Title :
Bit-interleaved coded modulation with iterative decoding
Author :
Li, Xiaodong ; Ritcey, James A.
Author_Institution :
Lucent Technol., AT&T Bell Labs., Holmdel, NJ, USA
Abstract :
Bit-interleaved coded modulation (BICM) was originally suggested by Zehavi (1992) to increase the time diversity of coded modulation over Rayleigh fading channels. In its typical design with Gray signal labeling, BICM causes a degradation over Gaussian channels, compared with the conventional trellis-coded modulation. We show that bit interleaving can actually be used to increase the Euclidean distance between the codewords of a convolutional code. With iterative decoding and careful design of signal labeling and interleaving, BICM can provide great performance even for Gaussian channels
Keywords :
Gaussian channels; Rayleigh channels; iterative decoding; modulation coding; Euclidean distance; Gaussian channels; Gray signal labeling; Rayleigh fading channels; bit-interleaved coded modulation; codewords; convolutional code; iterative decoding; time diversity; trellis-coded modulation; Convolutional codes; Degradation; Euclidean distance; Fading; Gaussian channels; Interleaved codes; Iterative decoding; Labeling; Modulation coding; Signal design;
Conference_Titel :
Communications, 1999. ICC '99. 1999 IEEE International Conference on
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-5284-X
DOI :
10.1109/ICC.1999.765396
