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
Citations
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Journal ArticleDOI
Near-Capacity Wireless Transceivers and Cooperative Communications in the MIMO Era: Evolution of Standards, Waveform Design, and Future Perspectives
TL;DR: MIMO-aided transceivers and their cooperation-assisted distributed or virtual MIMO counterparts constitute power-efficient solutions, which justifies the spectacular success of MIMOs.
Patent
Method and system for decoding low density parity check (ldpc) codes
TL;DR: In this article, an approach for transmitting messages using low density parity check (LDPC) codes is provided for transmit messages using a structured parity check matrix that imposes restrictions on a sub-matrix of the parity-check matrix to generate LDPC codes.
Journal ArticleDOI
Multidimensional mapping for bit-interleaved coded modulation with BPSK/QPSK signaling
TL;DR: This paper introduces multidimensional mapping for BICM-ID, where a group of bits is mapped to a vector of symbols, rather than a single symbol, which allows for more flexibility and potential performance improvements.
Journal ArticleDOI
Signal mappings of 8-ary constellations for bit interleaved coded modulation with iterative decoding
Nghi H. Tran,Ha H. Nguyen +1 more
TL;DR: Based on the technique of mutual information, good mappings of different 8-ary constellations are presented for BICM-ID systems over an additive white Gaussian noise (AWGN) channel.
Journal ArticleDOI
"Turbo DPSK" using soft multiple-symbol differential sphere decoding
TL;DR: A maximum a posteriori probability (MAP) multiple-symbol differential sphere decoder (MSDSD) which efficiently solves the high-dimensional search problem inherent to detection without CSI.
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.