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This paper presents a turbo trellis coded modulation (TTCM) scheme for which the encoding is implemented by serially concatenating a demultiplexer, a multilevel delay processor, and a signal mapper to the encoder of a binary turbo code. Through the delay processor and the signal mapper, interblock memory is introduced between consecutive binary turbo codewords. The proposed TTCM can be decoded based...
We investigate a binary code, which is implemented by serially concatenating a multiplexer, a multilevel delay processor, and a signal mapper to a binary turbo encoder. To achieve improved convergence behavior, we modify the binary code by passing only a fraction of the bits in the turbo code through the multilevel delay processor and the signal mapper. Two decoding methods are discussed and their...
In this paper, we investigate detection-decoding algorithms for the near-capacity performances of turbo coded MIMO (multiple-input multiple-output) schemes in the fast fading channel. Both the conventional turbo coded MIMO scheme Gamma0 and turbo coded MIMO scheme with interblock memory which is denoted by Gamma are investigated. Gamma is implemented by introducing some delay elements between the...
We investigate the performance of binary codes T constructed from turbo coding with interblock memory. The encoding of T is implemented by serially concatenating a multiplexer, a multilevel delay processor, and a signal mapper to the encoder of a conventional binary turbo code C. With such a construction, in T, there is some irregularity for the code bits in C. To provide more variety of irregularity,...
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