Journal ArticleDOI
Trellis-coded modulation with bit interleaving and iterative decoding
Xiaodong Li,James A. Ritcey +1 more
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TLDR
It is shown that convolutional codes with good Hamming-distance property can provide both high diversity order and large free Euclidean distance for BICM-ID, which provides a simple mechanism for variable-rate transmission.Abstract:
This paper considers bit-interleaved coded modulation (BICM) for bandwidth-efficient transmission using software radios. A simple iterative decoding (ID) method with hard-decision feedback is suggested to achieve better performance. The paper shows that convolutional codes with good Hamming-distance property can provide both high diversity order and large free Euclidean distance for BICM-ID. The method offers a common framework for coded modulation over channels with a variety of fading statistics. In addition, BICM-ID allows an efficient combination of punctured convolutional codes and multiphase/level modulation, and therefore provides a simple mechanism for variable-rate transmission.read more
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Journal ArticleDOI
Low-complexity iterative demodulation for noncoherent coded transmission over Ricean-fading channels
Lutz Lampe,Robert Schober +1 more
TL;DR: A low-complexity receiver structure is proposed, which is very well suited to mobile communication scenarios with time-variant and nonstationary transmission channels and results from information theory are well confirmed by simulation results presented for different channel scenarios.
Journal ArticleDOI
Code-aided estimation and detection on time-varying correlated MIMO channels: a factor graph approach
Frederik Simoens,Marc Moeneclaey +1 more
TL;DR: A code-aided estimation scheme which exploits information from both the pilot symbols and the unknown coded data symbols for estimation of flat-fading channels obeying a Gauss-Markov model is designed.
Journal ArticleDOI
Serial concatenated TCM with an inner accumulate code-part I: maximum-likelihood analysis
Hugo Tullberg,Paul H. Siegel +1 more
TL;DR: Computer simulations demonstrate that the proposed serial concatenated trellis-coded modulation system, despite its use of a simple rate-1 inner code, achieves performance in additive white Gaussian noise and Rayleigh fading that is comparable to, or better than, that of more complex systems suggested in the literature.
Proceedings ArticleDOI
Towards the capacity of noncoherent orthogonal modulation: BICM-ID for turbo coded NFSK
TL;DR: It is found that feeding soft information from the decoder back to the demodulator improves performance by between 0.7-0.9 dB for 16-ary and 64-ary NFSK in AWGN and Rayleigh fading.
Journal ArticleDOI
Linear Precoders for Bit-Interleaved Coded Modulation on AWGN Channels: Analysis and Design Criteria
TL;DR: This paper investigates linear precoding for bit-interleaved coded modulation (BICM) on additive white Gaussian noise (AWGN) channels with optimal precoders for binary phase-shift keying (BPSK) signal set.
References
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Proceedings ArticleDOI
Near Shannon limit error-correcting coding and decoding: Turbo-codes. 1
TL;DR: In this article, a new class of convolutional codes called turbo-codes, whose performances in terms of bit error rate (BER) are close to the Shannon limit, is discussed.
Journal ArticleDOI
Optimal decoding of linear codes for minimizing symbol error rate (Corresp.)
TL;DR: The general problem of estimating the a posteriori probabilities of the states and transitions of a Markov source observed through a discrete memoryless channel is considered and an optimal decoding algorithm is derived.
Journal ArticleDOI
Channel coding with multilevel/phase signals
TL;DR: A coding technique is described which improves error performance of synchronous data links without sacrificing data rate or requiring more bandwidth by channel coding with expanded sets of multilevel/phase signals in a manner which increases free Euclidean distance.