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Adaptive Trellis-Coded 8PSK Using Symbol Transformation  

정지원 (한국해양대학교 전파공학과 위성통신 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.29, no.4C, 2004 , pp. 448-453 More about this Journal
Abstract
Conventional pragmatic TCMs need sector phase quantizer to apply Viterbi decoder which uses 3-bit soft decision. A symbol transformation applied to the incoming I-channel and Q-channel symbols allows to use Viterbi decoder without sector phase quantizer. We analyzed structure and performance of proposed decoder, and applied it to the turbo decoder. We know that the performance of proposed decoder is better than that of conventional decoder by 1 ［㏈］because of increasing of Euclidean distance.
Keywords
PTCM; TC-8PSK; turbo-TCM;
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