Achievable Error Exponents for Channels With Side Information-Erasure and List Decoding

作者：Sabbag Erez^*; Merhav Neri

来源：IEEE Transactions on Information Theory, 2010, 56(11): 5424-5431.

DOI：10.1109/TIT.2010.2070350

• Channel coding with side information
• erasure
• error exponents
• list
• method of types
• random binning
• random coding

We consider a decoder with an erasure option and a variable size list decoder for channels with non-casual side information at the transmitter. First, a universally achievable region of error exponents is offered for decoding with an erasure option using a parameterized decoder in the spirit of Csiszar and Korner's decoder. Then, the proposed decoding rule is generalized by extending the range of its parameters to allow variable size list decoding. This extension gives a unified treatment for erasure/list decoding. An achievable region of exponential bounds on the probability of list error and the average number of incorrect messages on the list are given. Relations to Forney's and Csiszar and Korner's decoders for discrete memoryless channel are discussed. These results are obtained by exploring a random binning code with conditionally constant composition codewords proposed by Moulin and Wang, but with a different decoding rule and a modified analysis.

• 出版日期2010-11