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http://dx.doi.org/10.3837/tiis.2016.07.007

Capacity Bounds on the Ergodic Capacity of Distributed MIMO Systems over K Fading Channels  

Li, XingWang (School of Physics and Electronic Information Engineering, Henan Polytechnic University)
Wang, Junfeng (School of Physics and Electronic Information Engineering, Henan Polytechnic University)
Li, Lihua (The State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunication)
Cavalcante, Charles C. (Wireless Telecommunications Research Group, Federal University of Ceara, Campus do Pici)
Publication Information
KSII Transactions on Internet and Information Systems (TIIS) / v.10, no.7, 2016 , pp. 2992-3009 More about this Journal
Abstract
The performance of D-MIMO systems is not only affected by multipath fading but also from shadowing fading, as well as path loss. In this paper, we investigate the ergodic capacity of D-MIMO systems operating in non-correlated K fading (Rayleigh/Gamma) channels. With the aid of majorization and Minkowski theory, we derive analytical closed-form expressions of the upper and lower bounds on the ergodic capacity for D-MIMO systems over non-correlated K fading channels, which are quite general and applicable for arbitrary signal-to-noise ratio (SNR) and the number of transceiver antennas. To intuitively reveal the impacts of system and fading parameters on the ergodic capacity, we deduce asymptotic approximations in the high and low SNR regimes. Finally, we pursue the massive MIMO systems analysis for the lower bound and derive closed-form expressions when the number of antennas at BS grows large, and when the number of antennas at transceivers becomes large with a fixed and finite ratio. It is demonstrated that the proposed expressions on the ergodic capacity accurately match with the theoretical analysis.
Keywords
D-MIMO; K fading channel; majorization theory; ergodic capacity;
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Times Cited By KSCI : 2  (Citation Analysis)
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