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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Proceedings ArticleDOI
Relay-Induced Error Propagation Reduction for Decode-and-Forward Cooperative Communications
TL;DR: This work selected the most appropriate relay location for achieving a specific target Bit Error Ratio (BER) at the relay and signalled the RN-BER to the DN, which was exploited by the decoder at the destination.
Book ChapterDOI
Forward Error Correction for Optical Transponders
TL;DR: This chapter discusses the state-of-the-art FEC schemes for fiber-optic communications, and introduces the main techniques to combine coding and higher-order modulation (coded modulation), including constellation shaping.
Proceedings ArticleDOI
Optimised labeling maps for bit-interleaved transmission with turbo demodulation
Alexei Gorokhov,M. van Dijk +1 more
TL;DR: The effect of signal labeling is approached through the error rate analysis of maximum likelihood demodulation/decoding on one hand, and the statistical analysis of de-mapped bit metrics at the first demodulations iteration, on the other hand.
Journal ArticleDOI
Design and Analysis of Delayed Bit-Interleaved Coded Modulation With LDPC Codes
Yihuan Liao,Min Qiu,Jinhong Yuan +2 more
TL;DR: This paper investigates the design and performance of delayed bit-interleaved coded modulation (DBICM) with low-density parity-check (LDPC) codes and proposes a constrained progressive edge growth like algorithm to jointly construct LDPC codes and bit-Interleavers for DBICM, taking distinctive bit-channel’s capacity into account.
Patent
Apparatus for providing a combined digital signal
TL;DR: In this paper, a bit adder and a combiner are configured to add at least one filling bit to a block of the first digital input signal to obtain an adapted first-digital input signal, so that the block length of the second-digital-input signal is equal to the length of a first digital-output signal.
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.