ECSP077399A - Estimación de la variación del ruido en las comunicaciones inalámbricas por combinación de diversidad y escalamiento de logaritmo de verosimilitud - Google Patents

Estimación de la variación del ruido en las comunicaciones inalámbricas por combinación de diversidad y escalamiento de logaritmo de verosimilitud

Info

Publication number
ECSP077399A
ECSP077399A EC2007007399A ECSP077399A ECSP077399A EC SP077399 A ECSP077399 A EC SP077399A EC 2007007399 A EC2007007399 A EC 2007007399A EC SP077399 A ECSP077399 A EC SP077399A EC SP077399 A ECSP077399 A EC SP077399A
Authority
EC
Ecuador
Prior art keywords
logaritm
likelihood
estimation
scale
wireless communications
Prior art date
Application number
EC2007007399A
Other languages
English (en)
Inventor
Peter J Black
June Namgoong
Hao Xu
Srikant Jayaraman
Original Assignee
Qualcomm Inc
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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of ECSP077399A publication Critical patent/ECSP077399A/es

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
    • H04L25/0224—Channel estimation using sounding signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • 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
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
    • 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
    • H04L25/021—Estimation of channel covariance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Power Engineering (AREA)
  • Noise Elimination (AREA)
  • Radio Transmission System (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Dc Digital Transmission (AREA)

Abstract

La estimación de la variación del ruido incluye la recepción de una señal 402 incluyendo un símbolo OFDM que tiene, tonos en-banda incluyendo tonos pilotos en-banda, y tonos del límite de banda incluyendo los tonos pilotos del límite de banda y tonos protectores, estimación de una variación del ruido efectiva para los tonos en-banda 702 utilizando los tonos pilotos en-banda y las estimaciones del canal para los tonos pilotos en-banda, y estimando una variación del ruido efectiva para los tonos del límite de banda 704 utilizando los tonos pilotos del límite de banda, las estimaciones del canal para los tonos pilotos del límite de banda, y los tonos protectores.
EC2007007399A 2004-09-17 2007-04-13 Estimación de la variación del ruido en las comunicaciones inalámbricas por combinación de diversidad y escalamiento de logaritmo de verosimilitud ECSP077399A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US61102804P 2004-09-17 2004-09-17
US11/047,347 US7672383B2 (en) 2004-09-17 2005-01-28 Noise variance estimation in wireless communications for diversity combining and log-likelihood scaling

Publications (1)

Publication Number Publication Date
ECSP077399A true ECSP077399A (es) 2007-05-30

Family

ID=35519776

Family Applications (1)

Application Number Title Priority Date Filing Date
EC2007007399A ECSP077399A (es) 2004-09-17 2007-04-13 Estimación de la variación del ruido en las comunicaciones inalámbricas por combinación de diversidad y escalamiento de logaritmo de verosimilitud

Country Status (23)

Country Link
US (2) US7672383B2 (es)
EP (1) EP1792462B1 (es)
JP (3) JP2008514124A (es)
KR (1) KR100868834B1 (es)
CN (1) CN102546507B (es)
AT (1) ATE400957T1 (es)
AU (2) AU2005287062C1 (es)
BR (1) BRPI0515379A (es)
CA (2) CA2579512C (es)
DE (1) DE602005008082D1 (es)
DK (1) DK1792462T3 (es)
EC (1) ECSP077399A (es)
ES (1) ES2308563T3 (es)
IL (1) IL181901A (es)
MX (1) MX2007003232A (es)
MY (1) MY142379A (es)
NO (1) NO20071739L (es)
NZ (1) NZ553857A (es)
PT (1) PT1792462E (es)
RU (1) RU2346404C2 (es)
SG (1) SG155910A1 (es)
SI (1) SI1792462T1 (es)
WO (1) WO2006034020A1 (es)

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JP2010252362A (ja) 2010-11-04
US8126072B2 (en) 2012-02-28
JP5583652B2 (ja) 2014-09-03
MY142379A (en) 2010-11-30
NO20071739L (no) 2007-06-15
EP1792462A1 (en) 2007-06-06
DK1792462T3 (da) 2008-11-03
CN102546507A (zh) 2012-07-04
ES2308563T3 (es) 2008-12-01
US20060062322A1 (en) 2006-03-23
CN102546507B (zh) 2015-07-08
AU2009243448A1 (en) 2009-12-24
US7672383B2 (en) 2010-03-02
SG155910A1 (en) 2009-10-29
RU2007114295A (ru) 2008-10-27
IL181901A (en) 2011-10-31
JP2008514124A (ja) 2008-05-01
DE602005008082D1 (de) 2008-08-21
AU2005287062B2 (en) 2009-10-08
US20100054371A1 (en) 2010-03-04
BRPI0515379A (pt) 2008-07-22
JP2012075144A (ja) 2012-04-12
CA2730327A1 (en) 2006-03-30
AU2005287062C1 (en) 2010-04-29
IL181901A0 (en) 2007-07-04
NZ553857A (en) 2010-09-30
KR100868834B1 (ko) 2008-11-14
WO2006034020A1 (en) 2006-03-30
ATE400957T1 (de) 2008-07-15
KR20070053349A (ko) 2007-05-23
PT1792462E (pt) 2008-09-22
AU2005287062A1 (en) 2006-03-30
MX2007003232A (es) 2007-05-16
CA2579512A1 (en) 2006-03-30
EP1792462B1 (en) 2008-07-09
SI1792462T1 (sl) 2008-12-31
CA2579512C (en) 2011-11-22
RU2346404C2 (ru) 2009-02-10

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