MX9704951A - Method and apparatus for the provision and reception of symbols. - Google Patents

Method and apparatus for the provision and reception of symbols.

Info

Publication number
MX9704951A
MX9704951A MX9704951A MX9704951A MX9704951A MX 9704951 A MX9704951 A MX 9704951A MX 9704951 A MX9704951 A MX 9704951A MX 9704951 A MX9704951 A MX 9704951A MX 9704951 A MX9704951 A MX 9704951A
Authority
MX
Mexico
Prior art keywords
symbol
bit
bits
primary
comparing
Prior art date
Application number
MX9704951A
Other languages
Spanish (es)
Other versions
MXPA97004951A (en
Inventor
Gregory C White
Stephen P Emeott
John G Ronk
Patrick J Doran
Original Assignee
Motorola 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 Motorola Inc filed Critical Motorola Inc
Publication of MX9704951A publication Critical patent/MX9704951A/en
Publication of MXPA97004951A publication Critical patent/MXPA97004951A/en

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
    • H04L27/3405—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power
    • H04L27/3416—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power in which the information is carried by both the individual signal points and the subset to which the individual points belong, e.g. using coset coding, lattice coding, or related schemes
    • H04L27/3427—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power in which the information is carried by both the individual signal points and the subset to which the individual points belong, e.g. using coset coding, lattice coding, or related schemes in which the constellation is the n - fold Cartesian product of a single underlying two-dimensional constellation
    • H04L27/3433—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power in which the information is carried by both the individual signal points and the subset to which the individual points belong, e.g. using coset coding, lattice coding, or related schemes in which the constellation is the n - fold Cartesian product of a single underlying two-dimensional constellation using an underlying square constellation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Error Detection And Correction (AREA)

Abstract

A symbol constellation is logically divided into a plurality of multi-symbol subsets (201-204). Additionally, a series of primary bits and a series of secondary bits are provided. At least a first selected primary bit is error control encoded (303) to provide an M bit pre-symbol (603) that uniquely corresponds to a multi-symbol subset (602). The M bit pre-symbol is modulated (304) by at least a first selected secondary bit to provide an N bit symbol (605) that uniquely corresponds to a symbol included in the multi-symbol subset. Recovered primary bits are determined by comparing a received symbol (609) with only one symbol in each of the multi-symbol subsets. Additionally, recovered secondary bits are determined by comparing the received symbol with predetermined decision boundaries (622). In this manner, varying degrees of error protection are provided allowing for a wider variety of coding rates.
MXPA/A/1997/004951A 1995-10-31 1997-06-30 Method and apparatus for the supply and reception of simbo MXPA97004951A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US55110395A 1995-10-31 1995-10-31
US551103 1995-10-31
PCT/US1996/016826 WO1997016910A1 (en) 1995-10-31 1996-10-18 Method and apparatus for the provision and reception of symbols

Publications (2)

Publication Number Publication Date
MX9704951A true MX9704951A (en) 1997-10-31
MXPA97004951A MXPA97004951A (en) 1998-07-03

Family

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Also Published As

Publication number Publication date
GB9713516D0 (en) 1997-09-03
AR004249A1 (en) 1998-11-04
GB2312814A (en) 1997-11-05
FR2740634A1 (en) 1997-04-30
CN1166900A (en) 1997-12-03
IL119467A0 (en) 1997-01-10
BR9607557A (en) 1998-07-07
WO1997016910A1 (en) 1997-05-09

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MXPA97004951A (en) Method and apparatus for the supply and reception of simbo