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Or a given linear code, a lower bound on the error exponent under maximum likelihood decoding is investigated at low rates. or a given linear code, a lower bound on the error exponent under maximum likelihood decoding is investigated at low rates. F In the analysis of the decoding error probability, it is important to characterize the error exponent, since it indicates how fast the probability of...
Coding for discrete memoryless compound multiple access channels (MACs) with common information is considered. A construction method for an ensemble of MAC codes is proposed based on non-binary low-density parity check (LDPC) codes. It is shown that an overall MAC code asymptotically approaches the random coding exponent for the compound MAC with common information under joint maximum likelihood decoding...
The concatenation of an arbitrary discrete memoryless channel with binary input followed by a quantizer is considered. For a restricted quantizer alphabet size, it is shown that the maximum of the mutual information between the channel input and the quantizer output can be found by dynamic programming. Numerical examples are given to illustrate the results. This problem is shown to be an example of...
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