NO20053188L - Fremgangsmate og anordning for multibruker interferenskansellering. - Google Patents

Fremgangsmate og anordning for multibruker interferenskansellering.

Info

Publication number
NO20053188L
NO20053188L NO20053188A NO20053188A NO20053188L NO 20053188 L NO20053188 L NO 20053188L NO 20053188 A NO20053188 A NO 20053188A NO 20053188 A NO20053188 A NO 20053188A NO 20053188 L NO20053188 L NO 20053188L
Authority
NO
Norway
Prior art keywords
signal
channel
bit stream
multiplied
separated
Prior art date
Application number
NO20053188A
Other languages
English (en)
Other versions
NO334966B1 (no
NO20053188D0 (no
Inventor
Qian Dai
Ying Liu
Meng Zhao
Original Assignee
Zte Corp Shenzhenshi Zhongxing
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 Zte Corp Shenzhenshi Zhongxing filed Critical Zte Corp Shenzhenshi Zhongxing
Publication of NO20053188D0 publication Critical patent/NO20053188D0/no
Publication of NO20053188L publication Critical patent/NO20053188L/no
Publication of NO334966B1 publication Critical patent/NO334966B1/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
    • H04B1/71075—Parallel 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
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • H04B1/7117—Selection, re-selection, allocation or re-allocation of paths to fingers, e.g. timing offset control of allocated fingers
    • 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
    • H04B2201/70701—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation featuring pilot assisted reception

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)

Abstract

Oppfinnelsen viser en fremgangsmåte og enhet for å eliminere interferens i et flerbrukersystem, der fremgangsmåten hovedsakelig omfatter: innsignalet på basisbåndet demultiplekses der båndspredningen anvender seg av en avspredningsenhet; det avspredde signalet fortsetter avspredningen med Walsh i en annen kanal slik at signalet i hver kanal for brukeren separeres; den separerte bitstrømmen for hver kanal multipliseres med et konjugert signal fra den estimerte verdien som er blitt matet ut av en pilotestimator A for å motvirke effekten av flerveisfading; den multipliserte bitstrømmen mates inn til beslutningskretsen for bestemmelse; tiltakene for å frembringe en nødvendig bestemmelsesterskelverdi og så videre, anvendelsen av to andre pilotestimatorer B og C likesom antallet abonnenter, type kanal og type tjeneste som tilveiebringes av systemet, innebærer at oppfinnelsen kan styre og behandle signalbeslutning og signalrekonstruering mer nøyaktig, nøyaktigheten øker ettersom interferensen elimineres, hvilket derved forbedrer systemutførelsen.
NO20053188A 2002-11-29 2005-06-29 Fremgangsmåte og anordning for multibruker interferenskansellering. NO334966B1 (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2002/000859 WO2004052036A1 (fr) 2002-11-29 2002-11-29 Procede et unite d'elimination d'interferences mulit-utilisateur

Publications (3)

Publication Number Publication Date
NO20053188D0 NO20053188D0 (no) 2005-06-29
NO20053188L true NO20053188L (no) 2005-08-29
NO334966B1 NO334966B1 (no) 2014-08-11

Family

ID=32400060

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20053188A NO334966B1 (no) 2002-11-29 2005-06-29 Fremgangsmåte og anordning for multibruker interferenskansellering.

Country Status (5)

Country Link
CN (1) CN100409707C (no)
AU (1) AU2002349470A1 (no)
NO (1) NO334966B1 (no)
SE (1) SE527387C2 (no)
WO (1) WO2004052036A1 (no)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101453278B (zh) * 2007-11-30 2013-03-27 中兴通讯股份有限公司 基于虚拟资源单元的多用户干扰消除方法及装置
CN104348517B (zh) * 2013-07-25 2018-01-09 日电（中国）有限公司 一种抵消多址干扰的方法及装置
CN107749771B (zh) * 2017-09-18 2019-11-12 哈尔滨工程大学 一种基于似然反馈的并行干扰消除算法
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

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6067454A (en) * 1998-04-14 2000-05-23 Telefonaktiebolaget Lm Ericsson (Publ) Mobile switching center restart recovery procedure
JP2970656B1 (ja) * 1998-06-25 1999-11-02 日本電気株式会社 Ｄｓ−ｃｄｍａマルチユーザ干渉キャンセラ
JP3121319B2 (ja) * 1998-12-17 2000-12-25 日本電気株式会社 Ｄｓ−ｃｄｍａマルチユーザ干渉キャンセラとそのシステム

Also Published As

Publication number Publication date
AU2002349470A1 (en) 2004-06-23
NO334966B1 (no) 2014-08-11
SE0501186L (sv) 2005-07-04
CN1685750A (zh) 2005-10-19
WO2004052036A1 (fr) 2004-06-17
CN100409707C (zh) 2008-08-06
NO20053188D0 (no) 2005-06-29
SE527387C2 (sv) 2006-02-21

Similar Documents

Publication Publication Date Title
JP4263368B2 (ja) 拡散スペクトル通信内の干渉相殺装置および方法
TW200623698A (en) Method and apparatus to estimate signal to interference plus noise ration (sinr) in a multiple antenna receiver
WO2007051206A3 (en) Method and apparatus for channel and noise estimation
WO2010046748A3 (en) Using the same multiplexed radio resource for pilot and information signals
GB0405166D0 (en) Method and arrangement for mitigation of intercell interference in a cellular communication system
TW200419999A (en) Composite channel quality estimation techniques for wireless receivers
TW200943847A (en) Receiver adjustment between pilot bursts
MY137816A (en) Data transmission rate control
TW200703942A (en) Channel estimation for interference cancellation
WO2006020157A3 (en) Use of adaptive filters in cdma wireless systems employing pilot signals
IL184139A0 (en) Adaptation of transmit subchannel gains in a system with interference cancellation
TW200723814A (en) Improved scheduling in wireless relaying networks
WO2002080432A3 (en) Successive user data multipath interference cancellation
TW200611519A (en) Transmitting high rate data within a MIMO WLAN
WO2008152819A1 (ja) 無線通信装置および応答信号拡散方法
TW200723748A (en) Method and system for a range reduction scheme for user selection in a multiuser MIMO downlink transmission
WO2009020931A3 (en) Dynamic multiplexing and de-multiplexing technique with enhanced synchronization
NO20053188L (no) Fremgangsmate og anordning for multibruker interferenskansellering.
CN100411318C (zh) 基于控制信道进行并行干扰对消的方法
DE602004031285D1 (de) Kanalschätzung eines empfangenen mehrweg cdma-signals
TW200501652A (en) Avoidance mechanism for co-channel interference in a wireless network
JP5211305B2 (ja) ノイズ分散を推定するための方法および装置
WO2009057302A1 (ja) 無線通信装置および系列制御方法
TW200723745A (en) Radio apparatus and communication system using the same
ATE510390T1 (de) Mimo-/sendediversitätskanalschätzung

Legal Events

Date Code Title Description
MM1K Lapsed by not paying the annual fees