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Computer Science > Information Theory

arXiv:1408.1468 (cs)
[Submitted on 7 Aug 2014]

Title:Performance Analysis and Location Optimization for Massive MIMO Systems with Circularly Distributed Antennas

Authors:Ang Yang, Yindi Jing, Chengwen Xing, Zesong Fei, Jingming Kuang
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Abstract:In this paper, we analyze the achievable rate of the uplink of a single-cell multi-user distributed massive multiple-input-multiple-output (MIMO) system. The multiple users are equipped with single antenna and the base station (BS) is equipped with a large number of distributed antennas. We derive an analytical expression for the asymptotic ergodic achievable rate of the system under zero-forcing (ZF) detector. In particular, we consider circular antenna array, where the distributed BS antennas are located evenly on a circle, and derive an analytical expression and closed-form tight bounds for the achievable rate of an arbitrarily located user. Subsequently, closed-form bounds on the average achievable rate per user are obtained under the assumption that the users are uniformly located in the cell. Based on the bounds, we can understand the behavior of the system rate with respect to different parameters and find the optimal location of the circular BS antenna array that maximizes the average rate. Numerical results are provided to assess our analytical results and examine the impact of the number and the location of the BS antennas, the transmit power, and the path-loss exponent on system performance. It is shown that circularly distributed massive MIMO system largely outperforms centralized massive MIMO system.
Comments: Single column, 30 pages, 8 figures. Submitted to IEEE Transactions on Wireless Communications
Subjects: Information Theory (cs.IT)
Cite as: arXiv:1408.1468 [cs.IT]
  (or arXiv:1408.1468v1 [cs.IT] for this version)
  https://doi.org/10.48550/arXiv.1408.1468
Related DOI: https://doi.org/10.1109/TWC.2015.2441057

Submission history

From: Ang Yang [view email]
[v1] Thu, 7 Aug 2014 02:36:37 UTC (3,018 KB)
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Chengwen Xing
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