Evaluating Energy and Spectral Efficiency of Massive MIMO Cellular Networks using random initialization

Abstract

The use of the large size antenna arrays is capable of bringing the substantial improvements in energy or spectral efficiency of the wireless cellular networks. Improving the energy efficiency is a bit challenging task in hand due to the varying spatial resolution and size of the network which needs variable array gain. Massive MIMO has immerged as the broad field of research in order to improve the capacity and efficacy of the cellular mobile networks as they uses the huge number of antennas at the mobile base stations (BSs). Use of Massive MIMO structure may provide the strong antenna gains and minimizes inter user interference amount. As each of these systems efficiency rely on some assumptions. This paper proposes to assume and model the cellular network using the normal pseudorandom initialization which improves the initial estimations and thus in turn the overall energy efficiency. It is proposed to evaluate the performance of new network model to investigate the energy and spectral efficiency without being much change in the network capacity. The modified massive MIMO system is capable of providing large multiplexing gain and also improves the initial gain of the system. Changing the hardware technology at the massive MIMO is slightly costlier thus current paper proposes to change the distribution model of the network. It is found that the proposed network model improves the energy efficiency and capacity of the network.