Performance of AWGN and fading channels on wireless communication systems using several techniques

In UWB (ultra-wide band), the receiver is receiving data with high data rate, so that necessary for reducing errors and delimit from BER value to give the best performance of the system with less noise. Therefore, necessary to choose the better channel with better BER performance when building the transceiver in order to produce less noise and high performance. The simulation results show a better performance of AWGN channel than fading channel. When using AWGN channel, the system will be shows a better performance, low bit error rate (BER) and low SNR. In this paper, Analyses the performance of BER based on various wireless communication techniques and some of the digital modulation schemes to compare between AWGN and fading channels. Fading channel divide into Rayleigh and Rician channels.