2019/09/22 by Esha Bangar, Nima Taherkhani, Bangar, Esha +4
Computer Science · Engineering · #Advanced MIMO Systems Optimization #Cooperative Communication and Network Coding #Energy Harvesting in Wireless Networks #FOS: Electrical engineering #Full-Duplex Wireless Communications #Signal Processing (eess.SP) #Systems and Control (eess.SY) #cs.SY #eess.SP #eess.SY #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.1909.10105
arxiv created 2019/09/22 · openalex publication_date 2019/09/22 · arxiv updated 2019/09/24 · openalex created_date 2022/07/28 · openalex updated_date 2026/07/28
In this paper, the impact of channel estimation error (CEE) on the sum-rate capacity of multiple-input-multiple-output (MIMO) heterogeneous networks (HetNets) is investigated. It is assumed that the receiver is a linear minimum mean-square (LMMS) receiver. The architecture is based on the deployment of macro base stations with large antenna arrays and a secondary tier of small cell base stations having fewer number of antenna arrays. The key contribution of the paper is to highlight the noticeable impact of CEE on the sum-rate capacity of macro-cells. Furthermore, it is shown that CEE has only marginal impact on the sum-rate capacity of small cells. Simulations for the sum rate of macro users versus that of the small cell users for time-division duplex (TDD) are performed and the results are compared with the case when channel estimation error is present.