Performance Analysis of MIMO-OFDM System Based on SVD Scheme under Multi Path Selective Fading Channel

Abstract

We consider in this paper a MIMO-OFDM wireless communication system based on pre-coding and SVD 
techniques, which the system has the feedback of CSI to the transmitted side. The multi path channel, delay spread, 
Rayleigh fading and channel noise are assumed in the simulation of the proposed system. The zero forcing method is 
applied for detection the data received. The purpose of this study proposed is to evaluate the BER performance and 
see it with different case about parameters. While The contribution of the MIMO-OFDM proposed system is 
appeared from the BER performance presented in the section result which the system have shown good 
improvement of BER in typical channel modeled by Rayleigh multi path channel while the improvement is kept 
particularly in the complex condition of the channel while the propagation considered by more paths until ten paths 
are used. And also the BER resulted show that the system guard important performance for high data rate either 
when the more carriers are used such as 128 and 256 and when more antenna (4×4) are simulated. The 
robustness of that system studied comes from using SVD scheme into the process of channel, from the pre-coding 
technique applied over the data transmitted and the properties of OFDM multi carriers that having such as guard 
interval, parallel transmission, and FFT technique.