Fading Characteristics over Wireless Channels

Abstract

Multipath fading is phenomena that may cause attenuation and distortion to the transmitted signal. The signal transmitted may be diffracted, refracted or reflected over a spread of times from obstacles such as ground, hills, building that are located in the transmission path between the transmitter and receiver sides. Multipath fading, therefore, needs to be taken into consideration when designing wireless radio communication systems. This study presents the key characteristics and simulation modelling for various types of fading channels in the wireless transmission system. Besides, an effort has been made to illustrate the performance comparison of different types of small-scale fading that are subjected to due to multipath delay spread in time and a movement of mobility. The simulations of small-scale fading over the wireless channel that are dependent on Doppler spread and delay spread were determined using communication toolbox in MATLAB.