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GB2312814A - 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
GB2312814A
GB2312814A GB9713516A GB9713516A GB2312814A GB 2312814 A GB2312814 A GB 2312814A GB 9713516 A GB9713516 A GB 9713516A GB 9713516 A GB9713516 A GB 9713516A GB 2312814 A GB2312814 A GB 2312814A
Authority
GB
United Kingdom
Prior art keywords
symbol
bit
bits
primary
comparing
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
GB9713516A
Other versions
GB9713516D0 (en
Inventor
Gregory C White
Stephen P Emeott
John G Ronk
Patrick J Doran
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Motorola Solutions Inc
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 GB9713516D0 publication Critical patent/GB9713516D0/en
Publication of GB2312814A publication Critical patent/GB2312814A/en
Withdrawn legal-status Critical Current

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)
  • Error Detection And Correction (AREA)
  • Detection And Prevention Of Errors In Transmission (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.
GB9713516A 1995-10-31 1996-10-18 Method and apparatus for the provision and reception of symbols Withdrawn GB2312814A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US55110395A 1995-10-31 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
GB9713516D0 GB9713516D0 (en) 1997-09-03
GB2312814A true GB2312814A (en) 1997-11-05

Family

ID=24199875

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9713516A Withdrawn GB2312814A (en) 1995-10-31 1996-10-18 Method and apparatus for the provision and reception of symbols

Country Status (7)

Country Link
CN (1) CN1166900A (en)
AR (1) AR004249A1 (en)
BR (1) BR9607557A (en)
FR (1) FR2740634A1 (en)
GB (1) GB2312814A (en)
IL (1) IL119467A0 (en)
WO (1) WO1997016910A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100576014B1 (en) * 2003-05-23 2006-05-02 삼성전자주식회사 Apparatus and Method for Estimating Decision Boundary Value in Symbol Unit in Mobile Communication System
CN100596347C (en) * 2008-05-21 2010-03-31 四川虹微技术有限公司 Self-adaption error correction method for digital audio broadcasting receiver

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4489418A (en) * 1983-04-18 1984-12-18 At&T Bell Laboratories Differential encoding technique
US4941154A (en) * 1989-05-30 1990-07-10 At&T Bell Laboratories Trellis coding method and arrangement for fractional bit rates
US5263051A (en) * 1991-07-05 1993-11-16 Codex Corporation Device and method of interleaving for a trellis precoding system
US5524027A (en) * 1994-04-22 1996-06-04 U. S. Philips Corporation Data receiver, method of calculating metrics, and signal processing device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2660131B1 (en) * 1990-03-23 1992-06-19 France Etat DEVICE FOR TRANSMITTING DIGITAL DATA WITH AT LEAST TWO LEVELS OF PROTECTION, AND CORRESPONDING RECEPTION DEVICE.
JPH0626346B2 (en) * 1990-04-26 1994-04-06 郵政省通信総合研究所長 Convolutional coded orthogonal FM / Viterbi reception system
US5651032A (en) * 1993-11-04 1997-07-22 Kabushiki Kaisha Toshiba Apparatus and method for trellis decoder
US5546420A (en) * 1994-04-29 1996-08-13 At&T Corp. Methods of and devices for enhancing communications that use spread spectrum technology by using variable code techniques

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4489418A (en) * 1983-04-18 1984-12-18 At&T Bell Laboratories Differential encoding technique
US4941154A (en) * 1989-05-30 1990-07-10 At&T Bell Laboratories Trellis coding method and arrangement for fractional bit rates
US5263051A (en) * 1991-07-05 1993-11-16 Codex Corporation Device and method of interleaving for a trellis precoding system
US5524027A (en) * 1994-04-22 1996-06-04 U. S. Philips Corporation Data receiver, method of calculating metrics, and signal processing device

Also Published As

Publication number Publication date
FR2740634A1 (en) 1997-04-30
IL119467A0 (en) 1997-01-10
WO1997016910A1 (en) 1997-05-09
BR9607557A (en) 1998-07-07
MX9704951A (en) 1997-10-31
AR004249A1 (en) 1998-11-04
CN1166900A (en) 1997-12-03
GB9713516D0 (en) 1997-09-03

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)