FADING SIMULATION METHOD

PURPOSE:To obtain a fading simulator close to the fading of a real line against the time fluctuation of fading by using a simple algorithm so as to limit the change in the amplitude rho and the phase shift phi and forming the density distribution of the rho and phi to be a uniform distribution or a desired distribution such as Rayleigh distribution. CONSTITUTION:A controller 8 divides the generating area of a random number into 1/N to decide a random number (n) (random number of 2nd group) generated by a required resolution of amplitude rho of one division area. Moreover, number of the 1st group random numbers is selected three (such as 1, 2, 3). The first sample point of a fading simulator is optional and the generating area of the next sample point is decided in response to the random number of the 1st group. Thus, the random number of the 2nd group is generated and the variable attenuator 5 is controlled to realize the corresponding amplitude rhoand the phase shift phi is decided by the random number of the 2nd group generated separately at the same time, the infinite phase shifter 6 is controlled to generated an interference wave as the output of the fading simulator.