Performance analysis of two digital wireless systems designed for voice and data transmissions on the Rayleigh fading channel

In this work we report the simulated performance of two digital wireless systems, designed for the transmission on a time selective Rayleigh flat fading channel. In the first system a four-dimensional trellis coded modulation with a non-coherent detection method, formed by a differential demodulator followed by a MLSE-type Viterbi decoder, has been adopted. The second system consists of a continuous phase modulation of GMSK type demodulated through a non-coherent detection method formed by a frequency discriminator followed by an estimator based on the Chung algorithm.