Direct comparison adaptive halting decoder and method of use

摘要

A direct comparison adaptive halting turbo decoder computes the sum of the a priori and the extrinsic information sequences at each iteration step. The sum sequences are coded so as to be simple binary sequences. New sum sequences are generated during each iteration and used to estimate the state of the convergence without resorting to use of transmitted error detection codes. The adaptive halting turbo decoder is halted when the sum sequences generated in a single iteration step produce identical binary sequences, i.e. a change in the sum sequence is observed during the iteration and when there is no more change, the iteration is halted.