DS/SS/GMSK with differential detection over multipath Rayleigh fading channels

This paper deals with performance evaluation of CDMA based on DS/SS/GMSK signaling with the differential detection over multipath Rayleigh fading channels. To demodulate DS/SS/GMSK signals, we consider differential detection, which does not need a carrier recovery. The bit-error-rate performance is evaluated in the presence of thermal noise and multiple-access interferences under the multipath Rayleigh fading environment.