Coverage Analysis of Multi-Stream MIMO HetNets with MRC Receivers

Khoshkholgh, Mohammad G. and Navaie, Keivan and Shin, Kang G. and C. M. Leung, Victor (2017) Coverage Analysis of Multi-Stream MIMO HetNets with MRC Receivers. IEEE Transactions on Wireless Communications, 16 (12). pp. 7816-7833. ISSN 1536-1276

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Abstract

Most of current research on the coverage performance of multi-stream MIMO heterogeneous networks (HetNets) has been focusing on a single data-stream. This does not always provide accurate results as our analysis shows the cross-stream correlation due to interference can greatly affect the coverage performance. This paper analyzes the coverage probability in such systems, and studies the impact of cross-stream correlation. Specifically, we focus on the max-SIR cell association policy, and leverage stochastic geometry to study scenarios whereby a receiver is considered in the coverage, if all of its data-streams are successfully decodeable. Assuming open-loop maximum ratio combining (MRC) at receivers, we consider cases where partial channel state information is available at the receiver. We then obtain an upper-bound on the coverage and formulate crossstream SIR correlation. We further show that approximating such systems based on fully-correlated (non-correlated) datastreams, results in a slight underestimation (substantial overestimation) of the coverage performance. Our results provide insights on the multiplexing regimes where densification improves the coverage performance and spectral efficiency. We also compare MRC with more complex zero-forcing receiver and provide quantitative insights on the design trade-offs. Our analysis is validated via extensive simulations.

Item Type:
Journal Article
Journal or Publication Title:
IEEE Transactions on Wireless Communications
Additional Information:
©2017 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2200/2208
Subjects:
ID Code:
87761
Deposited By:
Deposited On:
14 Sep 2017 07:54
Refereed?:
Yes
Published?:
Published
Last Modified:
24 Sep 2020 03:31