VLSI-implementation issues of turbo trellis-coded modulation
نویسندگان
چکیده
Turbo Trellis-Coded Modulation (TTCM) is a very promising approach for future communication systems. It combines the advantages of channel coding with multilevel signals and the powerful Turbo-Codes concept. In this paper we consider VLSI implementation aspects of TTCM. We show that techniques, known from binary Turbo-Decoders, can be applied to TTCM to reduce the implementation complexity significantly. In detail we explore iteration control, quantization, scaling, and the MAP architecture using a bit-true model of an 8-state TTCM decoder.
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