|| Zero-rate Reliability Function for Mismatched Decoding
||Marco Bondaschi, EPFL, Switzerland; Albert Guillén i Fàbregas, ICREA & UPF & Cambridge, Spain; Marco Dalai, University of Brescia, Italy|
||D3-S3-T1: Mismatched Decoding
||Wednesday, 14 July, 22:40 - 23:00
||Wednesday, 14 July, 23:00 - 23:20
We derive an upper bound on the reliability function of mismatched decoding for zero-rate codes. The bound is based on a result by Komlós that shows the existence of a subcode with certain symmetry properties. The bound is shown to coincide with the expurgated exponent at rate zero for a broad family of channel and decoding metric pairs.