2015/09/14 by Hieu Duy Nguyen, Sumei Sun, Nguyen, Hieu Duy +1
Computer Science · Engineering · Mathematics · #Advanced MIMO Systems Optimization #Advanced Wireless Network Optimization #FOS: Computer and information sciences #Information Theory (cs.IT) #Millimeter-Wave Propagation and Modeling #cs.IT #math.IT
paper · pdf · doi:10.48550/arxiv.1509.03998
11 pages, 9 figures. Submitted to IEEE Transactions on Wireless Communications
arxiv created 2015/09/14 · openalex publication_date 2015/09/14 · arxiv updated 2015/09/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In this paper, we study the downlink performance of two important 5G network architectures, i.e. massive multiple-input multiple-output (M-MIMO) and small-cell densification. We propose a comparative modeling for the two systems, where the user and antenna/base station (BS) locations are distributed according to Poisson point processes (PPPs). We then leverage both the stochastic geometry results and large-system analytical tool to study the SIR distribution and the average Shannon and outage rates of each network. By comparing these results, we observe that for user-average spectral efficiency, small-cell densification is favorable in crowded areas with moderate to high user density and massive MIMO with low user density. However, small-cell systems outperform M-MIMO in all cases when the performance metric is the energy efficiency. The results of this paper are useful for the optimal design of practical 5G networks.