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1. WO2001043289 - METHOD AND APPARATUS PROVIDING BIT-TO-SYMBOL MAPPING FOR SPACE-TIME CODES

Publication Number WO/2001/043289
Publication Date 14.06.2001
International Application No. PCT/IB2000/001795
International Filing Date 01.12.2000
Chapter 2 Demand Filed 10.07.2001
IPC
H03M 13/25 2006.1
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
MCODING, DECODING OR CODE CONVERSION, IN GENERAL
13Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
25Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation
H04L 1/06 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
02by diversity reception
06using space diversity
CPC
H04L 1/0618
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
02by diversity reception
06using space diversity
0618Space-time coding
Applicants
  • NOKIA CORPORATION [FI]/[FI] (AE, AG, AL, AM, AT, AU, AZ, BA, BE, BF, BG, BJ, BR, BY, BZ, CA, CF, CG, CH, CI, CM, CN, CR, CU, CY, CZ, DE, DK, DM, DZ, EE, ES, FI, FR, GA, GB, GD, GE, GH, GM, GN, GR, GW, HR, HU, ID, IE, IL, IN, IS, IT, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MC, MD, MG, MK, ML, MN, MR, MW, MX, MZ, NE, NL, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, SN, SZ, TD, TG, TJ, TM, TR, TT, TZ, UA, UG, UZ, VN, YU, ZA, ZW)
  • NOKIA INC. [US]/[US] (BB)
Inventors
  • HEIKKILA, Markku, J.
  • LILLEBERG, Jorma
Agents
  • SMITH, Harry, F.
  • SLINGSBY; Philip Roy
Priority Data
09/458,32310.12.1999US
09/710,93613.11.2000US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND APPARATUS PROVIDING BIT-TO-SYMBOL MAPPING FOR SPACE-TIME CODES
(FR) PROCEDE ET APPAREIL PERMETTANT D'ASSURER UN MAPPAGE DE BIT-SYMBOLE POUR CODES SPATIO-TEMPORELS
Abstract
(EN) A method for optimizing a bit-to-symbol mapping operation. The method has steps of (a) determining a most probable symbol selection error made during a space-time decoding operation; and (b) selecting a bits-to-symbol mapper such that a bit-to-symbol mapping step results in a most probable symbol selection error, made during a space-time decoding operation, causes a minimal number of bit errors. The bits-to-symbol mapping step can be carried out so as to minimize an average number of bit errors resulting from an occurrence of the most probable symbol selection error, as well as from an occurrence of at least a second most probable symbol selection error, during the space-time decoding operation. A space-time coded communications system that operates in accordance with the method is also disclosed.
(FR) Cette invention a trait à l'optimisation d'un mappage de bit-symbole. Le procédé consiste, (a), déterminer l'erreur de sélection de symbole la plus probable survenant lors d'un décodage spatio-temporel et, (b) à sélectionner un mappeur bits-symbole de manière que le mappage de bit-symbole débouchant sur une erreur de sélection de symbole la plus probable lors d'un décodage spatio-temporel, n'entraîne qu'un nombre minimal d'erreurs de bits. Il est possible de procéder à ce mappage de bits-symbole de façon à réduire un nombre moyen d'erreurs de bits résultant de la survenue de l'erreur de sélection de symbole la plus probable ainsi que de la survenue d'au moins une seconde erreur de sélection de symbole la plus probable lors du décodage spatio-temporel. L'invention porte également sur un système de communications codées au plan spatio-temporel fonctionnant conformément à ce procédé.
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