[go: up one dir, main page]

NO20010313L - Estimering av kanalimpulsrespons ved bruk av mottatt signalvarians - Google Patents

Estimering av kanalimpulsrespons ved bruk av mottatt signalvarians

Info

Publication number
NO20010313L
NO20010313L NO20010313A NO20010313A NO20010313L NO 20010313 L NO20010313 L NO 20010313L NO 20010313 A NO20010313 A NO 20010313A NO 20010313 A NO20010313 A NO 20010313A NO 20010313 L NO20010313 L NO 20010313L
Authority
NO
Norway
Prior art keywords
impulse response
estimation
received signal
channel impulse
estimated
Prior art date
Application number
NO20010313A
Other languages
English (en)
Other versions
NO20010313D0 (no
Inventor
Olli Piirainen
Aki Happonen
Original Assignee
Nokia Networks 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 Networks Oy filed Critical Nokia Networks Oy
Publication of NO20010313D0 publication Critical patent/NO20010313D0/no
Publication of NO20010313L publication Critical patent/NO20010313L/no

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0212—Channel estimation of impulse response

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Noise Elimination (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

Den foreliggende oppfinnelsen foreslår en innretning (1) for prosessering av mottatte signaler transmittert via en transmisjonskanal (4), idet innretningen omfat- ter en ervervingsanordning (2a) tilpasset til å oppnå en estimert responsfunksjon (h+e) til transmisjonskanalen (4), basert på de mottatte signalene (y); en utled- ningsanordning (2b) tilpasset til å utlede en estimert varians (62) til de mottatte sig- nalene (y); og en modifiseringsanordning (2c) tilpasset til å modifisere den esti- merte responsfunksjonen (h+e) ved å anvende den estimerte variansen (52) på den estimerte responsfunksjonen (h+e), for derved å oppnå en modifisert impuls- respons (h). Den foreliggende oppfinnelsen foreslår også en tilsvarende frem- gangsmåte.
NO20010313A 1998-07-21 2001-01-19 Estimering av kanalimpulsrespons ved bruk av mottatt signalvarians NO20010313L (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP1998/004562 WO2000005847A1 (en) 1998-07-21 1998-07-21 Channel impulse response estimation using received signal variance

Publications (2)

Publication Number Publication Date
NO20010313D0 NO20010313D0 (no) 2001-01-19
NO20010313L true NO20010313L (no) 2001-03-19

Family

ID=8167012

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20010313A NO20010313L (no) 1998-07-21 2001-01-19 Estimering av kanalimpulsrespons ved bruk av mottatt signalvarians

Country Status (8)

Country Link
US (1) US6816558B2 (no)
EP (1) EP1099328B1 (no)
CN (1) CN1130882C (no)
AT (1) ATE270482T1 (no)
AU (1) AU8732198A (no)
DE (1) DE69824898T2 (no)
NO (1) NO20010313L (no)
WO (1) WO2000005847A1 (no)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE223122T1 (de) 1998-11-18 2002-09-15 Nokia Corp Verfahren zur verbesserten schätzung der kanalimpulsantwort in tdma-systemen
CN1350734A (zh) 1999-05-17 2002-05-22 诺基亚公司 在时分多址系统中计算噪声能量的方法
DE60034306T2 (de) * 2000-02-28 2007-12-27 Lucent Technologies Inc. Verfahren und Empfänger zur Schätzung von Kanalstossantworten für die Entzerrung digitaler Signale
EP1128618A3 (en) * 2000-02-28 2004-08-25 Lucent Technologies Inc. Method for tracking a time-variant channel impulse response
EP1168739B1 (fr) * 2000-06-23 2005-10-19 STMicroelectronics N.V. Procédé et dispositif d'estimation de la réponse impulsionelle d'un canal de transmission d'informations, en particulier pour un téléphone mobile cellulaire
US7590175B2 (en) * 2003-05-20 2009-09-15 Rambus Inc. DFE margin test methods and circuits that decouple sample and feedback timing
US7627029B2 (en) * 2003-05-20 2009-12-01 Rambus Inc. Margin test methods and circuits
CN1625075A (zh) * 2003-12-05 2005-06-08 皇家飞利浦电子股份有限公司 一种用于无线通信体系的噪声方差估算方法及装置
AU2006200589A1 (en) * 2005-02-21 2006-09-07 Nec Australia Pty Ltd Method for antenna verification

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5251233A (en) 1990-12-20 1993-10-05 Motorola, Inc. Apparatus and method for equalizing a corrupted signal in a receiver
US5231648A (en) 1991-03-21 1993-07-27 Northern Telecom Limited Adaptive equalizer for digital cellular radio
US5329547A (en) * 1993-03-11 1994-07-12 Motorola, Inc. Method and apparatus for coherent communication in a spread-spectrum communication system
DE4311656C1 (de) * 1993-04-08 1994-04-21 Ant Nachrichtentech Geradeinterpolationsmethode zur Kanalstoßantwortadaption in Empfängern für TDMA-Mobilfunksysteme
US5581580A (en) 1993-05-20 1996-12-03 Telefonaktiebolaget Lm Ericsson Low complexity model based channel estimation algorithm for fading channels
FI98018C (fi) 1994-08-18 1997-03-25 Nokia Mobile Phones Ltd Menetelmä ja laite radiokanavan impulssivasteen mittaamiseksi
US5761088A (en) * 1995-12-18 1998-06-02 Philips Electronics North America Corporation Method and apparatus for channel identification using incomplete or noisy information
FI962140L (fi) * 1996-05-21 1997-11-22 Nokia Telecommunications Oy Menetelmä impulssivasteen estimoimiseksi sekä vastaanotin
JP3327227B2 (ja) * 1998-11-11 2002-09-24 三菱マテリアル株式会社 無線通信システム及び記録媒体

Also Published As

Publication number Publication date
NO20010313D0 (no) 2001-01-19
ATE270482T1 (de) 2004-07-15
CN1309857A (zh) 2001-08-22
EP1099328B1 (en) 2004-06-30
AU8732198A (en) 2000-02-14
US6816558B2 (en) 2004-11-09
CN1130882C (zh) 2003-12-10
WO2000005847A1 (en) 2000-02-03
DE69824898T2 (de) 2005-06-30
EP1099328A1 (en) 2001-05-16
DE69824898D1 (de) 2004-08-05
US20030007571A1 (en) 2003-01-09

Similar Documents

Publication Publication Date Title
AU1873899A (en) A method for improved channel impulse response estimation in tdma systems
WO2005050896A3 (en) Method and system for antenna interference cancellation
CA2269925A1 (en) Iterative channel estimation
WO2003001684A3 (en) A timing estimation method and apparatus for a location system
HUP0001298A2 (hu) Eljárás és berendezés csatornabecsléshez OFDM-elvű továbbító rendszerben
ES2165998T3 (es) Sistema de localizacion de posiciones.
MY122126A (en) Receiver apparatus, and associated method, for receving a receive signal transmitted upon a channel susceptible to interference
MY125290A (en) Estimated channel with varying number of taps
WO1998001956A3 (en) Microphone noise rejection system
MY130207A (en) Method and apparatus for power estimation in a communication system.
AU2003268002A8 (en) Frequency domain equalization of communication signals
ATE316664T1 (de) Servosteuerungsgerät welches die absolutwerte von eingangssignalen anwendet
EP0804007A3 (en) Adaptive equalizer with step size proportional to the estimated delay between received signals
WO1999065156A3 (en) Method and apparatus for training an echo canceler in a pcm modem context
DK0701752T3 (da) En fremgangsmåde og et apparat til bestemmelse af signalbrugbarhed
NO20010313L (no) Estimering av kanalimpulsrespons ved bruk av mottatt signalvarians
WO1998036553A3 (en) Method and apparatus for recovering quantized coefficients
TWI267264B (en) Method and apparatus for interference signal code power and noise variance estimation
WO2001048910A3 (de) Sender zum versenden von signalen über funkkanäle und verfahren zum senden von signalen über funkkanäle
AU2002366348A1 (en) Communication system comprising a first and second transceiver and method for the operation thereof
WO2001047335A3 (de) Verfahren zur elimination von störsignalanteilen in einem eingangssignal eines auditorischen systems, anwendung des verfahrens und ein hörgerät
NO994404L (no) Estimering av kanalimpulsrespons ved bruk av korrelasjon med linjefjerning
AU1339499A (en) A method for modifying the channel impulse response in tdma systems
WO2001052430A8 (en) Method for interference detection and cancellation in a tramsmission system
WO1997013378A3 (en) Apparatus and method for determining and using channel state information