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۱Extension of the Coverage Region of Multiple Access Channels by Using a Relay
نویسنده(ها): ،
اطلاعات انتشار: Journal of Communication Engineering، چهارم،شماره۱، Jan-Jun ۲۰۱۵، سال
تعداد صفحات: ۲۰
From practical and theoretical viewpoints, performance analysis of communication systems by using information–theoretic results is important. In this paper, based on our previous work on Multiple Access Channel (MAC) and Multiple Access Relay Channel (MARC), we analyze the impact of a relay on the fundamental wireless communications concept, i.e., coverage region of MARC, as a basic model for uplink communications between a base station and users with the help of a relay. This analysis includes the coverage region for the MAC as a special case. Considering rate regions for the Gaussian MARC and fading Gaussian MARC, it is proved that in a fixed transmission rate, the relay extends coverage region of the MARC. Numerical illustrations confirm our theoretical results.
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