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Machine translation
1. (WO2002031990) INTERFERENCE MITIGATION IN WIRELESS COMMUNICATIONS BY TRAINING OF INTERFERING SIGNALS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2002/031990    International Application No.:    PCT/US2001/031753
Publication Date: 18.04.2002 International Filing Date: 10.10.2001
IPC:
H04L 27/26 (2006.01)
Applicants: IOSPAN WIRELESS, INC. [US/US]; 3099 North First Street San Jose, CA 95134 (US)
Inventors: TELLADO, Jose; (US)
Agent: ALBOSZTA, Marek; Lumen 45 Cabot Avenue, Suite 110 Santa Clara, CA 95051 (US)
Priority Data:
09/687,965 13.10.2000 US
Title (EN) INTERFERENCE MITIGATION IN WIRELESS COMMUNICATIONS BY TRAINING OF INTERFERING SIGNALS
(FR) REDUCTION DES INTERFERENCES DANS DES SYSTEMES DE COMMUNICATIONS SANS FIL PAR RECONNAISSANCE DE SIGNAUX PARASITES
Abstract: front page image
(EN)A method and wireless communication system for identifying one or more undesired signals at a multiple input receive unit (58)receiving a desired signal (Xd) or several desired signals and the undesired signal or signals (Xu). A separability condition between the desired signal (Xd) and undesired signal (Xu) is provided to enable that the undesired signal can be identified at the multiple input receive unit (58). The separability condition includes the use of substantially coherent reception at the receive unit and the use of separable training patterns for the desired and undesired signals (28 and 32, 36). Zero tones (80) are included in desired and undesired signals to further enhance signal separability. Signal training at the receive unit is used to derive the corresponding channel matrices for the interferers and mitigate their effects.
(FR)L'invention concerne un procédé et un système de communications sans fil permettant d'identifier au moins un signal parasite au niveau d'une unité de réception d'entrées multiples qui reçoit au moins un signal désiré et ledit signal parasite. Il est possible de séparer le signal désiré du signal parasite, ce qui permet d'identifier ledit signal parasite au niveau de l'unité de réception d'entrées multiples. Pour séparer lesdits signaux, on utilise une réception sensiblement cohérente au niveau de l'unité de réception, et des modèles de reconnaissance séparables pour les signaux désiré et parasite. Les signaux désiré et parasite ne comprennent pas de sons ce qui facilite la séparation desdits signaux. On utilise la reconnaissance de signaux au niveau de l'unité de réception pour dériver les matrices de canal correspondantes destinées aux signaux parasites et pour réduire leurs effets.
Designated States: AE, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, 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, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, 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)