Interference Challenges on 5G Networks: A Review

The 5G evolving mobile broadband is deployed on new technologies, namely; millimeter wave (mm-Wave), small cell (femtocells, picocells, and microcells), massive MIMO, beamforming, full-duplex (FD), and Device to Device (D2D) connection. The objectives are to achieve high speed and large network capacity and more functionalities like low latency, robust security, self-healing/awareness, and multi-tier heterogeneous architecture device support. However, interference challenges due to simultaneous usage of the same spectrum in the different cells, dense deployment of base stations (BSs), and massive use of antennas and access points adversely decrease system throughput, spectrum efficiency and network capacity. This paper presents the background study of the 5G network with respect to deployment challenges. It further shows the effects of interference on key enabling techniques for 5G. We also provided insight into open research issues on 5G interference. This review will guide scholars to comprehend various existing and emerging interference challenges, for further exploration and mitigation for the smooth implementation of the 5G network.