004-03-24
DE69822672D1 (de) 2004-04-29
WO1999014870A3 (en) 1999-06-24
KR100650230B1 (ko) 2006-11-24
NO20001026D0 (no) 2000-02-29
ATE262757T1 (de) 2004-04-15

Similar Documents

Publication Publication Date Title
IL135099A0 (en) Practical space-time radio method for cdma communication capacity enhancement
BR9812816A (pt) Processos para comunicação sem fio, e para eficientemente determinar na estação base um canal espacial da unidade móvel em um sistema de comunicação sem fio, e, estação base de cdma
CN1980088B (zh) 一种分布天线移动通信系统中的上行链路接收方法及设备
MY118073A (en) Method and apparatus for interference rejection combining and downlink beamforming in a cellular radiocommunications system.
KR101015933B1 (ko) 수신기에서의 신호 분리를 지원하기 위한 전송 패턴 파동
EP1330050A4 (en) METHOD AND DEVICE FOR DOWNWARD RECONDITIONING MULTIPLE ANTENNA TRANSMISSION IN WIRELESS COMMUNICATION SYSTEMS
WO2001071927A3 (en) Combined adaptive spatio-temporal processing and multi-user detection for cdma wireless systems
NO20021148D0 (no) Interferenskansellering i et spredt spektrum kommunikasjonssystem
Satyanarayana et al. Dual-function hybrid beamforming and transmit diversity aided millimeter wave architecture
Wells Increasing the capacity of GSM cellular radio using adaptive antennas
Gong et al. Channel estimation for sparse massive MIMO channels in low SNR regime
Zhu et al. Combined beamforming with space-time block coding using double antenna array group
Tataria Analysis of multiuser cellular systems over heterogeneous channels
Belaoura et al. Hybrid precoding for dl massive mu-mimo systems with distributed antenna deployments
Bengtsson Robust and constrained downlink beamforming
Hamalainen et al. Feedback schemes for FDD WCDMA systems in multipath environments
Ramezani et al. A novel discrete phase shift design for RIS-assisted multi-user MIMO
Wang et al. Performance enhancement of CDMA cellular systems with augmented antenna arrays
Salh et al. Achievable data rate using power allocation in downlink massive MIMO systems
Narula et al. Multiple-antenna transmission with partial side information
RAVINDRABABU et al. Performance Improvement and Complexity Reduction in Multi-user Detection Using Partial Pre-coding Techniques
Serebryakov et al. High resolution capability of adaptive antenna arrays for communication systems
Sharma et al. Performance Evaluation of Multi-user Massive MIMO Systems with Hybrid Precoding
Lim et al. Transmit antenna selection for sum rate maximization in transmit zero-forcing beamforming
Dankberg et al. A robust satellite system architecture for the mobile user objective system