MXPA05012687A - Comunicacion de emision/multiemision sincronizada. - Google Patents

Comunicacion de emision/multiemision sincronizada.

Info

Publication number
MXPA05012687A
MXPA05012687A MXPA05012687A MXPA05012687A MXPA05012687A MX PA05012687 A MXPA05012687 A MX PA05012687A MX PA05012687 A MXPA05012687 A MX PA05012687A MX PA05012687 A MXPA05012687 A MX PA05012687A MX PA05012687 A MXPA05012687 A MX PA05012687A
Authority
MX
Mexico
Prior art keywords
broadcast
synchronized
synchronized broadcast
same
waveform
Prior art date
Application number
MXPA05012687A
Other languages
English (en)
Inventor
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 MXPA05012687A publication Critical patent/MXPA05012687A/es

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
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/023—Multiplexing of multicarrier modulation signals
    • H04L5/026—Multiplexing of multicarrier modulation signals using code division
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • 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
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/01—Equalisers
    • 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
    • H04L27/2602—Signal structure
    • H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
    • H04L27/2607—Cyclic extensions
    • 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)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Small-Scale Networks (AREA)
  • Radio Relay Systems (AREA)

Abstract

La emision sincronizada transmite un mismo contenido de emision utilizando una misma forma de onda proveniente de multiples transmisores, cada uno de los transmisores aplica un mismo codigo de dispersion para las transmisiones emitidas. En un sistema de comunicaciones de espectro disperso que tiene un enlace en avance multiplexado por division de tiempo, se inserta una transmision de emision sincronizada en un intervalo de emision. Una modalidad emplea una forma de onda de Multiplexion Divisional de Frecuencia Ortogonal (OFDM) para la transmision sincronizada. Despues se utiliza un receptor de OFDM para procesar la transmision de emision sincronizada recibida. Una modalidad alterna implementa un codigo de Ruido Pseudo-aleatorio (PN) de transmision para su uso por multiples transmisores. Despues se emplea un ecualizador para calcular la transmision de emision sincronizada.
MXPA05012687A 2004-01-20 2005-01-20 Comunicacion de emision/multiemision sincronizada. MXPA05012687A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US53795504P 2004-01-20 2004-01-20
PCT/US2005/001591 WO2005071867A2 (en) 2004-01-20 2005-01-20 Synchronized broadcast/multicast communication

Publications (1)

Publication Number Publication Date
MXPA05012687A true MXPA05012687A (es) 2006-02-22

Family

ID=34807148

Family Applications (1)

Application Number Title Priority Date Filing Date
MXPA05012687A MXPA05012687A (es) 2004-01-20 2005-01-20 Comunicacion de emision/multiemision sincronizada.

Country Status (26)

Country Link
US (4) US8363697B2 (es)
JP (4) JP4777907B2 (es)
KR (3) KR101129205B1 (es)
CN (4) CN102300162B (es)
AU (2) AU2005207338B2 (es)
BG (1) BG109346A (es)
BR (1) BRPI0504407A (es)
CA (1) CA2525239C (es)
CZ (1) CZ2005704A3 (es)
DE (1) DE602005022263D1 (es)
DK (1) DK1658688T3 (es)
EC (1) ECSP056176A (es)
ES (2) ES2348415T3 (es)
HU (1) HUE026306T2 (es)
IL (2) IL171796A (es)
MX (1) MXPA05012687A (es)
NO (1) NO20055252L (es)
NZ (3) NZ571456A (es)
PL (1) PL380449A1 (es)
PT (2) PT1658688E (es)
RU (1) RU2379840C2 (es)
TR (1) TR200504827T2 (es)
TW (2) TWI367640B (es)
UA (1) UA95437C2 (es)
WO (1) WO2005071867A2 (es)
ZA (1) ZA200509101B (es)

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