Exploiting Interactions of Multiple Interference for Cooperative Interference Alignment

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorLi, Zhaoen_US
dc.contributor.authorLi, Junen_US
dc.contributor.authorLiu, Yinghouen_US
dc.contributor.authorLiang, Xiujuanen_US
dc.contributor.authorShin, Kang G.en_US
dc.contributor.authorYan, Zhengen_US
dc.contributor.authorLi, Huien_US
dc.contributor.departmentDepartment of Communications and Networkingen
dc.contributor.groupauthorNetwork Security and Trusten
dc.contributor.organizationXidian Universityen_US
dc.contributor.organizationUniversity of Michigan, Ann Arboren_US
dc.date.accessioned2021-07-01T13:08:38Z
dc.date.available2021-07-01T13:08:38Z
dc.date.issued2021-11-01en_US
dc.descriptionPublisher Copyright: IEEE
dc.description.abstractWireless networks are usually deployed to cover more overlapping areas, experiencing severe interferences and hence making interference management essential for their viability. Interference alignment (IA) is an effective way of interference management and has thus received significant attention. With IA, at least one degree-of-freedom (DoF) should be used to place the aligned interferences. However, when multiple interferences are from one identical transmitter and to a common destination, IA is not applicable under a one-DoF cost constraint. If these interfering signals are aligned in the same direction at the interfered receiver, they will also overlap with each other at their intended receiver, thus becoming indistinguishable. Moreover, IA is realized by adjusting the spatial feature of disturbance, hence incurring co-channel interference to the interfering transmission-pair's own communication. To solve this problem, we propose cooperative IA. Instead of adjusting the spatial characteristics of all interferences, we aim to achieve IA by adjusting interferences' strength along with one or none interference's signature, based on the interactions among multiple wireless disturbances. We propose two cooperative IA schemes: cooperative IA with space-power adjustment and cooperative IA with power adjustment. With the first method, the overall effect of all interferences is aligned in the orthogonal direction with respect to the desired signal at the interfered receiver. This method modifies the direction of one interference with a properly designed precoding vector and the strength of all interferences via power allocation. Under the second scheme, the strength of all interfering signals is modified so that the overall effect of multiple interferences is orthogonal to the desired transmission while guaranteeing the orthogonality among the interfering signals at their intended receiver. Our theoretical analysis and in-depth simulation have shown that the proposed schemes can effectively manage multiple interferences from an identical source while achieving good performance of the interfering transmission-pair.en
dc.description.versionPeer revieweden
dc.format.extent14
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationLi, Z, Li, J, Liu, Y, Liang, X, Shin, K G, Yan, Z & Li, H 2021, ' Exploiting Interactions of Multiple Interference for Cooperative Interference Alignment ', IEEE Transactions on Wireless Communications, vol. 20, no. 11, pp. 7072-7085 . https://doi.org/10.1109/TWC.2021.3080584en
dc.identifier.doi10.1109/TWC.2021.3080584en_US
dc.identifier.issn1536-1276
dc.identifier.otherPURE UUID: b8cff39b-fe59-42af-a512-4c942a48d4d4en_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/b8cff39b-fe59-42af-a512-4c942a48d4d4en_US
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85107175093&partnerID=8YFLogxKen_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/64997820/ELEC_Li_etal_Exploiting_Interactions_of_Multiple_Interferences_IEEE_TWC_2021_acceptedauthormanuscript.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/108635
dc.identifier.urnURN:NBN:fi:aalto-202107017889
dc.language.isoenen
dc.publisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
dc.relation.ispartofseriesIEEE Transactions on Wireless Communicationsen
dc.rightsopenAccessen
dc.subject.keywordinterference alignmenten_US
dc.subject.keywordinterference managementen_US
dc.subject.keywordpower allocationen_US
dc.subject.keywordprecodingen_US
dc.titleExploiting Interactions of Multiple Interference for Cooperative Interference Alignmenten
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionacceptedVersion

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