DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lashgari, Sina | ko |
dc.contributor.author | Avestimehr, Amir Salman | ko |
dc.contributor.author | Suh, Changho | ko |
dc.date.accessioned | 2014-08-29T01:48:55Z | - |
dc.date.available | 2014-08-29T01:48:55Z | - |
dc.date.created | 2014-04-28 | - |
dc.date.created | 2014-04-28 | - |
dc.date.created | 2014-04-28 | - |
dc.date.issued | 2014-04 | - |
dc.identifier.citation | IEEE TRANSACTIONS ON INFORMATION THEORY, v.60, no.4, pp.2180 - 2189 | - |
dc.identifier.issn | 0018-9448 | - |
dc.identifier.uri | http://hdl.handle.net/10203/188864 | - |
dc.description.abstract | We establish the degrees of freedom (DoF) of the two-user X-channel with delayed channel knowledge at transmitters [i.e., delayed channel state information at the transmitters (CSIT)], assuming linear coding strategies at the transmitters. We derive a new upper bound and characterize the linear DoF of this network to be 6/5. The converse builds upon our development of a general lemma that shows that, if two distributed transmitters employ linear strategies, the ratio of the dimensions of received linear subspaces at the two receivers cannot exceed 3/2, due to delayed CSIT. As a byproduct, we also apply this general lemma to the three-user interference channel with delayed CSIT, thereby deriving a new upper bound of 9/7 on its linear DoF. This is the first bound that captures the impact of delayed CSIT on the DoF of this network, under the assumption of linear encoding strategies. | - |
dc.language | English | - |
dc.publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | - |
dc.subject | INTERFERENCE ALIGNMENT | - |
dc.title | Linear degrees of freedom of the X-Channel with delayed CSIT | - |
dc.type | Article | - |
dc.identifier.wosid | 000333099400014 | - |
dc.identifier.scopusid | 2-s2.0-84896923763 | - |
dc.type.rims | ART | - |
dc.citation.volume | 60 | - |
dc.citation.issue | 4 | - |
dc.citation.beginningpage | 2180 | - |
dc.citation.endingpage | 2189 | - |
dc.citation.publicationname | IEEE TRANSACTIONS ON INFORMATION THEORY | - |
dc.identifier.doi | 10.1109/TIT.2014.2307053 | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Suh, Changho | - |
dc.contributor.nonIdAuthor | Lashgari, Sina | - |
dc.contributor.nonIdAuthor | Avestimehr, Amir Salman | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Delayed effects | - |
dc.subject.keywordAuthor | channel state information | - |
dc.subject.keywordAuthor | interference channels | - |
dc.subject.keywordAuthor | interference suppression | - |
dc.subject.keywordAuthor | wireless networks | - |
dc.subject.keywordAuthor | Delayed effects | - |
dc.subject.keywordAuthor | channel state information | - |
dc.subject.keywordAuthor | interference channels | - |
dc.subject.keywordAuthor | interference suppression | - |
dc.subject.keywordAuthor | wireless networks | - |
dc.subject.keywordPlus | INTERFERENCE ALIGNMENT | - |
dc.subject.keywordPlus | INTERFERENCE ALIGNMENT | - |
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