Digital interleave in conjuction with Forward Error Correction (FEC) is an effecient method todeal with burst errors on data transmission. This paper introduces a mathematical idea of permutation replacement into convolution interleaver.Based on this view poiint
we present a new construction to realize the convolution in-terleaver which is similar to the T-switch in programming control switch machine. The method in this paper issimpler than that in GA scheme