Stochastic Modeling and Analysis of User-Centric Network MIMO Systems

• DOI: 10.48550/arxiv.1808.06761
• Publication Date: 2018-01-01
• Authors: Caiyi Zhu; Wei Yu
• Keywords: Backhaul (telecommunications); Duplex (building); Channel state information; Baseline (sea)

This paper provides an analytical performance characterization of both uplink (UL) and downlink (DL) user-centric network multiple-input multiple-output (MIMO) systems, where a cooperating BS cluster is formed for each user individually the clusters different users may overlap. In this model, BSs (each equipped with multiple antennas) jointly perform zero-forcing beamforming to set single-antenna associated them. As compared baseline MIMO systems disjoint clusters, effect clustering that it improves signal strength in UL DL, while reducing cluster-edge interference DL. quantifies these effects by assuming form Poisson point processes further approximating powers using Gamma distributions appropriate parameters. We show cooperation significant gain as single-cell processing but advantage over system DL only. Although analytic results are derived assumption perfect channel state information infinite backhaul between BSs, they nevertheless provide architectural insight into design future cooperative cellular networks.