Codes for the asymmetric broadcast channel, generated by permutations (Corresp.)

An iterative technique is studied for constructing codes for the asymmetric broadcast channel which achieve the exponential error bound of Körner and Sgarro. The codes are generated by a sequence of relatively few (i.e., linear in blocklength) permutations. This technique generalizes and extends earlier results of Ahlswede and Dueck and of the author.