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1. (WO2007096663) OFDEM CHANNEL ESTIMATION SYSTEMS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2007/096663    International Application No.:    PCT/GB2007/050054
Publication Date: 30.08.2007 International Filing Date: 09.02.2007
IPC:
H03H 17/04 (2006.01), H04L 25/02 (2006.01)
Applicants: FRONTIER SILICON LIMITED [GB/GB]; Dales Manor Business Park, Babraham Road, Sawston, Cambridge, Cambridgeshire CB2 4LJ (GB) (For All Designated States Except US).
MCNALLY, Conor [IE/IE]; (IE) (For US Only)
Inventors: MCNALLY, Conor; (IE)
Agent: MARKS & CLERK; 62-68 Hills Road, Cambridge CB2 1LA (GB)
Priority Data:
06075405.8 21.02.2006 EP
60/777,032 27.02.2006 US
Title (EN) OFDEM CHANNEL ESTIMATION SYSTEMS
(FR) SYSTEMES MROF D'ESTIMATION DE CANAL
Abstract: front page image
(EN)A digital filter, the filter comprising: an input to receive complex-valued input samples; an up-sampler coupled to said input to provide an up-sampled output comprising an increased number of said input samples; a filter coupled to said up-sampler to filter said up-sampled output and provide a filtered output; a phase rotation estimator coupled to said input and to said filtered output to estimate a phase rotation of a said input sample by said filter; and a phase compensator coupled to said filtered output and to said phase rotation estimator to compensate said filtered output for said estimated phase rotation.
(FR)L'invention porte sur un filtre numérique qui comprend: une entrée destinée à recevoir des échantillons d'entrée à valeur complexe, un suréchantillonneur couplé à ladite entrée pour fournir un signal de sortie suréchantillonné comprenant un nombre accru desdits échantillons d'entrée; un filtre couplé audit suréchantillonneur pour filtrer ledit signal de sortie suréchantillonné et pour fournir un signal de sortie filtré; un estimateur de transposition de phase couplé à ladite entrée et audit signal de sortie filtré pour estimer une transposition de phase d'un échantillon de signal d'entrée donné par ledit filtre; et un compensateur de phase couplé audit signal de sortie filtré et audit estimateur de transposition de phase pour compenser ledit signal de sortie filtré de ladite transformation de phase estimée.
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, GT, 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, MY, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, 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, 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)