Performance Analysis and Location Optimization for Massive MIMO Systems with Circularly Distributed Antennas
Ang Yang, Yindi Jing, Chengwen Xing, Zesong Fei, Jingming Kuang
TL;DR
This paper provides an analytical performance analysis of a distributed massive MIMO system with circular antenna placement, deriving bounds for achievable rates and identifying optimal antenna locations to maximize system performance.
Contribution
It introduces a novel analytical framework for the achievable rate of circularly distributed massive MIMO systems and determines optimal antenna placement for enhanced performance.
Findings
Circularly distributed MIMO outperforms centralized systems.
Derived closed-form bounds for user achievable rates.
Optimal antenna placement maximizes average system rate.
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…
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