Please use this identifier to cite or link to this item: https://doi.org/10.1109/ISIT.2013.6620548
Title: On the dispersions of the discrete memoryless interference channel
Authors: Le, S.-Q.
Tan, V.Y.F.
Motani, M. 
Issue Date: 2013
Source: Le, S.-Q.,Tan, V.Y.F.,Motani, M. (2013). On the dispersions of the discrete memoryless interference channel. IEEE International Symposium on Information Theory - Proceedings : 1859-1863. ScholarBank@NUS Repository. https://doi.org/10.1109/ISIT.2013.6620548
Abstract: In this work, achievable dispersions for the discrete memoryless interference channel (DM-IC) are derived. In other words, we characterize the backoff from the Han-Kobayashi (HK) achievable region, the largest inner bound known to date for the DM-IC. In addition, we also characterize the backoff from Sato's region in the strictly very strong interference regime, and the backoff from Costa and El Gamal's region in the strong interference regime. To do so, Feinstein's lemma is first generalized to be applicable to the interference channel. Making use of the generalized Feinstein's lemma, it is found that the dispersions for the DM-IC can be represented by the information variances of eight information densities when HK message splitting is involved, and of six information densities for another encoding strategy. We also derive an outer bound that leverages on a known dispersion result for channels with random state by Ingber-Feder. It is shown that for the strictly very strong interference regime, the inner and outer bound have similar algebraic forms. © 2013 IEEE.
Source Title: IEEE International Symposium on Information Theory - Proceedings
URI: http://scholarbank.nus.edu.sg/handle/10635/71225
ISBN: 9781479904464
ISSN: 21578095
DOI: 10.1109/ISIT.2013.6620548
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