NO984455L - FremgangsmÕte for Õ redusere interferens, samt radiosystem - Google Patents

FremgangsmÕte for Õ redusere interferens, samt radiosystem

Info

Publication number
NO984455L
NO984455L NO984455A NO984455A NO984455L NO 984455 L NO984455 L NO 984455L NO 984455 A NO984455 A NO 984455A NO 984455 A NO984455 A NO 984455A NO 984455 L NO984455 L NO 984455L
Authority
NO
Norway
Prior art keywords
interference
subscriber terminal
signals
phase
spreading code
Prior art date
Application number
NO984455A
Other languages
English (en)
Other versions
NO984455D0 (no
Inventor
Antti Toskala
Ari Hottinen
Original Assignee
Nokia Telecommunications Oy
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 Nokia Telecommunications Oy filed Critical Nokia Telecommunications Oy
Publication of NO984455D0 publication Critical patent/NO984455D0/no
Publication of NO984455L publication Critical patent/NO984455L/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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0023—Interference mitigation or co-ordination
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Foreliggende oppfinnelse angår en fremgangsmåte for å redusere interfe- rens, og et radiosystem hvor et signal som er spredningskodet ved hjelp av digital pseudostøy, benyttes for kommunikasjon. Siden forsinkelses-fordelingen for sig- nalene fra abonnentterminal-utstyr (12 til 16) ved basestasjoner (10 til 1t) er stor, og således signalenes innbyrdes interferens også kan være stor, justerer base- stasjonen (10 til 11) fasen for abonnentterminal-utstyrenes (12 tU 16) sprednings- koder, slik at interferensen reduseres. Dette foregår slik at fasen for abonnent- terminal-utstyrets (12 til 16) spredningskode f.eks. justeres ved å tilføye eller trek- ke fra chips i spredningskoden, hvorved krysskorrelasjonen for signalene fra for- skjellige abonnentterminal-utstyr (12 til 16) vil bli redusert ved basestasjonen (10 til 11). En annen mulighet er å hoppe spredningskodens fase i det minste mellom to forskjellige faser. Fremgangsmåten ifølge oppfinnelsen vil muliggjøre høyere datahastigheter enn tidligere, og redusere beregningen som er nødvendig for korrigering av interferens.
NO984455A 1996-03-25 1998-09-24 FremgangsmÕte for Õ redusere interferens, samt radiosystem NO984455L (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI961362A FI961362A (fi) 1996-03-25 1996-03-25 Häiriöiden vähentämismenetelmä ja radiojärjestelmä
PCT/FI1997/000186 WO1997036378A1 (en) 1996-03-25 1997-03-24 Method for reducing interference, and a radio system

Publications (2)

Publication Number Publication Date
NO984455D0 NO984455D0 (no) 1998-09-24
NO984455L true NO984455L (no) 1998-09-24

Family

ID=8545730

Family Applications (1)

Application Number Title Priority Date Filing Date
NO984455A NO984455L (no) 1996-03-25 1998-09-24 FremgangsmÕte for Õ redusere interferens, samt radiosystem

Country Status (8)

Country Link
US (1) US6377606B1 (no)
EP (1) EP0878057A1 (no)
JP (1) JP2000508133A (no)
CN (1) CN1214816A (no)
AU (1) AU718601B2 (no)
FI (1) FI961362A (no)
NO (1) NO984455L (no)
WO (1) WO1997036378A1 (no)

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KR100444980B1 (ko) * 1998-08-31 2004-10-14 삼성전자주식회사 가변율로전송된데이터의데이터율결정방법및장치
US6807405B1 (en) 1999-04-28 2004-10-19 Isco International, Inc. Method and a device for maintaining the performance quality of a code-division multiple access system in the presence of narrow band interference
JP3477520B2 (ja) * 1999-04-21 2003-12-10 松下電器産業株式会社 移動体通信装置、通信システム、及び通信方法
US6882631B1 (en) * 1999-09-13 2005-04-19 Qualcomm Incorporated Method and apparatus for overlaying two CDMA systems on the same frequency bandwidth
US7099372B2 (en) * 2000-10-27 2006-08-29 L-3 Communications Corporation Spreading code hopping for synchronous DS-CDMA system to mitigate interference effects
US7099374B2 (en) 2001-03-14 2006-08-29 Mercury Computer Systems, Inc. Wireless communication systems and methods for long-code communications for regenerative multiple user detection involving matched-filter outputs
US7301985B1 (en) 2003-06-30 2007-11-27 L-3 Communications Corporation Pseudo-noise code hopping method and apparatus
EP1700388B8 (en) * 2003-12-23 2017-09-13 OCT Circuit Technologies International Limited Umts receiver symbol synchronization
JP4583054B2 (ja) * 2004-03-05 2010-11-17 株式会社エヌ・ティ・ティ・ドコモ 移動局および基地局
US7349504B2 (en) * 2005-03-18 2008-03-25 Navini Networks, Inc. Method and system for mitigating interference in communication system
US8045660B1 (en) 2007-05-23 2011-10-25 Hypres, Inc. Wideband digital spectrometer
CN101662775B (zh) * 2008-08-27 2013-08-28 上海华为技术有限公司 一种减少基站干扰的方法、装置及系统
US9048919B2 (en) 2008-11-11 2015-06-02 Isco International Llc Method and apparatus for an adaptive filter architecture
US8385483B2 (en) 2008-11-11 2013-02-26 Isco International, Llc Self-adaptive digital RF bandpass and bandstop filter architecture
CN101798920A (zh) * 2010-04-12 2010-08-11 大港油田集团有限责任公司 能加载伪随机编码的可控信号发射仪
US8412246B2 (en) 2010-04-29 2013-04-02 Eden Rock Communications, Llc Systems and methods for coordinating the scheduling of beamformed data to reduce interference
US9319916B2 (en) 2013-03-15 2016-04-19 Isco International, Llc Method and appartus for signal interference processing
US9668223B2 (en) 2014-05-05 2017-05-30 Isco International, Llc Method and apparatus for increasing performance of communication links of communication nodes
EP3292642B1 (en) 2015-05-04 2020-01-29 ISCO International, LLC Method and apparatus for increasing performance of communication paths for communication nodes
MX2018014697A (es) 2016-06-01 2019-09-13 Isco Int Llc Metodo y aparato para realizar acondicionamiento de señales para mitigar la interferencia detectada en un sistema de comunicacion.
US10298279B2 (en) 2017-04-05 2019-05-21 Isco International, Llc Method and apparatus for increasing performance of communication paths for communication nodes
US10812121B2 (en) 2017-08-09 2020-10-20 Isco International, Llc Method and apparatus for detecting and analyzing passive intermodulation interference in a communication system
US10284313B2 (en) 2017-08-09 2019-05-07 Isco International, Llc Method and apparatus for monitoring, detecting, testing, diagnosing and/or mitigating interference in a communication system
CN109412642B (zh) * 2018-10-10 2021-05-18 华中科技大学 一种信号调制、解调方法及跳相调制、解调单元

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JPS6398235A (ja) * 1986-10-14 1988-04-28 Clarion Co Ltd スペクトラム拡散受信機
US4774715A (en) * 1987-03-11 1988-09-27 Telesystems Slw Inc. Device for demodulating a spread spectrum signal
US5887020A (en) * 1991-05-13 1999-03-23 Omnipoint Corporation Multi-band, multi-mode spread-spectrum communication system
US5594429A (en) * 1993-10-27 1997-01-14 Alps Electric Co., Ltd. Transmission and reception system and signal generation method for same
US5499236A (en) 1994-08-16 1996-03-12 Unisys Corporation Synchronous multipoint-to-point CDMA communication system
US5561395A (en) * 1995-01-27 1996-10-01 Motorola, Inc. Method and apparatus for self-adjusting a multistage radio frequency power amplifier
TW347626B (en) * 1995-03-27 1998-12-11 Sanyo Electric Co Spectrum diffusion signal receiver
JP2715987B2 (ja) * 1995-05-23 1998-02-18 日本電気株式会社 スペクトラム拡散通信方式用同期捕捉装置および同期捕捉方法
US5696766A (en) 1995-06-02 1997-12-09 Dsc Communications Corporation Apparatus and method of synchronizing a transmitter in a subscriber terminal of a wireless telecommunications system
ZA965340B (en) * 1995-06-30 1997-01-27 Interdigital Tech Corp Code division multiple access (cdma) communication system
US5872810A (en) * 1996-01-26 1999-02-16 Imec Co. Programmable modem apparatus for transmitting and receiving digital data, design method and use method for said modem

Also Published As

Publication number Publication date
NO984455D0 (no) 1998-09-24
CN1214816A (zh) 1999-04-21
JP2000508133A (ja) 2000-06-27
FI961362A (fi) 1997-09-26
EP0878057A1 (en) 1998-11-18
AU2161997A (en) 1997-10-17
WO1997036378A1 (en) 1997-10-02
US6377606B1 (en) 2002-04-23
AU718601B2 (en) 2000-04-20
FI961362A0 (fi) 1996-03-25

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