BR0303392A - Método e aparelho para alocar uma portadora piloto adaptativamente em um sistema de acesso múltiplo por divisão de freq ência ortogonal - Google Patents

Método e aparelho para alocar uma portadora piloto adaptativamente em um sistema de acesso múltiplo por divisão de freq ência ortogonal

Info

Publication number
BR0303392A
BR0303392A BR0303392-9A BR0303392A BR0303392A BR 0303392 A BR0303392 A BR 0303392A BR 0303392 A BR0303392 A BR 0303392A BR 0303392 A BR0303392 A BR 0303392A
Authority
BR
Brazil
Prior art keywords
subchannel
pilot carriers
multiple access
frequency division
division multiple
Prior art date
Application number
BR0303392-9A
Other languages
English (en)
Inventor
Jung-Min Ro
Pan-Yuh Joo
Original Assignee
Samsung Electronics Co Ltd
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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of BR0303392A publication Critical patent/BR0303392A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • 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
    • H04L25/0226—Channel estimation using sounding signals sounding signals per se
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037—Inter-user or inter-terminal allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0078—Timing of allocation
    • H04L5/0085—Timing of allocation when channel conditions change

Landscapes

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

Abstract

"MéTODO E APARELHO PARA ALOCAR UMA PORTADORA PILOTO ADAPTATIVAMENTE EM UM SISTEMA DE ACESSO MúLTIPLO POR DIVISãO DE FREQUêNCIA ORTOGONAL". São revelados um método e um aparelho para alocar adaptativamente portadoras piloto em um sistema de comunicação OFDMA. Para melhorar o desempenho da estimação de erro de fase e otimizar o número de portadoras piloto alocadas a cada sub-canal, o transmissor OFDMA muda o número de portadoras piloto para um sub-canal de acordo com a situação do sub-canal. Conseq³entemente, menos portadoras piloto são alocadas a um sub-canal em estado bom, reduzindo o consumo de energia e mais portadoras piloto são alocadas ao sub-canal em estado ruim, melhorando o desempenho da estimação de canal apesar do maior consumo de energia.
BR0303392-9A 2002-03-16 2003-03-17 Método e aparelho para alocar uma portadora piloto adaptativamente em um sistema de acesso múltiplo por divisão de freq ência ortogonal BR0303392A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020020014334A KR100790114B1 (ko) 2002-03-16 2002-03-16 직교주파수 분할다중 접속 시스템에서 적응적 파일럿반송파 할당 방법 및 장치
PCT/KR2003/000511 WO2003079593A1 (en) 2002-03-16 2003-03-17 Method and apparatus for allocating a pilot carrier adaptively in an orthogonal frequency division multiple access system

Publications (1)

Publication Number Publication Date
BR0303392A true BR0303392A (pt) 2004-03-30

Family

ID=28036089

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0303392-9A BR0303392A (pt) 2002-03-16 2003-03-17 Método e aparelho para alocar uma portadora piloto adaptativamente em um sistema de acesso múltiplo por divisão de freq ência ortogonal

Country Status (10)

Country Link
US (1) US7283498B2 (pt)
EP (1) EP1486020A4 (pt)
JP (1) JP3950109B2 (pt)
KR (1) KR100790114B1 (pt)
CN (1) CN100534017C (pt)
AU (1) AU2003214664B2 (pt)
BR (1) BR0303392A (pt)
CA (1) CA2447457C (pt)
RU (1) RU2265280C2 (pt)
WO (1) WO2003079593A1 (pt)

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US7283498B2 (en) 2007-10-16
AU2003214664A1 (en) 2003-09-29
CA2447457C (en) 2010-06-29
WO2003079593A1 (en) 2003-09-25
EP1486020A1 (en) 2004-12-15
EP1486020A4 (en) 2009-12-30
RU2003133295A (ru) 2005-05-27
CN1515093A (zh) 2004-07-21
CN100534017C (zh) 2009-08-26
JP2005520432A (ja) 2005-07-07
US20030174643A1 (en) 2003-09-18
AU2003214664B2 (en) 2005-11-10
RU2265280C2 (ru) 2005-11-27
KR100790114B1 (ko) 2007-12-31
JP3950109B2 (ja) 2007-07-25
CA2447457A1 (en) 2003-09-25
KR20030075117A (ko) 2003-09-22

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