Pulse or digital communications – Repeaters – Testing
Patent
1990-10-17
1992-09-22
Safourek, Benedict V.
Pulse or digital communications
Repeaters
Testing
375 12, 375 96, 375101, H03H 730
Patent
active
051503808
ABSTRACT:
In a receiver responsive to a reception signal subjected to an intersymbol interference and a frequency offset, the reception signal is delivered to a matched filter having a filter characteristic matched with a transmission path and filtered into a filter output signal accompanied by the frequency offset. The filter output signal is sent to a frequency offset estimation circuit to produce an estimation signal representative of an estimation value of the frequency offset. An equalizer is supplied with the estimation signal and a selected one of the reception signal and the filter output signal to equalize the frequency offset and the intersymbol interference.
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patent: 4885757 (1989-12-01), Provence
Digital Communications, J. G. Proakis, New York:McGraw-Hill, 1983, Ch 6.
Performance Evaluation of a Mobile Satellite System Modem Using an ALE Method, T. Osawa et al., IMSC 90 Conf.
The Viterbi Algorithm Applied to Digital Data Transmission, J. F. Hayes, IEEE Communication Society, vol. 13, 2.
E. A. Lee et al., Digital Communication, Pub by Kluwer Academic Publishers, 1988.
Ghebretinsae T.
NEC Corporation
Safourek Benedict V.
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