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1. (WO2005114858) A TRANSMITTER AND RECEIVER FOR ULTRA-WIDEBAND OFDM SIGNALS EMPLOYING A LOW-COMPLEXITY CDMA LAYER FOR BANDWIDTH EXPANSION
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2005/114858    International Application No.:    PCT/IB2005/051658
Publication Date: 01.12.2005 International Filing Date: 20.05.2005
IPC:
H04L 27/26 (2006.01), H04L 5/02 (2006.01)
Applicants: KONINKLIJKE PHILIPS ELECTRONICS, N.V. [NL/NL]; Groenewoudseweg 1, 5621 BA Eindhoven (NL) (AE, AG, AL, AM, AT, AU, AZ, BA, BB, BE, BF, BG, BJ, BR, BW, BY, BZ, CA, CF, CG, CH, CI, CM, CN, CO, CR, CU, CY, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, FR, GA, GB, GD, GE, GH, GM, GN, GQ, GR, GW, HR, HU, ID, IE, IL, IN, IS, IT, JP, KE, KG, KM, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MC, MD, MG, MK, ML, MN, MR, MW, MX, MZ, NA, NE, NG, NI, NL, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SI, SK, SL, SM, SN, SY, SZ, TD, TG, TJ, TM, TN, TR, TT, TZ, UA, UG, UZ, VC, VN, YU, ZA, ZM, ZW only).
U.S. PHILIPS CORPORATION [US/US]; 1251 Avenue of the Americas, New York, NY 10020 (US) (AE only).
RAZZELL, Charles [GB/NL]; (NL) (For US Only)
Inventors: RAZZELL, Charles; (NL)
Priority Data:
60/573,045 21.05.2004 US
60/612,753 24.09.2004 US
Title (EN) A TRANSMITTER AND RECEIVER FOR ULTRA-WIDEBAND OFDM SIGNALS EMPLOYING A LOW-COMPLEXITY CDMA LAYER FOR BANDWIDTH EXPANSION
(FR) TRANSMETTEUR ET RECEVEUR DE SIGNAUX OFDM À BANDE ULTRA LARGE FONCTIONNANT À L’AIDE D’UNE PELLICULE CDMA À FAIBLE COMPLEXITÉ POUR ÉLARGIR LA BANDE PASSANTE
Abstract: front page image
(EN)A method and apparatus for transmitting and receiving high-bandwidth OFDM signals, while limiting the complexity of the OFDM signal processing is described. Bandwidth expansion is achieved by repetition of whole OFDM symbols with the polarity of repetitions determined by a long PN code. This technique ensures a perfectly white spectrum. Use of zero-suffix OFDM symbols allows a large tolerance to multipath channels, even while maintaining a single, low-rate RAKE finger for despreading in the receiver.
(FR)Il s’agit d’une méthode et d’un dispositif de transmission et de réception de signaux OFDM à bande passante large, tout en limitant le niveau de complexité du traitement du signal OFDM. L’élargissement de la bande passante est effectué par répétition de l’ensemble des symboles OFDM, la polarité de ces répétitions étant déterminée par un long code PN. Cette technique garantit un spectre parfaitement blanc. Le recours à des symboles OFDM à suffixe nul permet une tolérance considérable des canaux à trajets multiples, même en maintenant le seul doigt du récepteur à un rythme faible afin de canaliser le receveur.
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, KM, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, 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, 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, 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)