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1. (WO2010085313) METHOD AND SYSTEM OF DIFFERENTIAL COMPLEX AND REAL MULTI-CARRIER DEMODULATION
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2010/085313 International Application No.: PCT/US2009/069653
Publication Date: 29.07.2010 International Filing Date: 29.12.2009
IPC:
H03D 3/00 (2006.01)
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
D
DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
3
Demodulation of angle-modulated oscillations
Applicants:
NTT DOCOMO INC. [JP/JP]; Sanno Park Tower 11-1, Nagata-cho, 2-chome Chiyoda-Ku, Tokyo 100-6150, JP (AllExceptUS)
XU, Huilin [CN/US]; US (UsOnly)
CHONG, Chia-Chin [MY/US]; US (UsOnly)
WATANABE, Fujio [JP/US]; US (UsOnly)
Inventors:
XU, Huilin; US
CHONG, Chia-Chin; US
WATANABE, Fujio; US
Agent:
KWOK, Edward C.; Haynes and Boone, LLP 2323 Victory Avenue Suite 700 Dallas, TX 75219, US
Priority Data:
12/579,14214.10.2009US
61/146,25421.01.2009US
Title (EN) METHOD AND SYSTEM OF DIFFERENTIAL COMPLEX AND REAL MULTI-CARRIER DEMODULATION
(FR) PROCÉDÉ ET SYSTÈME DE DÉMODULATION MULTIPORTEUSE COMPLEXE ET RÉELLE DIFFÉRENTIELLE
Abstract:
(EN) A method and a receiver are provided for demodulating a received multi-carrier modulated signal. The demodulation procedure includes (a) multiplying the received multi-carrier modulated signal with its complex conjugate to obtain a squared signal; (b) multiplying the squared signal with a signal having a frequency (1) to obtain a product signal, where T represents a duration of a symbol in the received multi-carrier modulated signal; and integrating the product signal over the duration T. The signal having a frequency (1) may be a complex signal having the form exp(2) or exp(3), or a cosinusoidal signal having the form cos(2), according to whether the multi-carrier modulated signal is a complex signal or a real signal.
(FR) L'invention porte sur un procédé et un récepteur pour démoduler un signal modulé multiporteuse reçu. La procédure de démodulation comprend (a) la multiplication du signal modulé multiporteuse reçu par son conjugué complexe afin d'obtenir un signal élevé au carré; (b) la multiplication du signal élevé au carré par un signal ayant une fréquence (1) afin d'obtenir un signal produit, T représentant une durée d'un symbole dans le signal modulé multiporteuse reçu; et l'intégration du signal produit sur la durée T. Le signal ayant une fréquence (1) peut être un signal complexe ayant la forme exp(2) ou exp(3), ou un signal cosinusoïdal ayant la forme cos(2), selon si le signal modulé multiporteuse est un signal complexe ou un signal réel.
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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, TH, 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)