Signal demodulating and decoding apparatus and signal demodulati

Details Signal demodulating and decoding apparatus and signal demodulati Signal demodulating and decoding apparatus and signal demodulati

1994-03-18

1996-09-17

Chin, Stephen

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

375232, 375233, 375322, 375327, 375328, 375330, 375347, 455337, H03H 730, H03D 300, H03D 318, H04B 710

Patent

active

055576443

ABSTRACT:
In a signal demodulating and decoding apparatus, plural demodulators and decoders corresponding to plural modulation systems are provided respectively, and these are operated at the same time, and respective decoding results are outputted. Further, the signal demodulating and decoding apparatus evaluates decision error amounts of respective demodulators and selects the decoding data by the demodulator and the decoder having the least decision error amount. When an operation device for adaptively correcting the parameters used within the demodulator is provided so that decision errors on inputting the decision results of the demodulator into the decoder are made small, the decision error amount inputted to the operation device is selected in a manner similar to that above.

REFERENCES:
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patent: 5173925 (1992-12-01), Mizoguchi
patent: 5202643 (1993-04-01), Sato
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patent: 5315617 (1994-05-01), Guida
patent: 5335251 (1994-08-01), Onishi
patent: 5376894 (1994-12-01), Petranovich
Jacobsmeyer, Jay M. "An Adaptive Modulation Scheme for Bandwidth-Limited Meteor-Burst Channels," IEEE Military Communications Conference--MILCOM '88, Oct. 23-26, 1988, vol. 3, pp. 933,937. (English).

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