Downlink performance of cell edge using cooperative BS for multicell cellular network

Abstract

We consider the downlink of a multicell system comprised of base stations (BSs) and user terminals equipped with multiple antennas respectively on the condition that arbitrary BS cooperation and distance dependent propagation path loss are assumed. In this paper, we consider homogeneous networks for the rectangular coordinates and show the cell edge performance of cellular networks based on distance from their cell center, i.e., BS. We focus on the downlink capacity of edge users in the cellular networks and show that BS cooperation can improve the spectral efficiency. The BSs cooperate for their transmission to the cell edge users in order to improve their signal-tointerference-plus-noise ratio (SINR) for inter-cell interference (ICI) cancelation in downlink multicell systems. When fractional frequency reuse (FFR) is applied to the cell edge, it is conjectured that BS cooperation, or a coordinated multipoint (CoMP), will further improve the system performance. Simulation results show that the proposed scheme outperforms the reference schemes in terms of the cell edge SINR with a minimal impact on the path loss exponent in the networks.

On the Area Energy Efficiency of Multiple Transmit Antenna Small Base Stations

“…CoMP is a cooperation technology where one or more BSs serve the UE in order to mitigate interferences and to achieve better throughputs. In [16], the combination of fractional frequency reuse and the cooperative/coordination of multiple separated cells, achieve an improvement for signal-to-interference-plus-noise ratio (SINR) at the cell edge of approximately 13 dB. Nevertheless, channel state information (CSI) must be constantly shared between UEs and BSs in order to make scheduling possible, which due to imperfections in channel estimation and number of served UEs may lead to different levels of interference cancellation.…”

Dynamic and location‐based power allocation mechanism for inter‐cell interference mitigation in 5G heterogeneous cellular network

“…In the literature, several ICI mitigation techniques and energy-efficient approaches for HetCNs are addressed. [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] In Zhang and Tian, 8 the summary of interference management technologies for an ultra-dense network is presented. The cell-edge user performance is investigated with a strategy of BS coordination along with frequency reuse (FR) schemes among cells.…”

Effect of intercell interference on cell boundary users in three‐cell and seven‐cell HetCN

“…Heath et al have discussed the Voronoi‐cell–based modeling of a heterogeneous network using SG and analyzed the effect of interference in the network . The cell‐edge user performance using coordination strategy and frequency reuse (FR) schemes among cells is presented . In Abiri and Mehrjoo, fractional FR (FFR) with sectorization and coordinated fair scheduling scheme is used to improve the cell‐edge user performance and to maintain fairness in resource allocation among users.…”

“…Ali Khan et al analyze the downlink performance of a cell‐edge user with MCs‐based homogeneous cellular networks. Motivated from the work in Ali Khan et al, authors tried to analyze the performance of cell boundary and HS users with MCs overlaying SCs. This paper also discusses the impact of ICI being encountered by users in the downlink network at the boundary of two or more cells.…”