DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Sunghyun | ko |
dc.contributor.author | Wang, I-Hsiang | ko |
dc.contributor.author | Suh, Changho | ko |
dc.date.accessioned | 2018-06-16T07:36:31Z | - |
dc.date.available | 2018-06-16T07:36:31Z | - |
dc.date.created | 2018-06-11 | - |
dc.date.created | 2018-06-11 | - |
dc.date.created | 2018-06-11 | - |
dc.date.created | 2018-06-11 | - |
dc.date.issued | 2018-06 | - |
dc.identifier.citation | IEEE TRANSACTIONS ON INFORMATION THEORY, v.64, no.6, pp.4581 - 4593 | - |
dc.identifier.issn | 0018-9448 | - |
dc.identifier.uri | http://hdl.handle.net/10203/242525 | - |
dc.description.abstract | We investigate the benefits of incorporating relays in future multi-user wireless networks that seek to exploit unexplored bands of very high frequency spectrum, where transmitted signals are known to be highly susceptible to outages. To this end, we examine a two-user bursty MIMO Gaussian interference channel with an in-band relay, where Bernoulli random states conceptually capture signal outages. As our main result, we show that an in-band relay can provide a degrees of freedom (DoF) gain in this bursty channel. This beneficial role of in-band relays in the bursty channel is in direct contrast to their role in the non-bursty channel which is not as significant to provide a DoF gain. More importantly, we demonstrate that in certain antenna configurations, an in-band relay can help achieve interference-free performances with increased DoF. We find the benefits particularly substantial in high-outage circumstances, as the DoF gain can grow linearly with the number of antennas at the relay. In this paper, first we derive an outer bound from which we obtain a necessary condition for interference-free DoF performances. Then we develop a novel scheme that exploits information of the bursty channel states to achieve them. | - |
dc.language | English | - |
dc.publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | - |
dc.title | A Relay Can Increase Degrees of Freedom in Bursty Interference Networks | - |
dc.type | Article | - |
dc.identifier.wosid | 000432983500039 | - |
dc.identifier.scopusid | 2-s2.0-85045749650 | - |
dc.type.rims | ART | - |
dc.citation.volume | 64 | - |
dc.citation.issue | 6 | - |
dc.citation.beginningpage | 4581 | - |
dc.citation.endingpage | 4593 | - |
dc.citation.publicationname | IEEE TRANSACTIONS ON INFORMATION THEORY | - |
dc.identifier.doi | 10.1109/TIT.2018.2827465 | - |
dc.contributor.localauthor | Suh, Changho | - |
dc.contributor.nonIdAuthor | Kim, Sunghyun | - |
dc.contributor.nonIdAuthor | Wang, I-Hsiang | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Bursty interference | - |
dc.subject.keywordAuthor | relay networks | - |
dc.subject.keywordAuthor | interference cancellation | - |
dc.subject.keywordAuthor | degrees of freedom | - |
dc.subject.keywordPlus | OF-BAND RELAY | - |
dc.subject.keywordPlus | ACHIEVABLE RATES | - |
dc.subject.keywordPlus | CHANNEL | - |
dc.subject.keywordPlus | CAPACITY | - |
dc.subject.keywordPlus | FEEDBACK | - |
dc.subject.keywordPlus | BITS | - |
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