COMPUTER-SIMULATION OF RADIO CHANNELS USING A HARMONIC DECOMPOSITION TECHNIQUE

Based on a harmonic decomposition of stochastic processes, a new appro ach for approximating the time variant radio channel impulse response, given an arbitrary Doppler Power Density Spectrum is presented. The b asic idea is to use a Fourier expansion with uncorrelated coefficients to approximate the actual radio fading process, An upper bound on the Mean Square Error between the actual and approximated fading as a fun ction of the number of terms in the expansion is also given, The propo sed method is particularly adapted for simulating broadband radio chan nels.