Evaluation of Inter-Cell Interference and BER on a Downlink PDSCH of the LTE Network

Abstract

In this paper, a comprehensive evaluation of intercell interference and BER on the physical downlink channel of an LTE cellular network is undertaken. Because spectrum bandwidth is a scarce resource, operators are compelled to reassign frequency in a process called frequency reuse. However, the downlink channel of the currently deployed LTE network in Ghana, has low average throughput and data rate. This results from the fact that an interfering cell from adjacent eNodeB interrupts with the serving eNodeB. For cell-edge users (CEUs), the effect of inter-cell interference is especially severe. MATLAB was used to build models and to carry out simulations on the evaluation of this form of interference in LTE network. Simulation results were obtained for BER considering different adaptive modulation and also for simulation of the PDSCH transceiver which depicts the effect of inter-cell interference on the downlink throughput.