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Exact Assessment of the Delay-Rate Tradeoff in Ergodic Interference Alignment

Zorzi, Michele and Khamesi, Atieh R. and Lahouti, Farshad (2018) Exact Assessment of the Delay-Rate Tradeoff in Ergodic Interference Alignment. IEEE Communications Letters, 22 (5). pp. 910-913. ISSN 1089-7798. https://resolver.caltech.edu/CaltechAUTHORS:20180523-133743261

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Abstract

In order to increase the network capacity and fulfill the Quality of Service requirements in multi-user wireless networks, interference alignment (IA) has been proposed. Subsequently, ergodic IA was introduced as a promising scheme to achieve a degrees-of-freedom metric equal to (1/2), at the expense of additional delay. In this letter, we study the delay-rate trade-off in ergodic IA and exactly compute the best delay exponent of JAP-B, the state-of-the-art ergodic IA scheme. Moreover, we derive lower and upper bounds for the best delay exponent and show the much better tightness of the proposed bounds compared with those available in the state of the art.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1109/LCOMM.2018.2810867DOIArticle
ORCID:
AuthorORCID
Zorzi, Michele0000-0003-2870-4678
Khamesi, Atieh R.0000-0003-3798-2223
Lahouti, Farshad0000-0002-8729-873X
Additional Information:© 2018 IEEE. Manuscript received December 5, 2017; revised January 27, 2018; accepted February 22, 2018. Date of publication March 1, 2018; date of current version May 8, 2018.
Subject Keywords:Interference alignment, interference channels, delay-rate tradeoff, delay exponent, closed-form solution
Issue or Number:5
Record Number:CaltechAUTHORS:20180523-133743261
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20180523-133743261
Official Citation:M. Zorzi, A. R. Khamesi and F. Lahouti, "Exact Assessment of the Delay-Rate Tradeoff in Ergodic Interference Alignment," in IEEE Communications Letters, vol. 22, no. 5, pp. 910-913, May 2018. doi: 10.1109/LCOMM.2018.2810867
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:86569
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:24 May 2018 16:30
Last Modified:09 Mar 2020 13:18

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