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1. (WO2007002305) METHOD AND SYSTEM FOR ADAPTING AN EFFECTIVE SPREADING SEQUENCE IN A COMMUNICATION SYSTEM USING DIRECT SEQUENCE SPREADING
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/002305 International Application No.: PCT/US2006/024330
Publication Date: 04.01.2007 International Filing Date: 21.06.2006
IPC:
H04B 1/707 (2006.01) ,H04L 25/02 (2006.01) ,H04J 11/00 (2006.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
B
TRANSMISSION
1
Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
69
Spread spectrum techniques
707
using direct sequence modulation
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
25
Baseband systems
02
Details
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
J
MULTIPLEX COMMUNICATION
11
Orthogonal multiplex systems
Applicants:
QUALCOMM INCORPORATED [US/US]; 5775 Morehouse Drive San Diego, California 92121, US (AllExceptUS)
SCHOTTEN, Hans, Dieter [DE/DE]; DE (UsOnly)
Inventors:
SCHOTTEN, Hans, Dieter; DE
Agent:
WADSWORTH, Philip R. ; 5775 Morehouse Drive San Diego, California 92121, US
Priority Data:
11/158,58921.06.2005US
Title (EN) METHOD AND SYSTEM FOR ADAPTING AN EFFECTIVE SPREADING SEQUENCE IN A COMMUNICATION SYSTEM USING DIRECT SEQUENCE SPREADING
(FR) PROCEDE ET SYSTEME D'ADAPTATION D'UNE SEQUENCE D'ETALEMENT EFFICACE DANS UN SYSTEME DE COMMUNICATION UTILISANT UN ETALEMENT DE SEQUENCE DIRECT
Abstract:
(EN) A method and system for adapting an effective spreading sequence in a wire-line or a wireless communication system using direct sequence spreading system is described. A station of the communication system determines a state of a communication channel, represented by, e.g., an impulse response, a step response, or any other characteristic known to one skilled in the art. The station determines the channel state by measurements of a received signal or by receiving a feedback signal comprising an information enabling the station to determine the plurality of linearly related phases The station then determines a plurality of linearly related phases in accordance with the state of the communication channel, and then applies at least one of the plurality of linearly related phases to at least one sample of the effective spreading sequence.
(FR) Ce procédé et ce système d'adaptation d'une séquence d'étalement efficace dans un système de communication métallique ou sans fil utilise un système d'étalement de séquence direct. Une station du système de communication détermine l'état d'un canal de communication représenté par, notamment, une réponse d'impulsion, une réponse d'étape ou toute autre caractéristique connue par une expert. La station détermine l'état du canal grâce aux mesures d'un signal reçu ou à la réception d'un signal de rétroaction comprenant une information permettant à la station de déterminer la pluralité de phases en rapport linéaire. Elle détermine ensuite une pluralité de phases en rapport linéaire d'après l'état du canal de communication, puis applique au moins une des phases sur au moins un échantillon de la séquence d'étalement efficace.
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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, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, 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, HU, IE, IS, IT, LT, LU, LV, 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: English (EN)
Filing Language: English (EN)
Also published as:
EP1897240JP2008544703CN101243614IN2242/MUMNP/2007