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arXiv · 1909.10105

Sum Rate Capacity of MIMO HetNet Systems in the Presence of Channel Estimation Error

Esha Bangar·Nima Taherkhani·Kamran Kiasaleh
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Abstract

In this paper, the impact of channel estimation error (CEE) on the sum-rate capacity of multiple-input-multiple-output (MIMO) heterogeneous networks (HetNets) is investigated. It is assumed that the receiver is a linear minimum mean-square (LMMS) receiver. The architecture is based on the deployment of macro base stations with large antenna arrays and a secondary tier of small cell base stations having fewer number of antenna arrays. The key contribution of the paper is to highlight the noticeable impact of CEE on the sum-rate capacity of macro-cells. Furthermore, it is shown that CEE has only marginal impact on the sum-rate capacity of small cells. Simulations for the sum rate of macro users versus that of the small cell users for time-division duplex (TDD) are performed and the results are compared with the case when channel estimation error is present.

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Esha Bangar, Nima Taherkhani, Kamran Kiasaleh. 2019-09-22. Sum Rate Capacity of MIMO HetNet Systems in the Presence of Channel Estimation Error. https://arxiv.org/abs/1909.10105

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