SG152901A1 - Multiuser detector for variable spreading factors - Google Patents

Multiuser detector for variable spreading factors

Info

Publication number
SG152901A1
SG152901A1 SG200405574-5A SG2004055745A SG152901A1 SG 152901 A1 SG152901 A1 SG 152901A1 SG 2004055745 A SG2004055745 A SG 2004055745A SG 152901 A1 SG152901 A1 SG 152901A1
Authority
SG
Singapore
Prior art keywords
matrix
spreading factors
response
matrices
variable spreading
Prior art date
Application number
SG200405574-5A
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
Publication of SG152901A1 publication Critical patent/SG152901A1/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
    • 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

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (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)
  • Eye Examination Apparatus (AREA)
  • Circuits Of Receivers In General (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Radio Relay Systems (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
  • Complex Calculations (AREA)
  • Measurement Of Radiation (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Fire Alarms (AREA)
  • Push-Button Switches (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
SG200405574-5A 1999-09-21 2000-02-02 Multiuser detector for variable spreading factors SG152901A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15498599P 1999-09-21 1999-09-21

Publications (1)

Publication Number Publication Date
SG152901A1 true SG152901A1 (en) 2009-06-29

Family

ID=22553662

Family Applications (1)

Application Number Title Priority Date Filing Date
SG200405574-5A SG152901A1 (en) 1999-09-21 2000-02-02 Multiuser detector for variable spreading factors

Country Status (19)

Country Link
US (2) US7136369B2 (enExample)
EP (1) EP1214796B1 (enExample)
JP (2) JP4365063B2 (enExample)
KR (3) KR100493750B1 (enExample)
CN (3) CN1897473A (enExample)
AT (1) ATE287149T1 (enExample)
AU (1) AU2636500A (enExample)
BR (1) BR0014206A (enExample)
CA (1) CA2385082C (enExample)
DE (2) DE60017424T2 (enExample)
DK (1) DK1214796T3 (enExample)
ES (1) ES2234566T3 (enExample)
HK (1) HK1046338B (enExample)
IL (4) IL148607A0 (enExample)
MX (1) MXPA02002819A (enExample)
NO (2) NO325841B1 (enExample)
SG (1) SG152901A1 (enExample)
TW (1) TW493321B (enExample)
WO (1) WO2001022610A1 (enExample)

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WO2001022610A1 (en) 1999-09-21 2001-03-29 Interdigital Technology Corporation Multiuser detector for variable spreading factors
US6714527B2 (en) 1999-09-21 2004-03-30 Interdigital Techology Corporation Multiuser detector for variable spreading factors
WO2002073937A2 (en) 2001-03-14 2002-09-19 Mercury Computer Systems, Inc. Wireless communications methods and systems for long-code and other spread spectrum waveform processing
US7376175B2 (en) 2001-03-14 2008-05-20 Mercury Computer Systems, Inc. Wireless communications systems and methods for cache enabled multiple processor based multiple user detection
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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
AU2003261194A1 (en) * 2002-07-19 2004-02-09 Interdigital Technology Corporation Groupwise successive interference cancellation for block transmission with reception diversity
KR100557102B1 (ko) * 2002-09-07 2006-03-03 삼성전자주식회사 이동통신 시스템에서 직교부호의 길이에 상관없는 공동검출 수신 장치 및 방법
US7408978B2 (en) * 2002-09-09 2008-08-05 Interdigital Technology Corporation Extended algorithm data estimator
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
US7599346B2 (en) * 2002-11-19 2009-10-06 Bae Systems Information And Electronic Systems Integration Inc. Bandwidth-efficient wireless network modem
US6937644B2 (en) * 2003-01-10 2005-08-30 Interdigital Technology Corporation Generalized two-stage data estimation
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
US7245673B2 (en) * 2003-06-25 2007-07-17 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
US7437135B2 (en) 2003-10-30 2008-10-14 Interdigital Technology Corporation Joint channel equalizer interference canceller advanced receiver
US7400692B2 (en) 2004-01-14 2008-07-15 Interdigital Technology Corporation Telescoping window based equalization
US8503328B2 (en) 2004-09-01 2013-08-06 Qualcomm Incorporated Methods and apparatus for transmission of configuration information in a wireless communication network
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US7610025B2 (en) 2005-03-29 2009-10-27 Qualcomm Incorporated Antenna array pattern distortion mitigation
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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
US9130638B2 (en) 2011-05-26 2015-09-08 Cohere Technologies, Inc. Modulation and equalization in an orthonormal time-frequency shifting communications system
US10044841B2 (en) 2011-11-11 2018-08-07 Pismo Labs Technology Limited Methods and systems for creating protocol header for embedded layer two packets
WO2013068790A1 (en) * 2011-11-11 2013-05-16 Pismo Labs Technology Ltd. Protocol for layer two multiple network links tunnelling
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
WO2014052992A1 (en) 2012-11-07 2014-04-03 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
WO2013180816A2 (en) * 2012-11-07 2013-12-05 Massachusetts Institute Of Technology Method and apparatus for rate determination in a radio frequency system
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
US11690090B2 (en) 2019-05-21 2023-06-27 Massachusetts Institute Of Technology Mitigation of communication signal interference using adaptive transmit power
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

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Also Published As

Publication number Publication date
DE60017424T2 (de) 2005-12-29
CN1376338A (zh) 2002-10-23
CN1897473A (zh) 2007-01-17
CN1674456A (zh) 2005-09-28
US20020176392A1 (en) 2002-11-28
ES2234566T3 (es) 2005-07-01
WO2001022610A1 (en) 2001-03-29
CN100425010C (zh) 2008-10-08
US7136369B2 (en) 2006-11-14
AU2636500A (en) 2001-04-24
HK1046338A1 (en) 2003-01-03
US20080198828A1 (en) 2008-08-21
JP4365063B2 (ja) 2009-11-18
KR100493750B1 (ko) 2005-06-07
KR20040097241A (ko) 2004-11-17
KR20020038934A (ko) 2002-05-24
NO20021307D0 (no) 2002-03-15
WO2001022610A9 (en) 2004-04-01
NO20021307L (no) 2002-05-15
DK1214796T3 (da) 2005-04-04
JP2003510884A (ja) 2003-03-18
CA2385082A1 (en) 2001-03-29
IL182118A0 (en) 2007-07-24
JP2008017520A (ja) 2008-01-24
HK1046338B (en) 2005-08-19
CN1201499C (zh) 2005-05-11
US7778232B2 (en) 2010-08-17
CA2385082C (en) 2008-04-08
NO20081291L (no) 2002-05-15
MXPA02002819A (es) 2003-07-21
KR100495758B1 (ko) 2005-06-16
IL195539A (en) 2011-08-31
DE1214796T1 (de) 2002-11-28
EP1214796A1 (en) 2002-06-19
DE60017424D1 (de) 2005-02-17
BR0014206A (pt) 2002-05-21
IL148607A0 (en) 2002-09-12
ATE287149T1 (de) 2005-01-15
EP1214796B1 (en) 2005-01-12
NO325841B1 (no) 2008-07-28
KR20050039883A (ko) 2005-04-29
TW493321B (en) 2002-07-01
IL148607A (en) 2007-07-04
IL182118A (en) 2009-07-20

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