Analysis of OFDM error rates over nonlinear fading radio channels

This letter addresses the problem of OFDM analytical error rate evaluation over fading channels under nonlinear amplification. We obtain approximate solutions to the problem over Nakagami-m and compound gamma-log-normal fading radio channels. In the latter case, two approximations are used for the composite gamma-log-normal distribution. One of them is approximation by the generalized K distribution, and the other technique reduces the problem to that over Nakagami-m fading.