Analysis of ARQ protocols using AAED codes over the m(≥2)-ary Z-channel

The error types in some VLSI systems and some communication media is of asymmetrie in nature. In this paper, for selective-repeat ARQ protocol over m(≥2)-ary asymmetrie channel, some analysis of the throughput when using All Asymmetric Error Detecting (AAED) codes are given. For these codes, the number of retransmissions needed to receive all codewords correctly is derived. As a special case, the number of retransmissions needed to receive all codewords correctly is derived for the Z-channel.