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Outage Analysis of Block-Fading Gaussian Interference Channels

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Title: Outage Analysis of Block-Fading Gaussian Interference Channels
Author(s): Weng, Yang; Tuninetti, Daniela
Abstract: This paper considers the asymptotic behavior of the outage probability of a two-source block-fading single-antenna Gaussian interference channel in the high-SNR regime by means of the diversity-multiplexing tradeoff. A general setting where the user rates and the average channel gains are not restricted to be symmetric is investigated. This asymmetric scenario allows to analyze networks with “mixed” interference, i.e., when different sources are at different distance from their intended destination, that are not possible under the commonly used symmetric assumption. Inner and outer bounds for the diversity are derived. The outer bound is based on the recent “to within one bit” capacity result of Etkin et al. for the unfaded Gaussian channel and is a re-derivation of a known bound for which an error is pointed out. The inner bound is based on the Han and Kobayashi achievable region both without rate splitting and with a rate spitting inspired by the “to within one bit” capacity result. An analytical comparison of the diversity upper and lower bounds for a general channel seems difficult; by numerical evaluations, the two bounds are shown to coincide for a fairly large set of channel parameters.
Issue Date: 2011-10
Publisher: Institute of Electrical and Electronics Engineers
Citation Info: Weng, Y. & Tuninetti, D. 2011. Outage Analysis of Block-Fading Gaussian Interference Channels. IEEE Transactions on Information Theory, 57(10): 6487-6501. DOI: 10.1109/TIT.2011.2161957
Type: Article
Description: (c) 2011 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works. DOI: 10.1109/TIT.2011.2161957
URI: http://hdl.handle.net/10027/8470
ISSN: 0018-9448
Date Available in INDIGO: 2012-08-15
 

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