ATE287149T1 - Mehrbenutzerdetektor für variable spreizfaktoren - Google Patents

Mehrbenutzerdetektor für variable spreizfaktoren

Info

Publication number
ATE287149T1
ATE287149T1 AT00904639T AT00904639T ATE287149T1 AT E287149 T1 ATE287149 T1 AT E287149T1 AT 00904639 T AT00904639 T AT 00904639T AT 00904639 T AT00904639 T AT 00904639T AT E287149 T1 ATE287149 T1 AT E287149T1
Authority
AT
Austria
Prior art keywords
receiver
system transmission
cholesky decomposition
multiuser
transmission response
Prior art date
Application number
AT00904639T
Other languages
English (en)
Inventor
Alexander Reznik
Timothy J Lubecki
Ariela Zeira
Original Assignee
Interdigital Tech Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Interdigital Tech Corp filed Critical Interdigital Tech Corp
Application granted granted Critical
Publication of ATE287149T1 publication Critical patent/ATE287149T1/de

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
    • 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
    • H04B1/71052—Joint detection techniques, e.g. linear detectors using decorrelation matrix
    • 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
    • H04B1/709—Correlator structure
    • H04B1/7093—Matched filter type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70703—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation using multiple or variable rates
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70703—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation using multiple or variable rates
    • H04B2201/70705—Rate detection

Landscapes

  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Burglar Alarm Systems (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Particle Accelerators (AREA)
  • Circuits Of Receivers In General (AREA)
  • Eye Examination Apparatus (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Radio Relay Systems (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Fire Alarms (AREA)
  • Push-Button Switches (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)
  • Complex Calculations (AREA)
  • Measurement Of Radiation (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
AT00904639T 1999-09-21 2000-02-02 Mehrbenutzerdetektor für variable spreizfaktoren ATE287149T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US15498599P 1999-09-21 1999-09-21
PCT/US2000/002621 WO2001022610A1 (en) 1999-09-21 2000-02-02 Multiuser detector for variable spreading factors

Publications (1)

Publication Number Publication Date
ATE287149T1 true ATE287149T1 (de) 2005-01-15

Family

ID=22553662

Family Applications (1)

Application Number Title Priority Date Filing Date
AT00904639T ATE287149T1 (de) 1999-09-21 2000-02-02 Mehrbenutzerdetektor für variable spreizfaktoren

Country Status (19)

Country Link
US (2) US7136369B2 (de)
EP (1) EP1214796B1 (de)
JP (2) JP4365063B2 (de)
KR (3) KR100495758B1 (de)
CN (3) CN1201499C (de)
AT (1) ATE287149T1 (de)
AU (1) AU2636500A (de)
BR (1) BR0014206A (de)
CA (1) CA2385082C (de)
DE (2) DE60017424T2 (de)
DK (1) DK1214796T3 (de)
ES (1) ES2234566T3 (de)
HK (1) HK1046338B (de)
IL (4) IL148607A0 (de)
MX (1) MXPA02002819A (de)
NO (2) NO325841B1 (de)
SG (1) SG152901A1 (de)
TW (1) TW493321B (de)
WO (1) WO2001022610A1 (de)

Families Citing this family (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6714527B2 (en) 1999-09-21 2004-03-30 Interdigital Techology Corporation Multiuser detector for variable spreading factors
ATE287149T1 (de) 1999-09-21 2005-01-15 Interdigital Tech Corp Mehrbenutzerdetektor für variable spreizfaktoren
KR100383594B1 (ko) * 2001-06-01 2003-05-14 삼성전자주식회사 통신시스템의 하방향링크 공동검출 방법 및 장치
GB2380371A (en) 2001-10-01 2003-04-02 Ipwireless Inc Method and arrangement for use in a single user detector for a CDMA multi-path system using a finite impulse response filter
US20040004945A1 (en) * 2001-10-22 2004-01-08 Peter Monsen Multiple access network and method for digital radio systems
US6741653B2 (en) * 2002-07-01 2004-05-25 Interdigital Technology Corporation Data detection for codes with non-uniform spreading factors
KR100765873B1 (ko) 2002-07-19 2007-10-11 인터디지탈 테크날러지 코포레이션 수신 다이버시티를 갖는 블록 전송을 위한 그룹형 직렬간섭 제거
KR100557102B1 (ko) * 2002-09-07 2006-03-03 삼성전자주식회사 이동통신 시스템에서 직교부호의 길이에 상관없는 공동검출 수신 장치 및 방법
CN1170389C (zh) * 2002-11-13 2004-10-06 大唐移动通信设备有限公司 在联合检测系统中应用长小区化码的方法
CN1186950C (zh) 2002-11-13 2005-01-26 大唐移动通信设备有限公司 扩谱系数可变的多用户解调方法
EP1563625A4 (de) * 2002-11-19 2009-12-16 Bae Systems Information Bandbreiteneffizientes drahtloses netzwerkmodem
CN1723629A (zh) * 2003-01-10 2006-01-18 美商内数位科技公司 通用二阶段数据估测
US8064494B2 (en) * 2003-05-28 2011-11-22 Qualcomm Incorporated Last finger polling for rake receivers
CN100433603C (zh) * 2003-06-24 2008-11-12 华为技术有限公司 一种码多分址（cdma）通信系统中的多用户检测方法
AU2003247654A1 (en) * 2003-06-25 2005-02-14 Bae Systems Information And Electronic Systems Integration Inc Windowed multiuser detection
US7236546B2 (en) 2003-09-10 2007-06-26 Bae Systems Information And Electronic Systems Integration Inc. Pipelined turbo multiuser detection
US8503328B2 (en) 2004-09-01 2013-08-06 Qualcomm Incorporated Methods and apparatus for transmission of configuration information in a wireless communication network
GB2418327A (en) * 2004-09-17 2006-03-22 Toshiba Res Europ Ltd Common channel interference cancellation in a CDMA system
US7610025B2 (en) 2005-03-29 2009-10-27 Qualcomm Incorporated Antenna array pattern distortion mitigation
CN101170527B (zh) * 2006-10-24 2010-07-14 中兴通讯股份有限公司 一种基于mmse的mlse简化检测方法及其装置
GB2463872B (en) * 2008-09-24 2012-04-18 Toshiba Res Europ Ltd A MMSE equaliser
US9130638B2 (en) 2011-05-26 2015-09-08 Cohere Technologies, Inc. Modulation and equalization in an orthonormal time-frequency shifting communications system
US8547988B2 (en) * 2010-05-28 2013-10-01 Ronny Hadani Communications method employing orthonormal time-frequency shifting and spectral shaping
US9071285B2 (en) 2011-05-26 2015-06-30 Cohere Technologies, Inc. Modulation and equalization in an orthonormal time-frequency shifting communications system
EP2777217B1 (de) * 2011-11-11 2020-01-08 Pismo Labs Technology Ltd. Layer-2-tunneling-protokoll für mehrere netzwerkverbindungen
US10044841B2 (en) 2011-11-11 2018-08-07 Pismo Labs Technology Limited Methods and systems for creating protocol header for embedded layer two packets
US10469215B2 (en) 2012-06-25 2019-11-05 Cohere Technologies, Inc. Orthogonal time frequency space modulation system for the Internet of Things
US10411843B2 (en) 2012-06-25 2019-09-10 Cohere Technologies, Inc. Orthogonal time frequency space communication system compatible with OFDM
WO2013180816A2 (en) * 2012-11-07 2013-12-05 Massachusetts Institute Of Technology Method and apparatus for rate determination in a radio frequency system
US9693361B2 (en) 2012-11-07 2017-06-27 Massachusetts Institute Of Technology Cognitive radio method and apparatus for achieving ad hoc interference multiple access wireless communication
US10091798B2 (en) 2012-11-07 2018-10-02 Massachusetts Institute Of Technology Cognitive radio method and apparatus for achieving ad hoc interference multiple access wireless communication
US9148804B2 (en) 2012-11-07 2015-09-29 Massachusetts Institute Of Technology Method and apparatus for making optimal use of an asymmetric interference channel in wireless communication systems
WO2013185150A1 (en) 2013-03-14 2013-12-12 Massachusetts Institute Of Technology Method and apparatus for smart adaptive dynamic range multiuser detection radio receiver
US9699665B2 (en) 2014-06-16 2017-07-04 Massachusetts Institute Of Technology Cognitive radio method and apparatus for achieving ad hoc interference multiple access wireless communication
US10299281B2 (en) 2014-06-16 2019-05-21 Massachusetts Institute Of Technology Cognitive radio method and apparatus for achieving ad hoc interference multiple access wireless communication
US10159004B2 (en) 2014-11-03 2018-12-18 Massachusetts Institute Of Technology Message fractionation and physical layer channel assignment for multiuser detection-enabled wireless communication among adaptive interference
US10574317B2 (en) 2015-06-18 2020-02-25 Cohere Technologies, Inc. System and method for providing wireless communication services using configurable broadband infrastructure shared among multiple network operators
US11522600B1 (en) 2018-08-01 2022-12-06 Cohere Technologies, Inc. Airborne RF-head system
US11637613B1 (en) 2019-05-21 2023-04-25 Massachusetts Institute Of Technology Method and apparatus for determining a receiver beam in a co-existence cognitive radio
US11005507B2 (en) 2019-06-14 2021-05-11 Massachusetts Institute Of Technology Targeted ratio of signal power to interference plus noise power for enhancement of a multi-user detection receiver

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5151919A (en) 1990-12-17 1992-09-29 Ericsson-Ge Mobile Communications Holding Inc. Cdma subtractive demodulation
US5204874A (en) 1991-08-28 1993-04-20 Motorola, Inc. Method and apparatus for using orthogonal coding in a communication system
ZA965340B (en) * 1995-06-30 1997-01-27 Interdigital Tech Corp Code division multiple access (cdma) communication system
EP0767543A3 (de) 1995-10-06 2000-07-26 Siemens Aktiengesellschaft Kodemultiplexnachrichtenübertragung mit Interferenzunterdrückung
FI100041B (fi) 1995-12-29 1997-08-29 Nokia Telecommunications Oy Menetelmä signaalin ja kohinan laadun estimoimiseksi ja vastaanotin
DE19616829C1 (de) * 1996-04-26 1997-04-24 Siemens Ag System zur Funkübertragung digitaler Signale zwischen mehreren Teilnehmerstationen und einer Basisstation
BR9812816A (pt) * 1997-09-15 2000-08-08 Adaptive Telecom Inc 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
KR19990052334A (ko) * 1997-12-22 1999-07-05 서평원 직접확산 코드분할 다중접속 시스템의 다중사용자 검파장치 및 방법
US6339612B1 (en) 1998-02-09 2002-01-15 Motorola, Inc. Method and apparatus for joint detection of data in a direct sequence spread spectrum communications system
US6307867B1 (en) 1998-05-14 2001-10-23 Telefonaktiebolaget Lm Ericsson (Publ) Data transmission over a communications link with variable transmission rates
US6463097B1 (en) 1998-10-16 2002-10-08 Koninklijke Philips Electronics N.V. Rate detection in direct sequence code division multiple access systems
DE19852571C1 (de) 1998-11-13 2000-06-21 Siemens Ag Verfahren zur Datenübertragung in einem Funk-Kommunikationssystem mit CDMA-Teilnehmerseparierung und variablen Spreizfaktoren
US6775260B1 (en) * 1999-02-25 2004-08-10 Texas Instruments Incorporated Space time transmit diversity for TDD/WCDMA systems
FR2793363B1 (fr) 1999-05-04 2001-07-06 France Telecom Procede de detection conjointe d'un ensemble de codes cdma
JP3485498B2 (ja) 1999-06-28 2004-01-13 株式会社ケンウッド Ｃｄｍａ用受信装置及びそのパス探索方法
US6831944B1 (en) * 1999-09-14 2004-12-14 Interdigital Technology Corporation Reduced computation in joint detection
ATE287149T1 (de) 1999-09-21 2005-01-15 Interdigital Tech Corp Mehrbenutzerdetektor für variable spreizfaktoren
US6714527B2 (en) 1999-09-21 2004-03-30 Interdigital Techology Corporation Multiuser detector for variable spreading factors
JP2001111456A (ja) 1999-10-06 2001-04-20 Nec Corp Ｃｄｍａ受信機及び受信方法
IT1314346B1 (it) 1999-12-30 2002-12-09 Telit Mobile Terminals Spa Metodo e dispositivo per la generazione di codici ortogonali a fattore di spreading variabile o righe di matricidi hadamard per sistemi di
JP3424748B2 (ja) 2000-05-25 2003-07-07 日本電気株式会社 Ｃｄｍａ受信装置およびレート整合処理方法
JP2001358613A (ja) 2000-06-14 2001-12-26 Fujitsu Ltd Ｃｄｍａ受信装置
WO2002013395A2 (en) 2000-08-04 2002-02-14 Telefonaktiebolaget Lm Ericsson (Publ) Spreading factor detector
FR2825856B1 (fr) * 2001-06-06 2003-09-12 Nortel Networks Ltd Procede et dispositif de traitement de signal dans un recepteur de radiocommunication a etalement de spectre
WO2007131384A1 (fr) * 2006-05-12 2007-11-22 Daoben Li Procédé de codage de plusieurs adresses de temps, espace, fréquence groupées

Also Published As

Publication number Publication date
US7778232B2 (en) 2010-08-17
US20080198828A1 (en) 2008-08-21
ES2234566T3 (es) 2005-07-01
KR20040097241A (ko) 2004-11-17
DE60017424D1 (de) 2005-02-17
JP4365063B2 (ja) 2009-11-18
CN1376338A (zh) 2002-10-23
NO20081291L (no) 2002-05-15
CA2385082A1 (en) 2001-03-29
IL148607A (en) 2007-07-04
WO2001022610A9 (en) 2004-04-01
JP2003510884A (ja) 2003-03-18
TW493321B (en) 2002-07-01
JP2008017520A (ja) 2008-01-24
US7136369B2 (en) 2006-11-14
KR100493750B1 (ko) 2005-06-07
IL148607A0 (en) 2002-09-12
SG152901A1 (en) 2009-06-29
HK1046338B (zh) 2005-08-19
BR0014206A (pt) 2002-05-21
AU2636500A (en) 2001-04-24
HK1046338A1 (en) 2003-01-03
IL195539A (en) 2011-08-31
CA2385082C (en) 2008-04-08
WO2001022610A1 (en) 2001-03-29
KR100495758B1 (ko) 2005-06-16
CN1674456A (zh) 2005-09-28
IL182118A0 (en) 2007-07-24
KR20050039883A (ko) 2005-04-29
NO325841B1 (no) 2008-07-28
NO20021307D0 (no) 2002-03-15
EP1214796B1 (de) 2005-01-12
CN100425010C (zh) 2008-10-08
CN1897473A (zh) 2007-01-17
CN1201499C (zh) 2005-05-11
DE60017424T2 (de) 2005-12-29
MXPA02002819A (es) 2003-07-21
NO20021307L (no) 2002-05-15
DE1214796T1 (de) 2002-11-28
EP1214796A1 (de) 2002-06-19
US20020176392A1 (en) 2002-11-28
IL182118A (en) 2009-07-20
DK1214796T3 (da) 2005-04-04
KR20020038934A (ko) 2002-05-24

Similar Documents

Publication Publication Date Title
ATE287149T1 (de) Mehrbenutzerdetektor für variable spreizfaktoren
WO2002073230A3 (en) Wireless communications methods and systems for short-code and other spread spectrum waveform processing
DE69523569D1 (de) Cdma-empfangsverfahren und empfänger
Jamal et al. Multi-stage serial interference cancellation for DS-CDMA
AU1622400A (en) Apparatus and methods for interference cancellation in spread spectrum communication system
Mitra et al. Analysis of an adaptive decorrelating detector for synchronous CDMA channels
WO2006115459A3 (en) Joint detector in a code division multiple access radio receiver
TW200718046A (en) Multiuser detector for variable spreading factors
MY122627A (en) Apparatus and methods for receiving information using variable length accumulation searchers
Juntti Multiuser detector performance comparisons in multirate CDMA systems
TW200620854A (en) Efficient spreader for spread spectrum communication systems
EP1561289B1 (de) MMSE Mehrbenutzer-Detektion mit reduzierter Komplexität für Multirate CDMA Übertragung
Krauss et al. MMSE equalization for forward link in 3G CDMA: symbol-level versus chip-level
ATE408280T1 (de) Iterative chipentzerrung und mehrbenutzerdetektion in cdma kommunikationssystemen durch mimo kanal
DE60313901D1 (de) Mehrstufige Entspreizung von Spreizspektrum-Kommunikationssignalen
Guo et al. Asymptotic normality of linear CDMA multiuser detect
Detert et al. Complete complementary codes applied to UTRA FDD asynchronous uplink
Yongyu et al. Grouped parallel multiuser detector for CDMA mobile communication
Yongyu et al. A new type of multiuser detector for CDMA mobile communication
Holbrook et al. A crosscorrelation reduction receiver robust to the near-end effect
Sheng et al. TD-SCDMA

Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties