Analyzing the Bit Error Rate of NOMA over Rayleigh Fading Model.

Abstract

Our work investigates the performance characteristics of Non-Orthogonal Multiple Access (NOMA) in the context of wireless communication systems that are affected by Rayleigh fading channels. Here the characteristic performance is nothing but calculating the Bit-Error Rate (BER), capacity, and outage probability of the wireless communication system in the integration of Non-Orthogonal Multiple Access (NOMA). Non-orthogonal multiple Access (NOMA) is one of the multiple access schemes that aims at enhancing the efficiency of the spectrum. It also ensures that multiple users can accommodate the same frequency band. In this research, we will be developing a network of two users: a near user and a far user. By utilizing the MATLAB simulations, we can access the Bit-Error Rate (BER), capacity, and outage probability. Here we will have a base station from which a down-link transmission is connected to the users. To uphold fairness across the users, power allocation factors are duly managed. The main reason behind the addition of Rayleigh’s fading effect is, that it enables the realistic behavior of the channel. In Rayleigh’s fading, each transmitted bit will somehow encounter varying degrees of attenuation and phase shifts due to the multipath phenomenon. Simulation outcomes shed light on the ramifications of altering transmit power levels on key system performance metrics, thus providing valuable insights into the intricate interplay between Bit-Error Rate (BER), capacity, and outage probability. The above findings will play a vital role in efficient power allocation strategies and Successive Interference Cancellation (SIC) techniques in increasing the efficiency of  NOMA.  Overall, this paper study contributes to a deeper comprehension of NOMA’s operational dynamics within real-world wireless communication environments and also offers some significant implications for future system design.