GB2312814A - Method and apparatus for the provision and reception of symbols - Google Patents
Method and apparatus for the provision and reception of symbolsInfo
- 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- Withdrawn
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
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.
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100576014B1 (en) * | 2003-05-23 | 2006-05-02 | 삼성전자주식회사 | Apparatus for estimating decision boundary based on the symbol in mobile communication system and method thereof |
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)
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)
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 |
-
1996
- 1996-10-18 WO PCT/US1996/016826 patent/WO1997016910A1/en active Application Filing
- 1996-10-18 BR BR9607557A patent/BR9607557A/en not_active Application Discontinuation
- 1996-10-18 CN CN96191306.1A patent/CN1166900A/en active Pending
- 1996-10-18 GB GB9713516A patent/GB2312814A/en not_active Withdrawn
- 1996-10-22 IL IL11946796A patent/IL119467A0/en unknown
- 1996-10-30 FR FR9613247A patent/FR2740634A1/en active Pending
- 1996-10-31 AR ARP960104989A patent/AR004249A1/en unknown
Patent Citations (4)
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 |
---|---|
WO1997016910A1 (en) | 1997-05-09 |
AR004249A1 (en) | 1998-11-04 |
IL119467A0 (en) | 1997-01-10 |
BR9607557A (en) | 1998-07-07 |
CN1166900A (en) | 1997-12-03 |
MX9704951A (en) | 1997-10-31 |
FR2740634A1 (en) | 1997-04-30 |
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) |