NDLI: Index coding: An interference alignment perspective

Content Provider	IEEE Xplore Digital Library
Author	Maleki, H. Cadambe, V. Jafar, S.
Copyright Year	2012
Description	Author affiliation: Center for Pervasive Communications and Computing (CPCC) at the University of California, Irvine, CA 92617, USA (Maleki, H.; Jafar, S.) \|\| Research Lab of Electronics at Massachusetts Institute of Technology, and the Electrical & Computer Engineering Department at Boston University (Cadambe, V.)
Abstract	The index coding problem is a multiple unicast wireline communication network where the network is represented by a directed graph having exactly one link with finite capacity (also known as the bottleneck link). There are K independent sources which share the ingress of this bottleneck link. Correspondingly there are K destinations which are on the receiving end of the bottleneck link, with each destination intending to decode the message of one (unique) corresponding source. Each destination can have apriori side-information of a (different) subset of the original source messages. In this paper, we study the capacity of such a network from the perspective of interference alignment, and derive information theoretically optimal schemes for a class of networks. In our first main result, we identify the set of graphs where each user can achieve half rate in the index coding problem. In a second result, we derive the capacity for a class of symmetric index coding networks.
Starting Page	2236
Ending Page	2240
File Size	183713
Page Count	5
File Format	PDF
ISBN	9781467325806
ISSN	21578117
e-ISBN	9781467325790
e-ISBN	9781467325783
DOI	10.1109/ISIT.2012.6283851
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-07-01
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Encoding Indexes Vectors Interference Receivers Network coding
Content Type	Text
Resource Type	Article

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