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1. (WO2010075040) POST DECODING SOFT INTERFERENCE CANCELLATION
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2010/075040 International Application No.: PCT/US2009/067910
Publication Date: 01.07.2010 International Filing Date: 14.12.2009
IPC:
H03M 13/29 (2006.01) ,H04L 1/00 (2006.01)
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
M
CODING, DECODING OR CODE CONVERSION, IN GENERAL
13
Coding, 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
29
combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer codes
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1
Arrangements for detecting or preventing errors in the information received
Applicants:
QUALCOMM INCORPORATED [US/US]; ATTN: International IP Administration 5775 Morehouse Drive San Diego, California 92121-1714, US (AllExceptUS)
SAMBHWANI, Sharad D. [US/US]; US (UsOnly)
ZENG, Wei [CN/US]; US (UsOnly)
ZHANG, Wei [CN/US]; US (UsOnly)
WEGRZYN, Jan Krzys [US/US]; US (UsOnly)
IRANINEJAD, Mehraban [US/US]; US (UsOnly)
Inventors:
SAMBHWANI, Sharad D.; US
ZENG, Wei; US
ZHANG, Wei; US
WEGRZYN, Jan Krzys; US
IRANINEJAD, Mehraban; US
Agent:
MOSKOWITZ, Larry, J.; ATTN: International IP Administration 5775 Morehouse Drive San Diego, California 92121-1714, US
Priority Data:
12/487,11718.06.2009US
61/140,06122.12.2008US
61/140,53623.12.2008US
61/145,05415.01.2009US
Title (EN) POST DECODING SOFT INTERFERENCE CANCELLATION
(FR) POST-DÉCODAGE D'UNE ANNULATION DOUCE DES INTERFÉRENCES
Abstract:
(EN) The present patent application discloses a method and apparatus for decoding, comprising decoding signals iteratively, mutually exchanging extrinsic information, calculating APP LLRs for both systematic and parity bits and making a hard decision after a plurality of iterations is completed based on accumulated soft information. The present patent application also discloses a method and apparatus for post decoding soft interference canceling, comprising generating updated a posteriori probabilities for systematic and parity bits from a turbo decoder, mapping the posteriori probabilities to soft symbols, quantizing the soft symbols, re-encoding a data packet, filtering a chip sequence, reconstructing an interference waveform, and scaling reconstruction filter coefficients using the symbols.
(FR) La présente invention concerne un procédé et un dispositif de décodage consistant à décoder des signaux de façon itérative, à échanger mutuellement des informations extrinsèques, à calculer les LLR APP des bits systématiques et des bits de parité et à prendre une décision dure à l'issue d'une pluralité d'itérations en fonction d'informations douces accumulées. La présente demande de brevet décrit également un procédé et un dispositif de post-décodage d'annulation douce des interférences, qui consiste à générer des probabilités a posteriori actualisées pour les bits systématiques et de parité provenant d'un turbo-décodeur, à associer les probabilités a posteriori à des symboles doux, à quantifier les symboles doux, à réencoder un paquet de données, à filtrer une séquence de bribes, à reconstituer une forme d'onde d'interférence, et à mettre à l'échelle des coefficients de filtre de reconstitution au moyen de ces symboles.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP2380283JP2012513724CN102273084KR1020110097986IN4374/CHENP/2011