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arXiv · 1911.02353

Analysis and Optimization of Random Cache in Multi-Antenna HetNets with Interference Nulling

Kangda Zhi·Guangji Chen·Ling Qiu·Xiaowen Liang·Chenhao Ren
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Abstract

From the perspective of statistical performance, this paper presents a framework for the per-user throughput analysis in random cache based multi-antenna heterogeneous networks (HetNets) with user-centric inter-cell interference nulling (IN). Using tools from stochastic geometry, an explicit expression for the per-user throughput is derived. Based on the analytical results, the optimal cache probabilities for maximizing the per-user throughput are analyzed. Theoretical analysis and numerical results reveal that the optimal random cache under interference nulling fully harvests the file diversity gain (FDG) and achieves a promising per-user throughput.

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Kangda Zhi, Guangji Chen, Ling Qiu, Xiaowen Liang, Chenhao Ren. 2019-11-06. Analysis and Optimization of Random Cache in Multi-Antenna HetNets with Interference Nulling. https://arxiv.org/abs/1911.02353

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