NO994072L - Estimation of channel impulse response using Õ decomposition of singular value - Google Patents

Estimation of channel impulse response using Õ decomposition of singular value

Info

Publication number
NO994072L
NO994072L NO994072A NO994072A NO994072L NO 994072 L NO994072 L NO 994072L NO 994072 A NO994072 A NO 994072A NO 994072 A NO994072 A NO 994072A NO 994072 L NO994072 L NO 994072L
Authority
NO
Norway
Prior art keywords
present
impulse response
channel impulse
cir
estimation
Prior art date
Application number
NO994072A
Other languages
Norwegian (no)
Other versions
NO994072D0 (en
Inventor
Peter John White
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 NO994072L publication Critical patent/NO994072L/en
Publication of NO994072D0 publication Critical patent/NO994072D0/en

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
    • 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
    • H04L25/024—Channel estimation channel estimation algorithms
    • H04L25/0242—Channel estimation channel estimation algorithms using matrix methods
    • H04L25/0248—Eigen-space methods

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Noise Elimination (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

Foreliggende oppfinnelse angår estimering av GIR (kanalimpulsre- spons) og SINR (signal/(interferens-pluss-støy)-forhold) i CDMA-mottakere. Spesielt er foreliggende oppfinnelse rettet mot en fremgangsmåte for å be- stemme kanalimpulsresponsen CIR i et kommunikasjonssystem, slik som CIR for radiokanaler i et digitalt mobilradionett (GSM-nett). Spesielt angår foreliggende oppfinnelse bestemmelse av CIR basert på mottaking av en kjent treningssekvens. Foreliggende oppfinnelse finner også anvendelse ved interferenskansellering, og benyttes i CDMA-mottakere. Foreliggende oppfinnelse har opphav i den erkjennelse at problemene som er tilknyttet den tidligere kjente teknikk, kan minskes ved innledningsvis å transformere matrisen som oppnås gjennom nettverks-analyse, til en «diagonalmatrise», og så invertere den resulterende diagonalmatrisen. En ytterligere oppfin- nelse er å multiplisere den resiproke av egenverdien i den inverse med et avtakende tall, inntil sidelobene er fjernet eller så små at de har liten virk- ning.The present invention relates to estimation of GIR (channel impulse response) and SINR (signal / (interference plus noise) ratio) in CDMA receivers. In particular, the present invention is directed to a method for determining the channel impulse response CIR in a communication system, such as CIR for radio channels in a digital mobile radio network (GSM network). In particular, the present invention relates to the determination of CIR based on receiving a known training sequence. The present invention also finds application in interference cancellation and is used in CDMA receivers. The present invention has the recognition that the problems associated with the prior art can be reduced by initially transforming the matrix obtained through network analysis into a "diagonal matrix" and then inverting the resulting diagonal matrix. A further invention is to multiply the reciprocal of the intrinsic value in the inverse by a decreasing number until the side lobes are removed or so small that they have little effect.

NO994072A 1997-02-25 1999-08-24 Estimation of channel impulse response using singular value decomposition NO994072D0 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU14889/97A AU688228B1 (en) 1997-02-25 1997-02-25 A system and method of estimating CIR
PCT/FI1998/000159 WO1998038772A1 (en) 1997-02-25 1998-02-23 Channel impulse response estimation using singular value decomposition

Publications (2)

Publication Number Publication Date
NO994072L true NO994072L (en) 1999-08-24
NO994072D0 NO994072D0 (en) 1999-08-24

Family

ID=3704956

Family Applications (1)

Application Number Title Priority Date Filing Date
NO994072A NO994072D0 (en) 1997-02-25 1999-08-24 Estimation of channel impulse response using singular value decomposition

Country Status (6)

Country Link
EP (1) EP0963642A1 (en)
JP (1) JP2001513954A (en)
CN (1) CN1248370A (en)
AU (1) AU688228B1 (en)
NO (1) NO994072D0 (en)
WO (1) WO1998038772A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1314344B1 (en) * 1999-12-30 2002-12-09 Telit Mobile Terminals Spa RECEIVER METHOD AND WCDMA-UTRA / FDD TRANSMISSION SYSTEM
JP3805205B2 (en) * 2000-04-06 2006-08-02 株式会社エヌ・ティ・ティ・ドコモ Method and apparatus for measuring communication quality in CDMA cellular system
GB2365715B (en) * 2000-05-15 2004-04-28 Univ Bristol Circuit
KR100651962B1 (en) 2000-09-02 2006-11-30 엘지전자 주식회사 Signal Processing Method in Adaptive Antenna Array System
GB2370469B (en) * 2000-09-07 2004-10-27 Nec Corp Improvements in CDMA receivers
US7035353B2 (en) 2001-10-24 2006-04-25 Zenith Electronics Corporation Channel estimation method blending correlation and least-squares based approaches
US20040081131A1 (en) * 2002-10-25 2004-04-29 Walton Jay Rod OFDM communication system with multiple OFDM symbol sizes
CN1300962C (en) * 2002-12-31 2007-02-14 上海贝尔阿尔卡特股份有限公司 Method and device of equalized fast fading channel in orthogonal frequency dirision multiplex system
CN100539557C (en) * 2004-10-18 2009-09-09 威盛电子股份有限公司 Apparatus and method for predicting channel impulse response in global system for mobile communication
AU2006269566B2 (en) * 2005-07-13 2010-03-04 Exxonmobil Upstream Research Company Method for predicting the best and worst in a set of non-unique solutions
CN104950326B (en) * 2015-03-04 2016-09-28 中石化石油工程技术服务有限公司 The method for designing of controlled source nonlinear scanning signal based on target zone frequency spectrum
CN114018250B (en) * 2021-10-18 2024-05-03 杭州鸿泉物联网技术股份有限公司 Inertial navigation method, electronic device, storage medium and computer program product

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4945502A (en) * 1988-12-27 1990-07-31 Eastman Kodak Company Digital image sharpening method using SVD block transform
US5209237A (en) * 1990-04-12 1993-05-11 Felix Rosenthal Method and apparatus for detecting a signal from a noisy environment and fetal heartbeat obtaining method
DE4135953A1 (en) * 1991-10-31 1993-05-06 Rohde & Schwarz Gmbh & Co Kg, 8000 Muenchen, De METHOD FOR DETERMINING THE COMPLEX IMPULSE RESPONSE OF A RADIO CHANNEL

Also Published As

Publication number Publication date
CN1248370A (en) 2000-03-22
EP0963642A1 (en) 1999-12-15
NO994072D0 (en) 1999-08-24
WO1998038772A1 (en) 1998-09-03
JP2001513954A (en) 2001-09-04
AU688228B1 (en) 1998-03-05

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