Pulse or digital communications – Receivers – Particular pulse demodulator or detector
Reexamination Certificate
2007-05-29
2007-05-29
Bocure, Tesfaldet (Department: 2611)
Pulse or digital communications
Receivers
Particular pulse demodulator or detector
C714S795000
Reexamination Certificate
active
11136605
ABSTRACT:
An M-ary-modulation-capable equalizing processing apparatus, received signal processing system, receiver and M-ary-modulation-capable equalizing processing method enabling reduction in processing amount of the equalizing processing while improving bit error rate characteristics. M-ary-modulation-capable equalizing processing apparatus6has phase rotation sections601to604, equalizing processing sections611to614and soft-decision value determining section620. Phase rotation sections601to604rotate phases of signal Sr1to Sr4. The signals Sr1to Sr4are obtained from a received signal Sr that is converted into a digital baseband signal and that has information amounts “3” per symbol, and have an information amount of 1 bit per symbol. Equalizing processing sections611to614perform equalizing the processing on the signals Sr1to Sr4to output soft decision value Spd1to Spd4. Based on the soft decision value Spd1to Spd4, soft-decision value determining section620determines a soft decision value Ssd.
REFERENCES:
patent: 5920599 (1999-07-01), Igarashi
patent: 05335893 (1993-12-01), None
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