Error Exponents for Asynchronous Multiple Access Channels. Controlled Asynchronism may Outperform Synchronism

Autor:	Farkas, Lóránt, Kói, Tamás
Rok vydání:	2019
Předmět:	Computer Science - Information Theory
Druh dokumentu:	Working Paper
Popis:	Exponential error bounds achievable by universal coding and decoding are derived for frame-asynchronous discrete memoryless %asynchronous multiple access channels with two senders, via the method of subtypes, a refinement of the method of types. Maximum empirical multi-information decoding is employed. A key tool is an improved packing lemma, that overcomes the technical difficulty caused by codeword repetitions, via an induction based new argument. The asymptotic form of the bounds admits numerical evaluation. This demostrates that error exponents achievable by synchronous transmission (if possible) can be superseeded via controlled asynchronism, i.e. a deliberate shift of the codewords. Comment: 35 pages, 9 figures, will submitted to Transaction on Information Theory
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1907.05139 Zobrazit plný text záznamu View this record from Arxiv