Iterative Viterbi Decoding, Trellis shaping and Multilevel Structure for High-Rate Parity-Concatenated TCM
Date
2002
Authors
Wang, Q
Wei, L
Kennedy, Rodney
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Institute of Electrical and Electronics Engineers (IEEE Inc)
Abstract
We define and apply a new algorithm called the iterative Viterbi decoding algorithm (IVA) to decode a high-rate parity-concatenated TCM system in which a trellis code is used as the inner code and a simple parity-check code is used as the outer code. With trellis shaping, the IVA can achieve a performance 1.25 dB away from the Shannon limit at a BER of 3 × 10-5 with low complexity. By augmenting the system with a binary BCH code, the error floor can be reduced to 10-9 with very little additional cost.
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Keywords
Keywords: Iterative Viterbi algorithms (IVA); Bit error rate; Channel capacity; Coding errors; Computer simulation; Decoding; Error analysis; Iterative methods; Signal to noise ratio; Trellis codes; Turbo codes Iterative decoding; Multilevel coding; Serial concatenated coding; Trellis shaping; Trellis-coded modulation; Viterbi algorithm
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Source
IEEE Transactions on Communications
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Journal article
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2037-12-31
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