MX9703832A - Sistema y metodo para transmision inalambrica de datos digitales utilizando palabras piloto diferencialmente codificadas. - Google Patents

Sistema y metodo para transmision inalambrica de datos digitales utilizando palabras piloto diferencialmente codificadas.

Info

Publication number
MX9703832A
MX9703832A MX9703832A MX9703832A MX9703832A MX 9703832 A MX9703832 A MX 9703832A MX 9703832 A MX9703832 A MX 9703832A MX 9703832 A MX9703832 A MX 9703832A MX 9703832 A MX9703832 A MX 9703832A
Authority
MX
Mexico
Prior art keywords
differentially encoded
encoded pilot
words
digital data
receiver
Prior art date
Application number
MX9703832A
Other languages
English (en)
Inventor
Andrew S Wright
Original Assignee
At & T Wireless Services 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 At & T Wireless Services Inc filed Critical At & T Wireless Services Inc
Publication of MX9703832A publication Critical patent/MX9703832A/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/345—Modifications of the signal space to allow the transmission of additional information
    • H04L27/3455—Modifications of the signal space to allow the transmission of additional information in order to facilitate carrier recovery at the receiver end, e.g. by transmitting a pilot or by using additional signal points to allow the detection of rotations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0602—Systems characterised by the synchronising information used
    • H04J3/0605—Special codes used as synchronising signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Un sistema y método para transmitir datos digitales sobre un canal inalámbrico utiliza palabras piloto diferencialmente codificadas, periodicamente transmitidas, para permitir que un receptor se sincronice rápidamente con un transmisor. Cada palabra piloto diferencialmente codificada comprende por lo menos dos símbolos piloto que son separados por una diferencia fija. El receptor verifica las diferencias entre los símbolos para localizar las palabras piloto diferencialmente codificadas, y sincronizarse así con el transmisor. Una vez que el receptor se sincroniza con el transmisor, el receptor utiliza los símbolos piloto de las palabras piloto diferencialmente codificadas para realizar la valoracion y compensacion del canal.
MX9703832A 1994-11-23 1995-11-22 Sistema y metodo para transmision inalambrica de datos digitales utilizando palabras piloto diferencialmente codificadas. MX9703832A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/344,238 US5809083A (en) 1994-11-23 1994-11-23 Differentially encoded pilot word system and method for wireless transmissions of digital data
PCT/US1995/015386 WO1996016492A1 (en) 1994-11-23 1995-11-22 System and method for wireless transmission of digital data using differentially encoded pilot words

Publications (1)

Publication Number Publication Date
MX9703832A true MX9703832A (es) 1997-12-31

Family

ID=23349633

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9703832A MX9703832A (es) 1994-11-23 1995-11-22 Sistema y metodo para transmision inalambrica de datos digitales utilizando palabras piloto diferencialmente codificadas.

Country Status (5)

Country Link
US (1) US5809083A (es)
AU (1) AU4246496A (es)
BR (1) BR9509910A (es)
MX (1) MX9703832A (es)
WO (1) WO1996016492A1 (es)

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Also Published As

Publication number Publication date
US5809083A (en) 1998-09-15
BR9509910A (pt) 1997-10-14
WO1996016492A1 (en) 1996-05-30
AU4246496A (en) 1996-06-17

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