Pulse or digital communications – Receivers – Particular pulse demodulator or detector
Reexamination Certificate
2005-10-25
2005-10-25
Patel, Jay K. (Department: 2637)
Pulse or digital communications
Receivers
Particular pulse demodulator or detector
C375S260000, C370S206000, C370S212000
Reexamination Certificate
active
06959052
ABSTRACT:
A channel evaluator acquires a change predicted value from a known symbol, and a compensator compensates for a first symbol using the change predicted value. A demodulator restores a portion corresponding to this symbol with another subcarrier. A replica generator acquires a transmission replica of the restored symbol. The channel evaluator performs complex division on the replica with the symbol to acquire an amplitude phase ratio. A detector compares the amplitude phase ratio with an amplitude phase ratio acquired immediately previously. In case where an elimination condition is satisfied, the detector disregards the amplitude phase ratio acquired currently and uses an immediately previous value instead, an averaging unit averages amplitude phase ratios to acquire a next change predicted value, and the compensator compensates for a next symbol using the change predicted value. Hereinafter, the sequence of processes is repeated.
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Fujise Masayuki
Funada Ryuuhei
Harada Hiroshi
Sasaki Kunihiko
Sawada Manabu
Brook Mitchell P.
Denso Corporation
Ghulamali Qutub
Luce Forward Hamilton & Scripps LLP
National Institute of Information and Communications Technology
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