Method and apparatus for providing carrier frequency offset comp

Details Method and apparatus for providing carrier frequency offset comp Method and apparatus for providing carrier frequency offset comp

1991-05-31

1993-09-14

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

375 15, 375114, H04J 306

Patent

active

052456110

ABSTRACT:
The present invention relates to a method and apparatus for providing carrier frequency offset compensation in a time division multiple access (TDMA) communication system. In this effort a TDMA receiver is adapted to receive, via a transmission channel, a transmitted signal burst which includes a synchronization signal pattern, a message signal portion and at least one known portion, in a TDMA time slot. Initially, a phase error at that portion of the received signal which corresponds to the known portion of the transmitted signal is determined. Thereafter, various received signal parameters are adjusted in order to eliminate the phase error and thereby compensate for any carrier frequency offsets.

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patent: 4324001 (1982-04-01), Rhodes
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patent: 5007068 (1991-04-01), Simon et al.
patent: 5097220 (1992-03-01), Shimakata et al.
"An MLSE Receiver with Carrier Frequency Estimater for TDMA Digital Mobile Radio" by Kazuhiro Okanoue, Yosihnori Nagata and Yukitsuna Furuya, Proceedings of the fourth Nordic Conference on Digital Mobile Radio Communication, Oslow Norway, Jun. 26-28, 1990, pp. 1-9.
"An Adaptive MLSE Receiver for TDMA Digital Mode Radio", by Renato D'Avela, Luigi Moreno and Marcello Sant'Agostino, IEEE Journal on Selected Area in Communications, vol. 7, No. 1, Jan. 1989, pp. 122-129.
Gottfried Ungerboeck, "Adaptive Maximum-Likelihood Receiver for Carrier-Modulated Data-Transmission Systems," IEEE Transactions on Communications vol. COM-22 (1974): 624-636.

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