Performance Evaluation of RIS-aided Multicell 5G and Beyond Wireless Cellular Communication Network

Huge demands of multimedia traffic through wireless cellular communication networks force researchers to find innovative ways to improve the capacity and service qualities of the networks. Reconfigurable Intelligence Surfaces (RISs) have received much attentions and have emerged as a potential candidate for the next generation of wireless cellular communication networks, i.e., the 5G and beyond, since RIS offers many advantages. On the other hand, the multicell wireless cellular communication network faces signal blockages, especially in urban areas. In addition to this issue, the multicell scenario of wireless cellular communication networks faces interference problems due to its frequency reuse property. The interference situation becomes worse when we apply the frequency reuse factor (FRF) of 1. This paper proposes the use of RIS to study its effects in reducing the blockage and interference issues in multicell wireless cellular communication networks. Single RIS are deployed in three cells of a wireless cellular network scenario. Extensive simulation experiments have been carried out. The performance parameters in terms of Signal to Interference plus Noise Ratio (SINR), throughput, and Bit Error Rate (BER) have been measured, collected, and analyzed. The simulation results show that the system with RIS, compared to the system without RIS with obstacle loss of 60 dB, achieved the performance improvements: 10.48 dB of SINR increase, 207.7% of throughput increase, and 22.74% of BER decrease.