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On the Fundamental Limits of MIMO Massive Multiple Access Channels. (arXiv:1807.05553v1 [cs.IT])
来源于:arXiv
In this paper, we study multiple-antenna wireless communication networks
where a large number of devices simultaneously communicating with an access
point. The capacity region of multiple-input multiple-output massive multiple
access channels (MIMO mMAC) is investigated. While the joint typicality
decoding is utilized to establish the achievability of capacity region for
conventional multiple access channel with fixed number of users, the technique
is not directly applicable for MIMO mMAC [4]. Instead, an information-theoretic
approach based on Gallager's error exponent analysis is exploited to
characterize the capacity region of MIMO mMAC. Theoretical results reveal that
the capacity region of MIMO mMAC is dominated by the sum rate constraint only
and the individual user rate is determined by a specific factor that
corresponds to the allocation of sum rate. The individual user rate in
conventional MAC is not achievable with massive multiple access and the
successive interference cance 查看全文>>