A novel approach to model the Viterbi decoded error sequence

A novel approach called asymptotic geometric modeling (AGM) is proposed to model the error sequence generated by the Viterbi decoder. Several previously published modeling approaches are first reviewed. The error statistics produced by this novel approach are demonstrated through simulation to be in excellent agreement with that obtained from the actual Viterbi decoder while all the previous approaches exhibit some degree of deviations. In addition, the computer execution speed of the proposed approach is among the fastest of all approaches. This modeling approach is then applied to evaluate the high performance concatenated coding system