Outage Analysis of Relay-Assisted mmWave Cellular Systems Employing JSDM

• Published in: IEEE access Vol. 7; pp. 60793 - 60805
• Main Authors: Chen, Jun, Qiao, Deli, Qian, Haifeng
• Format: Journal Article
• Language: English
• Published: Piscataway IEEE 2019; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Antennas; Cellular networks; joint spatial division and multiplexing; Millimeter wave; Millimeter wave communication; Millimeter waves; Multiplexing; outage probability; Power system reliability; Precoding; Probability; Relay; Relays
• ISSN: 2169-3536; 2169-3536
• DOI: 10.1109/ACCESS.2019.2915601

In this paper, the outage probabilities of relay-assisted millimeter wave (mmWave) cellular systems employing joint spatial division and multiplexing (JSDM) are investigated. It is assumed that the macro base station (BS) equipped with a large number of antennas serves the single antenna relay and users simultaneously and that the relay is located at the edge of the macro cell. Theoretical analysis of the signal-to-interference-plus-noise ratio (SINR) outage probabilities of each user with and without the second stage precoding is first obtained, respectively. The cell SINR outage probabilities are then derived. Under the noise-limited assumption, simplified closed-form expressions of the outage probabilities are given as well. The simulation results demonstrating the performance improvement due to the relay are provided. Overall, the impact of deploying a relay in the mmWave cellular systems on the outage probabilities is characterized.