BR0212206A - Sistema e processo de radiotransmissão, e aparelho transmissor e aparelho receptor usados no sistema de radiotransmissão - Google Patents

Sistema e processo de radiotransmissão, e aparelho transmissor e aparelho receptor usados no sistema de radiotransmissão

Info

Publication number
BR0212206A
BR0212206A BR0212206A BR0212206A BR0212206A BR 0212206 A BR0212206 A BR 0212206A BR 0212206 A BR0212206 A BR 0212206A BR 0212206 A BR0212206 A BR 0212206A BR 0212206 A BR0212206 A BR 0212206A
Authority
BR
Brazil
Prior art keywords
radio transmission
transmission system
information
transmitter
parallel
Prior art date
Application number
BR0212206A
Other languages
English (en)
Inventor
Mamoru Sawahashi
Hiroyuki Atarashi
Sadayuki Abeta
Noriyuki Maeda
Original Assignee
Ntt Docomo 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 Ntt Docomo Inc filed Critical Ntt Docomo Inc
Publication of BR0212206A publication Critical patent/BR0212206A/pt

Links

Classifications

    • 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
    • H04B1/69—Spread spectrum techniques
    • H04B1/692—Hybrid techniques using combinations of two or more spread spectrum techniques
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • 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
    • H04L5/0014—Three-dimensional division
    • H04L5/0016—Time-frequency-code
    • H04L5/0021—Time-frequency-code in which codes are applied as a frequency-domain sequences, e.g. MC-CDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70703—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation using multiple or variable rates
    • H04B2201/70705—Rate detection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0023—Interference mitigation or co-ordination
    • H04J11/005—Interference mitigation or co-ordination of intercell interference
    • 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
    • H04L25/0216—Channel estimation of impulse response with estimation of channel length
    • 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
    • H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
    • 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)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

"SISTEMA E PROCESSO DE RADIOTRANSMISSãO, E APARELHO TRANSMISSOR E APARELHO RECEPTOR USADOS NO SISTEMA DE RADIOTRANSMISSãO". A presente invenção refere-se a um sistema de radiotransmissão que é configurado, na ocasião da radiotransmissão da informação entre um transmissor e um receptor, para executar a radiotransmissão da informação que usa um esquema de transmissão de operação multiplex por divisão de código e freq³ência ortogonal de paralelamente transmitir a informação idêntica por uma pluralidade de subportadoras. O sistema de radiotransmissão apresenta um dispositivo de transmissão de controle variável de fator de dispersão para paralelamente converter a informação codificada por canal no transmissor, de acordo com os símbolos simultaneamente transmitidos, e para dispersar uma seq³ência de símbolos paralelizados em pelo menos uma direção, a direção de freq³ência ou a direção de tempo, por uma seq³ência de código de dispersão de um fator de dispersão designado.
BR0212206A 2001-08-30 2002-08-30 Sistema e processo de radiotransmissão, e aparelho transmissor e aparelho receptor usados no sistema de radiotransmissão BR0212206A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001262215 2001-08-30
PCT/JP2002/008842 WO2003019837A1 (en) 2001-08-30 2002-08-30 Radio transmission system and method and transmission station apparatus and reception station apparatus used in the radio transmission system

Publications (1)

Publication Number Publication Date
BR0212206A true BR0212206A (pt) 2004-09-21

Family

ID=19089142

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0212206A BR0212206A (pt) 2001-08-30 2002-08-30 Sistema e processo de radiotransmissão, e aparelho transmissor e aparelho receptor usados no sistema de radiotransmissão

Country Status (16)

Country Link
US (1) US7324434B2 (pt)
EP (1) EP1422853A4 (pt)
JP (2) JP3924565B2 (pt)
KR (1) KR100634041B1 (pt)
CN (2) CN101729232B (pt)
AU (1) AU2002330470B2 (pt)
BR (1) BR0212206A (pt)
CA (1) CA2459129C (pt)
HU (1) HUP0401806A2 (pt)
IL (2) IL160617A0 (pt)
MY (1) MY172741A (pt)
NO (1) NO20040839L (pt)
NZ (1) NZ531435A (pt)
PL (1) PL367975A1 (pt)
TW (1) TWI248317B (pt)
WO (1) WO2003019837A1 (pt)

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Also Published As

Publication number Publication date
JP3924565B2 (ja) 2007-06-06
EP1422853A1 (en) 2004-05-26
CN101729232B (zh) 2013-07-03
TWI248317B (en) 2006-01-21
WO2003019837A1 (en) 2003-03-06
JP4995253B2 (ja) 2012-08-08
KR100634041B1 (ko) 2006-10-17
CN100568789C (zh) 2009-12-09
JP2010035232A (ja) 2010-02-12
CN1561592A (zh) 2005-01-05
AU2002330470B2 (en) 2006-12-14
US7324434B2 (en) 2008-01-29
CA2459129A1 (en) 2003-03-06
JPWO2003019837A1 (ja) 2005-12-08
PL367975A1 (en) 2005-03-21
US20030053413A1 (en) 2003-03-20
EP1422853A4 (en) 2009-09-30
MY172741A (en) 2019-12-11
KR20040032987A (ko) 2004-04-17
CA2459129C (en) 2009-09-29
NZ531435A (en) 2005-04-29
IL160617A (en) 2009-06-15
IL160617A0 (en) 2004-07-25
NO20040839L (no) 2004-06-01
CN101729232A (zh) 2010-06-09
HUP0401806A2 (en) 2004-11-29

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