Inner and outer bounding capacity region for multiple-access relay channel with non-causal side information at one encoder

Autor: Jalil Etminan, Farahnaz Mohanna, Ghosheh Abed Hodtani
Rok vydání: 2021
Předmět:
Zdroj: Wireless Networks. 28:85-106
ISSN: 1572-8196
1022-0038
DOI: 10.1007/s11276-021-02815-8
Popis: In this paper, we analyze inner and outer bounding capacity region of two-user multiple-access relay channel (MARC) with side information (SI) non-causally known at one encoder in different scenarios. First, we obtain a general capacity inner bound including various previous results as its special cases, where, the informed encoder transmits two-layer individual description of side information to the relay and destination, and block Markov, superposition, Marton and Gel’fand-Pinsker coding at the encoders and sliding-window decoding at the receiver are exploited. This individual side information can be considered as the partial SI at the relay and destination, which can potentially increase the transmission rates, especially for the uninformed encoder. Second, to show practical importance of the obtained inner bound, we extend it to the Gaussian version, which can be used in studying the coverage region and energy efficiency. Third, we study outer bounding the capacity region, aiming at outer bounds less than cut set bounds, by considering a general MARC with partial decode and forward (PDF) strategy at the relay. Finally, the obtained Gaussian inner bound is evaluated numerically, and we showed that our capacity inner bound results in more sum-rate in comparison with the previous studies.
Databáze: OpenAIRE
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