Performance enhancing of MIMO‐OFDM system utilizing different interleaving techniques with rate‐less fountain raptor code

Abstract

Abstract Due to the importance of both rate‐less digital fountain codes and Multi‐Input Multi‐Output (MIMO) schemes in Fifth and Sixth Generation (5G/6G) wireless networks, this paper investigates enhancing the performance of MIMO‐Orthogonal Frequency Division Multiplexing (MIMO‐OFDM) based system by employing the rate‐less fountain codes. The rate‐less codes, such as the Tornado codes and Raptor codes, have a flexible code rate that differs from the classical channel coding schemes. This paper uses Raptor code to study the MIMO system's performance with the rate‐less codes over different wireless communications channels. The proposed MIMO‐fountain code‐based system has been tested over the various wireless communication channel conditions concerning the varied Frequency Doppler (FD). In the proposed rate‐less wireless communication system, multiple interleaving techniques and equalizers are used to improve its performance. Computer‐based simulation experiments are assigned to evaluate the MIMO‐fountain code system using the different data transmission scenarios. Simulation results confirm the superiority of the presented wireless rate‐less system compared to fixed‐rate wireless systems in terms of Bit Error Rate (BER) and throughput.