On the use of Channel Introduced Redundancy for Error Correction

The problem considered is that of reducing intersymbol interference caused by time dispersive channels. Similarity between the response of a time dispersive channel and that of a cyclic algebraic encoder has led to a method of treating the dispersive channel as a linear encoder. A tapped delay line equalizer is used to complete the encoding process so that the result can be decoded and errors corrected. The tap gain vector for the equalizer is developed, and an upper bound on the probability of error is derived. The analysis and computer simulation results show that under certain conditions the error rate can be reduced by orders of magnitude.