Abstract: In this paper error performance of block coding such as systematic block coding and cyclic coding over a- fading channel is analyzed. In wireless channel error burst can be removed with the help of interleaver hence performance of random interleaver is also analyzed. Improvement in bit error rate (BER) performance after systematic block coding and cyclic coding with and without random interleaving, have been shown with simulation results.

Keywords: a- fading, systematic block coding, cyclic coding, interleaving, bit error rate.