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1. AU2003242452 - Ofdm receiving apparatus and ofdm signal correcting method

Office
Australie
Numéro de la demande 2003242452
Date de la demande 18.06.2003
Numéro de publication 2003242452
Date de publication 11.09.2003
Type de publication A
CIB
H04J 11/00
HÉLECTRICITÉ
04TECHNIQUE DE LA COMMUNICATION ÉLECTRIQUE
JCOMMUNICATION MULTIPLEX
11Systèmes multiplex orthogonaux
H04L 27/26
HÉLECTRICITÉ
04TECHNIQUE DE LA COMMUNICATION ÉLECTRIQUE
LTRANSMISSION D'INFORMATION NUMÉRIQUE, p.ex. COMMUNICATION TÉLÉGRAPHIQUE
27Systèmes à porteuse modulée
26Systèmes utilisant des codes à fréquences multiples
H04L 25/03
HÉLECTRICITÉ
04TECHNIQUE DE LA COMMUNICATION ÉLECTRIQUE
LTRANSMISSION D'INFORMATION NUMÉRIQUE, p.ex. COMMUNICATION TÉLÉGRAPHIQUE
25Systèmes à bande de base
02Détails
03Réseaux de mise en forme pour émetteur ou récepteur, p.ex. réseaux de mise en forme adaptatifs
CPC
H04L 27/2614
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
26Systems using multi-frequency codes
2601Multicarrier modulation systems
2614Peak power aspects
H04L 27/2647
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
26Systems using multi-frequency codes
2601Multicarrier modulation systems
2647Arrangements specific to the receiver only
H04L 2025/03414
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
25Baseband systems
02Details
03Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
03006Arrangements for removing intersymbol interference
0335characterised by the type of transmission
03375Passband transmission
03414Multicarrier
H04L 27/26526
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
26Systems using multi-frequency codes
2601Multicarrier modulation systems
2647Arrangements specific to the receiver only
2649Demodulators
26524Fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators in combination with other circuits for demodulation
26526with inverse FFT [IFFT] or inverse DFT [IDFT] demodulators, e.g. standard single-carrier frequency-division multiple access [SC-FDMA] receiver or DFT spread orthogonal frequency division multiplexing [DFT-SOFDM]
Déposants MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
Inventeurs Ota, Eiji
Uesugi, Mitsuru
Données relatives à la priorité 2002-180204 20.06.2002 JP
2003001438 07.01.2003 JP
Titre
(EN) Ofdm receiving apparatus and ofdm signal correcting method
Abrégé
(EN) A tap selecting part (502) separates sampling signals (r(i,0) through r(i,7)) obtained from a received OFDM signal into sampling signals that are to be corrected and sampling signals that are not to be corrected. Then, the tap selecting part (502) applies the sampling signals that are to be corrected to an FIR filter (503), while applying the sampling signals that are not to be corrected to an FFT 505. The FIR filter (503) receives the sampling signals as variable gains, while receiving a known coefficient of Fourier transform as an input. An adaptive algorithm part (511) causes the values of the sampling signals including distortion components that are the variable gains of the FIR filter (503) to converge onto optimum values such that error values (e(i,k)) due to the distortion are reduced.