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Trellis-coded modulation with bit interleaving and iterative decoding
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DOI：10.1109/49.761047.png)
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Abstract
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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.
Keywords:
bit interleaving
convolutional code
flat fading
iterative decoding
Rayleigh fading
signal labeling
trellis-coded modulation
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