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Optimal Achievable Rates for Interference Networks With Random Codes.

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Název: Optimal Achievable Rates for Interference Networks With Random Codes.
Autoři: Bandemer, Bernd1, El Gamal, Abbas2, Kim, Young-Han3
Zdroj: IEEE Transactions on Information Theory. Dec2015, Vol. 61 Issue 12, p6536-6549. 14p.
Témata: RANDOM codes (Coding theory), SUPERPOSITION principle (Physics), MATHEMATICAL bounds, INTERFERENCE channels (Telecommunications), MAXIMUM likelihood decoding
Abstrakt: The optimal rate region for interference networks is characterized when encoding is restricted to random code ensembles with superposition coding and time sharing. A simple simultaneous nonunique decoding rule, under which each receiver decodes for the intended message as well as the interfering messages, is shown to achieve this optimal rate region regardless of the relative strengths of signal, interference, and noise. This result implies that the Han-Kobayashi bound, the best known inner bound on the capacity region of the two-user pair interference channel, cannot be improved merely by using the optimal maximum likelihood decoder. [ABSTRACT FROM AUTHOR]
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Databáze: Business Source Index
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Abstrakt:The optimal rate region for interference networks is characterized when encoding is restricted to random code ensembles with superposition coding and time sharing. A simple simultaneous nonunique decoding rule, under which each receiver decodes for the intended message as well as the interfering messages, is shown to achieve this optimal rate region regardless of the relative strengths of signal, interference, and noise. This result implies that the Han-Kobayashi bound, the best known inner bound on the capacity region of the two-user pair interference channel, cannot be improved merely by using the optimal maximum likelihood decoder. [ABSTRACT FROM AUTHOR]
ISSN:00189448
DOI:10.1109/TIT.2015.2476792