MX9708913A - Sistema de comunicacion de acceso multiple de division de frecuencia y codigo doblemente ortogonal. - Google Patents

Sistema de comunicacion de acceso multiple de division de frecuencia y codigo doblemente ortogonal.

Info

Publication number
MX9708913A
MX9708913A MX9708913A MX9708913A MX9708913A MX 9708913 A MX9708913 A MX 9708913A MX 9708913 A MX9708913 A MX 9708913A MX 9708913 A MX9708913 A MX 9708913A MX 9708913 A MX9708913 A MX 9708913A
Authority
MX
Mexico
Prior art keywords
communication system
division multiple
multiple access
orthogonal code
frequency division
Prior art date
Application number
MX9708913A
Other languages
English (en)
Other versions
MXPA97008913A (es
Inventor
Francia D Natali
Original Assignee
Stanford Telecomunications 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 Stanford Telecomunications Inc filed Critical Stanford Telecomunications Inc
Publication of MX9708913A publication Critical patent/MX9708913A/es
Publication of MXPA97008913A publication Critical patent/MXPA97008913A/es

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
    • H04L27/30—Systems using multi-frequency codes wherein each code element is represented by a combination of frequencies
    • 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
    • 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
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/204—Multiple access
    • H04B7/216—Code division or spread-spectrum multiple access [CDMA, SSMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2628—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA]
    • H04B7/2634—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA] for channel frequency control
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Relay Systems (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Selective Calling Equipment (AREA)
  • Transmitters (AREA)

Abstract

La presente invencion se refiere a un sistema de comunicacion de radio de acceso multiple por division de codigo ortogonal (BPSK) que tiene al menos una estacion base y una pluralidad de terminales de abonado/usuario, para comunicar datos, medios transmisores que incluyen: medios moduladores MPSK conectados para recibir los datos, medios de modulador bifásicos (BPSK) conectados al modulador MPSK, un generador de un conjunto de funciones RW que tiene medios para seleccionar un conjunto de funciones RW dadas, cada funcion RW tiene una velocidad de corte RW predeterminada, un sintetizador de frecuencia portadora, conectado al modulador MPSK que genera frecuencias portadoras seleccionadas, las cuales están separadas por la velocidad de corte RW, un generador de codigo PN para proporcionar una señal de codigo PN seleccionada, medios para sumar un conjunto de señales de funciones RW dadas seleccionadas con la señal de codigo PN y proporcionar una señal de funcion de dispersion a los medios moduladores bifásicos, los medios modulares bifásicos producen una señal compuesta que sale de los medios moduladores MPSK y la señal de la funcion de dispersion, el conjunto de funciones RW seleccionado es un miembro de secuencias binarias fijas, las cuales son ortogonales sobre un periodo de símbolos, y medios para convertir ascendetemente la señal compuesta del modulador bifásico a una banda de frecuencia de emision para la transmision.
MXPA/A/1997/008913A 1995-05-19 1996-05-17 Sistema de comunicacion de acceso multiple condivision de frecuencia y codigo doblementeortogonal MXPA97008913A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08444749 1995-05-19
US08/444,749 US5623487A (en) 1995-05-19 1995-05-19 Doubly orthogonal code and frequency division multiple access communication system

Publications (2)

Publication Number Publication Date
MX9708913A true MX9708913A (es) 1998-06-30
MXPA97008913A MXPA97008913A (es) 1998-10-30

Family

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Also Published As

Publication number Publication date
EP0829155A4 (en) 2003-01-22
CA2221101A1 (en) 1996-11-21
KR100426543B1 (ko) 2004-06-16
EP0829155B1 (en) 2004-07-21
US5623487A (en) 1997-04-22
DE69632954T2 (de) 2005-07-28
JP2003505005A (ja) 2003-02-04
DE69632954D1 (de) 2004-08-26
WO1996037066A1 (en) 1996-11-21
AU710269B2 (en) 1999-09-16
AU5920496A (en) 1996-11-29
KR19990014914A (ko) 1999-02-25
EP0829155A1 (en) 1998-03-18
BR9608879A (pt) 1999-07-06
ATE271739T1 (de) 2004-08-15

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