Performance Analysis of Multiple Chips Per Symbol M-ary FSK in Fast, Slow and Partially Correlated Rayleigh Fading

Error rate performance analysis is presented in this paper for the multiple chips per symbol M-ary FSK in the fast, slow and partially correlated Rayleigh fading environments. Exact error rate expressions are given for the three fading situations considered. Numerical results are provided for the 8-FSK waveform. Error performance with forward error control coding is also presented to show the improvement over the uncoded cases. These results have direct application to the design of ionospheric communication systems.