This work presents the state-of-the-art of wireless communication system performance metrics through the reviewing of multi-path propagation model and Singular-Value-Decomposition (SVD) method to enhance the channel capacity in the 4th and 5th generation wireless communication systems. MIMO has shown rapid improvement in data rate by lowering the Signal-to-Noise ratio (SNR). In multi-path propagation, fading is a serious issue that increases the overall average Bit-Error Rate (BER). In this research, an improvement of data rate in terms of enhancing the channel capacity of the MIMO system is summarized by reducing the SNR using SVD. An Empirical model of the MIMO system is studied, and an IID Rayleigh-Fading MIMO system is modeled to compute the channel capacity.