Downlink cell average spectral efficiency of distributed MIMO system under three dimensional model

Changshan Chen, Shugong Xu, Xinsheng Zhao

Research output: Contribution to journalConference articlepeer-review

Abstract

Due to the complicated fading environment of distributed multiple-input multiple-output (d-MIMO) systems, the closed-form expression of cell average spectral efficiency (CASE) is in general difficult to be obtained, not to mention the threedimension model. Hence, by assuming appropriate number of antennas configured on the remote access unit (RAU) of d-MIMO system, we firstly derive out a simple approximate expression of spectral efficiency with fixed pathloss according to the central limit theorem. To be more realistic, the closed-form of CASE at different locations of the target cell, under three-dimensional model, i.e., with considering the height of the RAU, is then given out. The theoretical and simulation results reveal that the CASE of d-MIMO system is bounded by the density and the height of RAU, and the CASE is robust to the changes of the user's location except for the cell-edge. Further, about 50% penalty of CASE from the cell-center to the cell-edge can be found. Moreover, the analytical results fit the simulations well, which verifies our analysis.

Original languageEnglish
Article number7841753
JournalProceedings - IEEE Global Communications Conference, GLOBECOM
DOIs
Publication statusPublished - 2016
Externally publishedYes
Event59th IEEE Global Communications Conference, GLOBECOM 2016 - Washington, United States
Duration: 4 Dec 20168 Dec 2016

Keywords

  • Cell average spectral efficiency
  • Closed-form
  • Distributed multiple-input multiple-output (d-MIMO)

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