Computationally Efficient Hybrid Algorithm for Peak to Average Power Ratio Reduction in Multiuser MIMO OFDM System

Thereare some of the constraints encountered in Multiuser Multiple Input and Multiple Output Orthogonal Frequency Division Multiplexing (MU-MIMO-OFDM) system are high Peak to average power ratio in the sent signal and intervention happened among various users. This paper proposes a new hybrid model algorithm to beat the issue of high Peak to average power ratio (PAPR). Unlike past calculations which are clipping & FITRA handled issues like computational complexity and PAPR. To get assessments of the hyper-parameters associated with previous model, as well as the signal, a variational Expectation-Maximization (EM) algorithm is developed. In addition, the combined Generalised Approximate Message Passing (GAMP) is embedded into a finite difference EM architecture, resulting in a significant reduction in the computational cost of the desired approach. With our intended algorithm, carry out a significant presentation improvement over existing strategies as far as the PAPR decrease and Computational complexity.