ABSTRACT
In mobile channels, transmitted signals reach the receiver by moving over different paths. There should be either a line of sight or different ground shapes such as buildings, hills, or planet covers between the transmitter and receiver. Because of the ground shapes, reflection, refraction, or scattering could cause electromagnetic waves to be emitted during mobile communications. The transmitted signals are delayed reaching the receiver because of these obstacles. Mobile radio channels change randomly and, therefore, are difficult to investigate, unlike stationary channels. Transmitted symbols reach the receiver over various channels with different time intervals. The case in which signals are transmitted to the receiver over various paths is called a multipath channel.
