Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2011-05-03
2011-05-03
Tran, Khanh C (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
Reexamination Certificate
active
07936838
ABSTRACT:
It is an object to provide a receiving apparatus which is capable of demodulating signals with a very simple arrangement. Receiving apparatus1has N reception antennas11-1-11-N, and reception antennas11-1-11-N receive signals. Channel coefficient estimator12estimates and outputs channel coefficients from the signals received by respective reception antennas11-1-11-N. QR decomposer13is supplied with a channel matrix having the channel coefficients as its elements, performs QR decomposition on the channel matrix, and outputs a Q matrix and an R matrix. A QHprocessor14is supplied with the Q matrix and the received signals, multiplies the received signals by a complex conjugate transposed matrix of the Q matrix, and outputs converted signal z. A transmitted sequence estimator15is supplied with converted signal z and the R matrix and estimates transmitted sequences.
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Higuchi Kenichi
Ito Takumi
Kakura Yoshikazu
Kawai Hiroyuki
Sawahashi Mamoru
Fujitsu Limited
NEC Corporation
NTT Docomo Inc.
Sughrue & Mion, PLLC
Tran Khanh C
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