Derivative of BICM Mutual Information

Details Derivative of BICM Mutual Information Derivative of BICM Mutual Information

2007-08-15

arxiv.org/abs/0708.2026v1

Computer Science

Information Theory

submitted to the IET Electronics Letters. 4 pages, 1 figure

Scientific paper

In this letter we determine the derivative of the mutual information corresponding to bit-interleaved coded modulation systems. The derivative follows as a linear combination of minimum-mean-squared error functions of coded modulation sets. The result finds applications to the analysis of communications systems in the wideband regime and to the design of power allocation over parallel channels.

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