Iterative Viterbi decoding, trellis shaping, and multilevel structure for high-rate parity-concatenated TCM

Qi Wang; Lei Wei; Rodney A. Kennedy

doi:10.1109/26.975743

Iterative Viterbi decoding, trellis shaping, and multilevel structure for high-rate parity-concatenated TCM

Qi Wang^*
, Lei Wei
, Rodney A. Kennedy

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

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.

Original language	English
Pages (from-to)	48-55
Number of pages	8
Journal	IEEE Transactions on Communications
Volume	50
Issue number	1
DOIs	https://doi.org/10.1109/26.975743
Publication status	Published - Jan 2002

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title = "Iterative Viterbi decoding, trellis shaping, and multilevel structure for high-rate parity-concatenated TCM",

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.",

keywords = "Iterative decoding, Multilevel coding, Serial concatenated coding, Trellis shaping, Trellis-coded modulation, Viterbi algorithm",

author = "Qi Wang and Lei Wei and Kennedy, \{Rodney A.\}",

year = "2002",

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AU - Wei, Lei

AU - Kennedy, Rodney A.

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N2 - 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.

AB - 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.

KW - Iterative decoding

KW - Multilevel coding

KW - Serial concatenated coding

KW - Trellis shaping

KW - Trellis-coded modulation

KW - Viterbi algorithm

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JO - IEEE Transactions on Communications

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Iterative Viterbi decoding, trellis shaping, and multilevel structure for high-rate parity-concatenated TCM

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