BRPI0415840A - multiplexação por divisão de freqüência de múltiplos fluxos de dados em um sistema de comunicação de multi-portadora sem fio - Google Patents

multiplexação por divisão de freqüência de múltiplos fluxos de dados em um sistema de comunicação de multi-portadora sem fio

Info

Publication number
BRPI0415840A
BRPI0415840A BRPI0415840-7A BRPI0415840A BRPI0415840A BR PI0415840 A BRPI0415840 A BR PI0415840A BR PI0415840 A BRPI0415840 A BR PI0415840A BR PI0415840 A BRPI0415840 A BR PI0415840A
Authority
BR
Brazil
Prior art keywords
subbands
frequency division
division multiplexing
partition
multiple data
Prior art date
Application number
BRPI0415840-7A
Other languages
English (en)
Inventor
Rajiv Vijayan
Kent G Walker
Raghuraman Krishnamoorthi
Ramaswamy Murali
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
Priority claimed from US10/932,586 external-priority patent/US7221680B2/en
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of BRPI0415840A publication Critical patent/BRPI0415840A/pt

Links

Classifications

    • 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
    • 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
    • H04L5/0064—Rate requirement of the data, e.g. scalable bandwidth, data priority
    • 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
    • H04L5/0039—Frequency-contiguous, i.e. with no allocation of frequencies for one user or terminal between the frequencies allocated to another
    • 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
    • H04L5/0044—Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
    • H04L5/0046—Determination of the number of bits transmitted on different sub-channels
    • 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
    • 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
    • H04L27/2655—Synchronisation arrangements
    • 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

Landscapes

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

Abstract

"MULTIPLEXAçãO POR DIVISãO DE FREQüêNCIA DE MúLTIPLOS FLUXO DE DADOS EM UM SISTEMA DE COMUNICAçãO MULTIPORTADORA SEM FIO". São descritas técnicas para multiplexar múltiplos fluxo de dados usando multiplexação por divisão de freqüência (FDM) em um sistema OFDM. São formados M 'entrelaçamentos' separados ou desligados com U sub-bandas utilizáveis. Cada entrelaçamento constitui um conjunto diferente de S sub-bandas, em que as sub-bandas para cada entrelaçamento estão entrelaçadas com as sub-bandas para cada um dos outros entrelaçamentos. Podem ser definidas M partições para cada período de símbolos, que recebem os índices de partição 1 a M. Os índices de partição podem ser mapeados para entrelaçamentos de tal forma que (1) seja obtida diversidade de freqüência para cada índice de partição e (2) os entrelaçamentos usados para transmissão de piloto possuem distâncias variáveis para os entrelaçamentos usados para cada índice de partição, o que melhora o desempenho de estimativa de canal. Cada fluxo de dados pode ser processado na forma de pacotes de dados de um tamanho fixo e diferentes números de partições podem ser usados para cada pacote de dados, dependendo do esquema de modulação e codificação usados para o pacote de dados.
BRPI0415840-7A 2003-10-24 2004-10-21 multiplexação por divisão de freqüência de múltiplos fluxos de dados em um sistema de comunicação de multi-portadora sem fio BRPI0415840A (pt)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US51431503P 2003-10-24 2003-10-24
US55974004P 2004-04-05 2004-04-05
US10/932,586 US7221680B2 (en) 2003-09-02 2004-09-01 Multiplexing and transmission of multiple data streams in a wireless multi-carrier communication system
PCT/US2004/035042 WO2005041515A1 (en) 2003-10-24 2004-10-21 Frequency division multiplexing of multiple data streams in a wireless multi-carrier communication system

Publications (1)

Publication Number Publication Date
BRPI0415840A true BRPI0415840A (pt) 2007-01-02

Family

ID=34527959

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0415840-7A BRPI0415840A (pt) 2003-10-24 2004-10-21 multiplexação por divisão de freqüência de múltiplos fluxos de dados em um sistema de comunicação de multi-portadora sem fio

Country Status (7)

Country Link
EP (1) EP1678906A1 (pt)
JP (1) JP2007509586A (pt)
KR (1) KR100944821B1 (pt)
AU (1) AU2004307449C1 (pt)
BR (1) BRPI0415840A (pt)
CA (1) CA2543771C (pt)
WO (1) WO2005041515A1 (pt)

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Also Published As

Publication number Publication date
AU2004307449A1 (en) 2005-05-06
AU2004307449B2 (en) 2008-11-20
JP2007509586A (ja) 2007-04-12
KR100944821B1 (ko) 2010-03-03
CA2543771A1 (en) 2005-05-06
KR20060086439A (ko) 2006-07-31
EP1678906A1 (en) 2006-07-12
WO2005041515A1 (en) 2005-05-06
CA2543771C (en) 2010-04-20
AU2004307449C1 (en) 2009-04-30

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