전자공학회논문지A (Journal of the Korean Institute of Telematics and Electronics A)
- 제31A권2호
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- Pages.1-8
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- 1994
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- 1016-135X(pISSN)
디지탈 육상이동통신을 위한 TCM에 관한 연구
A Study on TCM for Digital Land Mobile Communication
초록
In this paper, a model of trellis-coded M-ary PSK (TCM/M-PSK) for digital land mobile communication is realized. Bit error rate(BER) of TCM/M-PSK is calculated theoretically in time selective fading environment due to Doppler spread in the presence of AWGN. cochannel interference. These analyses are employed the receiver with post detection diversity and the direct sequence to improve the BER performance of TCM-MPSK system. It is shown that the CNR required by the diversity reception and the direct sequece(process gain=20dB) TCM-4PSK system is reduced to about 25 dB.
키워드