COMPUTER-SIMULATION OF RADIO CHANNELS USING A HARMONIC DECOMPOSITION TECHNIQUE

Based on a harmonic decomposition of stochastic processes, a new approach for approximating the time variant radio channel impulse response, given an arbitrary Doppler Power Density Spectrum is presented. The basic 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 function of the number of terms in the expansion is also given, The proposed method is particularly adapted for simulating broadband radio channels.