bounds govern the quant,ities Pr (E,) and Pr (E,), which we recall are the erasure and undetected-error probabilities for erasureschemes, or the listerror probability and average number of incorrect words on the list for listschemes. These bounds are given by Theorem 2. …
By an extension of Gallager's bounding methods, exponential error bounds applicable to coding schemes involving erasures, variable-size lists, and decision feedback are obtained. The bounds are everywhere the tightest known.