Pulse or digital communications – Receivers – Particular pulse demodulator or detector
Patent
1993-10-06
1996-04-02
Tse, Young T.
Pulse or digital communications
Receivers
Particular pulse demodulator or detector
375323, H04L 2706
Patent
active
055047840
ABSTRACT:
A method of decoding (311 and 417) by Viterbi algorithm is applied with a metric that limits effects on the metric's value. A received signal (109) comprised of symbols is filtered, thereby providing (303 and 403) a phase angle of the received signal (109) and providing (305 and 409) a magnitude of the received signal (109). The phase angle of the received signal (109) and the magnitude of the received signal (109) are sampled (309 and 413) once per symbol and then decoded according to the Viterbi algorithm with a metric that limits effects on the metric's value as the difference between the sampled phase angle and the decoded symbol increases.
REFERENCES:
patent: 4477916 (1984-10-01), Chung
patent: 5134635 (1992-07-01), Hong et al.
patent: 5289504 (1994-02-01), Wilson et al.
patent: 5315620 (1994-05-01), Halawani et al.
Niyogi Sourabh
Wilson Alan L.
Lukasik Susan L.
Tse Young T.
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