Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2006-09-26
2006-09-26
Bocure, Tesfaldet (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
C375S299000, C375S347000, C375S296000, C375S219000, C455S101000, C455S137000, C455S073000
Reexamination Certificate
active
07113548
ABSTRACT:
An frequency division multiplexing (OFDM) system transceiver for transmitting frequency dividing data in parallel includes antenna elements for receiving known reception and reception data signals. The fast Fourier transforms (FFTs) transform the known reception signals and the reception data signals to obtain known reception sub-carrier signals and reception data sub-carrier signals. The estimator estimates propagation path estimating values of each of the reception data sub-carrier signals with respect to each of the known reception sub-carrier signals. The weight calculator calculates a maximum ratio composition weight to composite the reception data sub-carrier signals. The setting means sets a transmission weight based on the maximum ratio composition weight. The generator generates a transmission data signal by arranging transmission sub-carrier signals on the frequency axis. The multipliers multiply the transmission data signals by the transmission weight and output the multiplied resultant to the respective antenna elements.
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patent: 6249250 (2001-06-01), Namekata et al.
patent: 6615024 (2003-09-01), Boros et al.
patent: 2005/0020313 (2005-01-01), Chae et al.
patent: A-2000-174536 (2000-06-01), None
patent: A-2000-209017 (2000-07-01), None
Matsugatani Kazuoki
Tanaka Makoto
Bocure Tesfaldet
Denso Corporation
Posz Law Group , PLC
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