2020/02/10 by Ahmad AlAmmouri, Jeffrey G. Andrews, AlAmmouri, Ahmad +3
Computer Science · Engineering · #Advanced MIMO Systems Optimization #Cooperative Communication and Network Coding #FOS: Computer and information sciences #Information Theory (cs.IT) #Wireless Communication Networks Research
paper · pdf · doi:10.48550/arxiv.2002.04118
openalex publication_date 2020/02/10 · openalex created_date 2022/07/26 · openalex updated_date 2026/07/28
We study the scaling laws of the signal-to-interference-plus-noise ratio\n(SINR) and area spectral efficiency (ASE) in multi-antenna cellular networks,\nwhere the number of antennas scales with the base station (BS) spatial density\n\λ. We start with the MISO case having Nt(\λ) transmit antennas\nand a single receive antenna and prove that the average SINR scales as\n\(Nt(\λ))/(\λ) and the average ASE scales as\n\λ\log\(1+\(Nt(\λ))/(\λ)\). For the MIMO case\nwith single-stream eigenbeamforming and Nr(\λ) \≤ Nt(\λ)\nreceive antennas, we prove that the scaling laws of the conditional SINR and\nASE are exactly the same as the MISO case, i.e. not dependent on\nNr(\λ). We also show that coordinated beamforming amongst K\≤\nNt(\λ) neighboring BSs does not improve the scaling laws regardless of\nK. From a system design perspective, our results suggest that deploying\nmulti-antenna BSs can help maintain the per-user throughput and the linear\nincrease in the ASE with BS density, while the number of antennas at the user\nequipment and the use of BS cooperation do not matter much.\n