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Machine translation
1. (WO2004098140) METHOD OF DEMODULATING OFDM-TYPE SIGNALS IN THE PRESENCE OF STRONG CO-CHANNEL INTERFERENCE SIGNALS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2004/098140    International Application No.:    PCT/EP2004/050558
Publication Date: 11.11.2004 International Filing Date: 16.04.2004
IPC:
H04L 27/26 (2006.01)
Applicants: THALES [FR/FR]; 45, rue de Villiers, F-92200 Neuilly Sur Seine (FR) (For All Designated States Except US).
TELEDIFFUSION DE FRANCE S.A. [FR/FR]; 10, rue d'Oradour sur Glane, F-75015 Paris (FR) (For All Designated States Except US).
MASSE, Denis [FR/FR]; (FR) (For US Only).
PIPON, François [FR/FR]; (FR) (For US Only).
MHIRI, Rym [FR/FR]; (FR) (For US Only)
Inventors: MASSE, Denis; (FR).
PIPON, François; (FR).
MHIRI, Rym; (FR)
Agent: DUDOUIT, Isabelle; Thales, Intellectual Property, 31-33, avenue Aristide Briand, F-94117 Arcueil (FR)
Priority Data:
03 05124 25.04.2003 FR
Title (EN) METHOD OF DEMODULATING OFDM-TYPE SIGNALS IN THE PRESENCE OF STRONG CO-CHANNEL INTERFERENCE SIGNALS
(FR) PROCEDE DE DEMODULATION DE SIGNAUX DE TYPE OFDM EN PRESENCE DE SIGNAUX BROUILLEURS CO-CANAUX FORTS
Abstract: front page image
(EN)The invention relates to a method of demodulating a signal in a transmission system in which the modulation comprises several essentially orthogonal subcarriers, the vector of the propagation channel H[n,k] being known or the received signal comprising at least pilot symbols that transmit reference data. The inventive method comprises at least one step consisting in estimating symbol a[n,k] emitted over the kth subcarrier of the nth symbol of the modulation by means of a recombination that weights the different signals received after synchronisation and demodulation x[n,k]. The invention can be used for the demodulation of TPS bits of a DVB-T signal.
(FR)Procédé de démodulation d'un signal dans un système de transmission où la modulation comporte plusieurs sous-porteuses sensiblement orthogonales, le vecteur du canal de propagation H[n,k] étant connu, ou le signal reçu comportant au moins des symboles pilotes transmettant des données de référence. Il comporte au moins une étape d'estimation du symbole a[n,k] émis sur la kième sous -porteuse du nième symbole de la modulation à l'aide d'une recombinaison pondérant les différents signaux reçus après synchronisation et démodulation x[n,k]. Application à la démodulation de bits TPS d'un signal DVB-T.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, 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, HU, IE, IT, LU, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: French (FR)
Filing Language: French (FR)