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The compress-and-forward relay scheme developed by (Cover and El Gamal, 1979) is modified by realizing that it is not necessary for the destination to decode the compressed observation of the relay; and even if the compressed observation is to be decoded, it can be more easily done by joint decoding with the original message, rather than in a successive way. This modification introduces flexibility...
Under the standard random coding framework, the conditional entropy rate of the channel output given the codebook information is investigated. It is shown that there exists an interesting dichotomy: with respect to the unconditional entropy rate of the output, this conditional entropy rate is reduced when the communication rate is below the channel capacity, but remains the same when the communication...
In the classical compress-and-forward relay scheme developed by (Cover and El Gamal, 1979), the decoding process operates in a successive way: the destination first decodes the compressed observation of the relay, and then decodes the original message of the source. Recently, two modified compressand- forward relay schemes were proposed, and in both of them, the destination jointly decodes the compressed...
The output distribution of a Gaussian channel, when the rate is above capacity, is investigated. It is shown that there is an asymptotic equipartition property (AEP) of the typical output sequences, independently of the specific codebook used, as long as the codebook is typical according to the standard random codebook generation. This equipartition of the typical output sequences is caused by the...
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