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Machine translation
1. (WO2002033923) PREFILTER DESIGN BY SPECTRAL FACTORIZATION
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2002/033923    International Application No.:    PCT/SE2001/002262
Publication Date: 25.04.2002 International Filing Date: 16.10.2001
Chapter 2 Demand Filed:    07.05.2002    
IPC:
H04L 25/03 (2006.01)
Applicants: TELEFONAKTIEBOLAGET LM ERICSSON (publ) [SE/SE]; S-126 25 Stockholm (SE)
Inventors: LINDBOM, Lars; (SE).
SAHLIN, Henrik; (SE)
Agent: MAGNUSSON, Monica; Ericsson AB Patent Unit Radio Access S-164 80 Stockholm (SE)
Priority Data:
09/688,692 17.10.2000 US
Title (EN) PREFILTER DESIGN BY SPECTRAL FACTORIZATION
(FR) CONCEPTION DE PREFILTRE PAR FACTORISATION SPECTRALE
Abstract: front page image
(EN)A baseband signal processing method for calculating a minimum phase version of a channel estimate using spectral factorization is disclosed. The method provides for a low complexity implementation of prefilters. The prefilter does not color the signal and operates as an allpass filter. Additionally, methods are described for constructing prefilters for equalization in both the forward and backward direction.
(FR)L'invention concerne un procédé de traitement de signaux de bande de base permettant de calculer une version phase minimale d'une évaluation de canal par factorisation spectrale. Ce procédé permet d'installer des préfiltres sans difficulté. Les préfiltres ne colorent pas le signal et fonctionnent comme un filtre passe-tout. L'invention concerne également des procédés de construction de préfiltres pour l'égalisation tant dans le sens passant que dans le sens inverse.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, 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, NO, NZ, PH, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, UZ, VN, YU, ZA, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE, 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)