NO20060211L - Fremgangsmate og anordning for flerbrukerdeteksjon i telekommunikasjon - Google Patents

Fremgangsmate og anordning for flerbrukerdeteksjon i telekommunikasjon

Info

Publication number
NO20060211L
NO20060211L NO20060211A NO20060211A NO20060211L NO 20060211 L NO20060211 L NO 20060211L NO 20060211 A NO20060211 A NO 20060211A NO 20060211 A NO20060211 A NO 20060211A NO 20060211 L NO20060211 L NO 20060211L
Authority
NO
Norway
Prior art keywords
soft
user
estimates
dem
demodulators
Prior art date
Application number
NO20060211A
Other languages
English (en)
Inventor
Alexander Grant
Original Assignee
Inmarsat Ltd
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 Inmarsat Ltd filed Critical Inmarsat Ltd
Publication of NO20060211L publication Critical patent/NO20060211L/no

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
    • H04B1/7107—Subtractive interference cancellation
    • H04B1/71072—Successive interference cancellation
    • 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
    • H04B1/7107—Subtractive interference cancellation
    • H04B1/71075—Parallel interference cancellation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Error Detection And Correction (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

I en flerbnikerdeteksjonsmottaker mottar en flerbrukerdetektor DET et signal fra en multippel aksesskanal MA, og gjeldende myke estimater av hver brukers bidrag til det mottatte signal, og sender oppdaterte myke estimater for hver bruker ved å subtrahere gjeldende myke estimater av alle forstyrrende brukere. Det oppdaterte myke estimatet eller den myke demoduleringen av myke demodulatorer DEM!... DEM, de kodede signaler av de myke dekoderne DEC...DECsom forbedrer probabiliteten av de kodede biter avledet fra de myke demodulatorene DEMi ... DEMved å ta i betraktning kjennskapen til koden, sendes til de myke modulatorene Mi ... MK. For hver gjentagelse av MUD mottakeralgoritmen innhenter innhentingsfunksjonen ACQ tidsperioden av estimatene for hver av brukernes bidrag til kanalen for bruk av detektoren DET i den neste perioden som fører til forbedret innhentingsytelse i forhold til konvensjonelle enkeltbrukerteknikker.
NO20060211A 2003-06-16 2006-01-13 Fremgangsmate og anordning for flerbrukerdeteksjon i telekommunikasjon NO20060211L (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0313904A GB2403104B (en) 2003-06-16 2003-06-16 Communication method and apparatus
PCT/GB2003/003288 WO2004114535A1 (en) 2003-06-16 2003-07-29 Communication method and apparatus for multi-user detection

Publications (1)

Publication Number Publication Date
NO20060211L true NO20060211L (no) 2006-03-09

Family

ID=27636624

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20060211A NO20060211L (no) 2003-06-16 2006-01-13 Fremgangsmate og anordning for flerbrukerdeteksjon i telekommunikasjon

Country Status (8)

Country Link
US (1) US20070206664A1 (no)
EP (1) EP1683277A1 (no)
JP (1) JP2006527929A (no)
CN (1) CN1802796B (no)
AU (1) AU2003254496A1 (no)
GB (1) GB2403104B (no)
NO (1) NO20060211L (no)
WO (1) WO2004114535A1 (no)

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US8406695B2 (en) 2004-12-23 2013-03-26 Qualcomm Incorporated Joint interference cancellation of pilot, overhead and traffic channels
US8422955B2 (en) 2004-12-23 2013-04-16 Qualcomm Incorporated Channel estimation for interference cancellation
US8442441B2 (en) 2004-12-23 2013-05-14 Qualcomm Incorporated Traffic interference cancellation
EP1880480B1 (en) 2005-05-13 2016-02-03 Dspace Pty Ltd Method and system for communicating information in a digital signal
US8472877B2 (en) 2005-10-24 2013-06-25 Qualcomm Incorporated Iterative interference cancellation system and method
US8385388B2 (en) * 2005-12-06 2013-02-26 Qualcomm Incorporated Method and system for signal reconstruction from spatially and temporally correlated received samples
CN101406076B (zh) 2007-02-28 2010-06-02 华为技术有限公司 确定无线通信系统中传输时间的系统及方法
FI20075864A0 (fi) 2007-11-30 2007-11-30 Nokia Corp Laite, tietokoneohjelma ja menetelmä
JP5111131B2 (ja) * 2008-01-30 2012-12-26 京セラ株式会社 基地局装置および既知信号割り当て方法
US8254502B2 (en) 2008-12-22 2012-08-28 Qualcomm Incorporated Post decoding soft interference cancellation
US8311161B2 (en) 2009-06-19 2012-11-13 Xilinx, Inc. Sphere detector performing depth-first search until terminated
US8804886B2 (en) * 2010-06-24 2014-08-12 Telefonaktiebolaget L M Ericsson (Publ) Soft cancellation of inter-layer interference within a MIMO codeword
US20120195401A1 (en) 2011-02-01 2012-08-02 Neal Becker System and method for correlating received signal over time and frequency
EP2605032B1 (en) * 2011-12-15 2018-03-21 Commissariat à l'Énergie Atomique et aux Énergies Alternatives Localization method and system using non-regenerative UWB relays
US9137065B2 (en) * 2012-12-20 2015-09-15 Qualcomm Incorporated Systems and methods to mitigate phase noise
JP6686894B2 (ja) 2014-10-27 2020-04-22 ソニー株式会社 装置
US9948754B2 (en) 2016-02-18 2018-04-17 Mitsubishi Electric Research Laboratories, Inc. System and method for decoding asynchronously transmitted packets
US10326633B2 (en) * 2016-06-29 2019-06-18 Telefonaktiebolaget Lm Ericsson (Publ) Adaptive selection of signal-detection mode
US10178697B2 (en) * 2017-02-22 2019-01-08 Mitsubishi Electric Research Laboratories Systems and methods for separating collided packets in shared wireless channels
CN107592183A (zh) * 2017-09-19 2018-01-16 北京邮电大学 一种应用于非正交多址系统的多用户信号检测方法及装置

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US5521937A (en) * 1993-10-08 1996-05-28 Interdigital Technology Corporation Multicarrier direct sequence spread system and method
US6269075B1 (en) * 1998-01-26 2001-07-31 Nokia Mobile Phones Limited Finger assignment in a CDMA rake receiver
US6370129B1 (en) * 1999-06-28 2002-04-09 Lucent Technologies, Inc. High-speed data services using multiple transmit antennas
JP2001203669A (ja) * 2000-01-24 2001-07-27 Matsushita Electric Ind Co Ltd 無線基地局装置及び無線通信方法
US7106813B1 (en) * 2000-03-16 2006-09-12 Qualcomm, Incorporated Method and apparatus for combined soft-decision based interference cancellation and decoding
FR2813464B1 (fr) * 2000-08-29 2006-07-07 Mitsubishi Electric Inf Tech Methode de detection multi-utilisateur
FR2814014B1 (fr) * 2000-09-14 2002-10-11 Mitsubishi Electric Inf Tech Methode de detection multi-utilisateur
EP1329032B1 (en) * 2000-10-20 2006-12-27 Nortel Networks Limited Multi-user detector for direct sequence - code division multiple access (ds/cdma) channels
US6985531B2 (en) * 2001-07-13 2006-01-10 Cyntrust Communications, Inc. Dual domain differential encoder/decoder
CN1155189C (zh) * 2001-10-09 2004-06-23 华为技术有限公司 双层加权并行干扰对消方法的简化方法
US6931052B2 (en) * 2001-11-16 2005-08-16 Nortel Networks Limited Symbol-directed weighting in parallel interference cancellation
DE60312163T2 (de) 2002-06-14 2007-10-31 Dspace Pty. Ltd. Verfahren und Empfänger zum verarbeiten eines Mehrbenutzersignals
US7317770B2 (en) * 2003-02-28 2008-01-08 Nec Laboratories America, Inc. Near-optimal multiple-input multiple-output (MIMO) channel detection via sequential Monte Carlo
GB2403104B (en) 2003-06-16 2006-06-14 Inmarsat Ltd Communication method and apparatus

Also Published As

Publication number Publication date
GB2403104B (en) 2006-06-14
CN1802796A (zh) 2006-07-12
EP1683277A1 (en) 2006-07-26
AU2003254496A1 (en) 2005-01-04
JP2006527929A (ja) 2006-12-07
WO2004114535A1 (en) 2004-12-29
CN1802796B (zh) 2010-11-10
GB0313904D0 (en) 2003-07-23
GB2403104A (en) 2004-12-22
US20070206664A1 (en) 2007-09-06

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