Sum-Rate Maximization Schemes for K-User MISO Interference Channels With a Cognitive Relay
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Shin, Hun Min | - |
dc.contributor.author | Lee, Sang-Rim | - |
dc.contributor.author | Kong, Han-Bae | - |
dc.contributor.author | Lee, Inkyu | - |
dc.date.accessioned | 2021-09-04T11:05:39Z | - |
dc.date.available | 2021-09-04T11:05:39Z | - |
dc.date.created | 2021-06-10 | - |
dc.date.issued | 2015-11 | - |
dc.identifier.issn | 1536-1276 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/92067 | - |
dc.description.abstract | In this paper, we consider K-user multiple-input single-output interference channels with a cognitive relay. Assuming that data of all transmitters and channel state information are known at the cognitive relay, we design a linear precoder for the cognitive relay with the aim of maximizing the sum-rate without changing the transmitter operations at all transmitters. We first define the receiver set as a set which contains a part of the receivers, and then introduce a performance metric called "partial signal-to-interference-plus-noise ratio" (PSINR) based on the receiver set. Then, we can obtain a precoder at the cognitive relay by solving the PSINR maximization problem. The optimal receiver set which yields the maximum sum-rate can be identified by checking all possible receiver sets. Since this exhaustive search has prohibitive complexity, we develop a low complexity set search method by utilizing the properties of the optimal receiver set. Combining the PSINR maximization problem and the low complexity search method, we finally propose a precoder design scheme for the sum-rate maximization. Numerical simulation results confirm that the proposed scheme shows performance close to the projected gradient method with much reduced complexity. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | - |
dc.subject | ALGORITHMS | - |
dc.subject | CAPACITY | - |
dc.subject | DESIGNS | - |
dc.subject | RADIO | - |
dc.title | Sum-Rate Maximization Schemes for K-User MISO Interference Channels With a Cognitive Relay | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Inkyu | - |
dc.identifier.doi | 10.1109/TWC.2015.2454496 | - |
dc.identifier.scopusid | 2-s2.0-84959422540 | - |
dc.identifier.wosid | 000365046100043 | - |
dc.identifier.bibliographicCitation | IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, v.14, no.11, pp.6448 - 6458 | - |
dc.relation.isPartOf | IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | - |
dc.citation.title | IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | - |
dc.citation.volume | 14 | - |
dc.citation.number | 11 | - |
dc.citation.startPage | 6448 | - |
dc.citation.endPage | 6458 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalResearchArea | Telecommunications | - |
dc.relation.journalWebOfScienceCategory | Engineering, Electrical & Electronic | - |
dc.relation.journalWebOfScienceCategory | Telecommunications | - |
dc.subject.keywordPlus | ALGORITHMS | - |
dc.subject.keywordPlus | CAPACITY | - |
dc.subject.keywordPlus | DESIGNS | - |
dc.subject.keywordPlus | RADIO | - |
dc.subject.keywordAuthor | MIMO systems | - |
dc.subject.keywordAuthor | cognitive relay | - |
dc.subject.keywordAuthor | interference channels with a cognitive relay | - |
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