期刊
IEEE WIRELESS COMMUNICATIONS LETTERS
卷 11, 期 10, 页码 2026-2030出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LWC.2022.3191137
关键词
MIMO communication; Cellular networks; Interference; Fading channels; Geometry; Stochastic processes; Transmitting antennas; Cellular networks; MIMO; stochastic geometry; poisson point process; open loop zero-forcing beamforming
资金
- U.S. NSF [CNS-2107276]
This letter studies the performance of a MIMO cellular network with location-aware transmission rank selection. By selecting the transmission rank for each link based on distance, the spectral efficiency is improved, and a tradeoff between coverage probability and spectral efficiency is investigated.
In this letter, we study the performance of a multiple-input multiple-output (MIMO) cellular network with location-aware transmission rank selection, where the number of transmit streams for every base-station (BS) and user equipment (UE) link is determined based on the average received power at the UE (hence, the link distance). We assume open-loop zero-forcing beam-forming (OL-ZFBF) at the receiver. We first develop a stochastic geometry based analytical framework for this setup by including the adaptive rank as a mark of each BS. Using this framework, we derive the coverage probability and spectral efficiency (SE) as a function of the rank selection threshold. Our analysis demonstrates that selecting transmission rank for each link on the basis of distance improves SE. We also investigate the tradeoff between coverage probability and SE.
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