Probability density function of M-ary FSK signal in the presence of Gaussian noise, intersymbol interference and G fading

摘要

A performance of the receiver for the demodulation of M-FSK signals in the presence of Gaussian noise, intersymbol interference and composite fading that consists of a multipath Nakagami-m fading and a shadowing is considered in this paper. The composite fading is modeled by the G distribution. The probability density function and the outage probability of M-ary FSK signal in the presence of noise, interference and fading is derived. Various numerical results are graphically presented for dual branch FSK receivers to illustrate the obtained mathematical analysis and to show the influence of system parameters to the system performance.