The radio signals in wireless communication system are ruined by large and small scale fading during transmission. In a two-hop wireless link, the radio signals are affected by multipath fading for which the overall performance of the system degrade. In this thesis performance of different modulation schemas (MPSK, MQAM, DEPSK) are will analyzed under Rayleigh, Nakagami-m and Rician fading environment separately. And their result will be compared to evaluate performance difference between different modulation techniques. At last the result are shown using different graph and also comparison of different modulation techniques are discussed using comparison graph.

Keywords : Fading Channel;Probability of Symbol Error; Modulation Performance