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DC Field | Value | Language |
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dc.citation.endPage | 2192 | - |
dc.citation.number | 5 | - |
dc.citation.startPage | 2180 | - |
dc.citation.title | IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | - |
dc.citation.volume | 12 | - |
dc.contributor.author | Yang, Hyun Jong | - |
dc.contributor.author | Shin, Won-Yong | - |
dc.contributor.author | Jung, Bang Chul | - |
dc.contributor.author | Paulraj, Arogyaswami | - |
dc.date.accessioned | 2023-12-22T04:06:38Z | - |
dc.date.available | 2023-12-22T04:06:38Z | - |
dc.date.created | 2015-01-16 | - |
dc.date.issued | 2013-05 | - |
dc.description.abstract | We consider the K-cell multiple-input multiple-output (MIMO) interfering multiple-access channel (IMAC) with time-invariant channel coefficients, where each cell consists of a base station (BS) with M antennas and N users having L antennas each. In this paper, we propose two opportunistic interference alignment (OIA) techniques utilizing multiple transmit antennas at each user: antenna selection-based OIA and singular value decomposition (SVD)-based OIA. Their performance is analyzed in terms of user scaling law required to achieve KS degrees-of-freedom (DoF), where S(<= M) denotes the number of simultaneously transmitting users per cell. We assume that each selected user transmits a single data stream at each time-slot. It is shown that the antenna selection-based OIA does not fundamentally change the user scaling condition if L is fixed, compared with the single-input multiple-output (SIMO) IMAC case, which is given by SNR(K-1)S, where SNR denotes the signal-to-noise ratio. In addition, we show that the SVD-based OIA can greatly reduce the user scaling condition to SNR(K-1)S-L+1 through optimizing a weight vector at each user. Simulation results validate the derived scaling laws of the proposed OIA techniques. The sum-rate performance of the proposed OIA techniques is compared with the conventional techniques in MIMO IMAC channels and it is shown that the proposed OIA techniques outperform the conventional techniques. | - |
dc.identifier.bibliographicCitation | IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, v.12, no.5, pp.2180 - 2192 | - |
dc.identifier.doi | 10.1109/TWC.2013.032113.120673 | - |
dc.identifier.issn | 1536-1276 | - |
dc.identifier.scopusid | 2-s2.0-84878630647 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/10170 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84878630647 | - |
dc.identifier.wosid | 000321199800020 | - |
dc.language | 영어 | - |
dc.publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | - |
dc.title | Opportunistic Interference Alignment for MIMO Interfering Multiple-Access Channels | - |
dc.type | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Degrees-of-freedom (DoF) | - |
dc.subject.keywordAuthor | opportunistic interference alignment (OIA) | - |
dc.subject.keywordAuthor | MIMO interfering multiple-access channel (MIMO-IMAC) | - |
dc.subject.keywordAuthor | transmit beamforming |
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dc.subject.keywordAuthor | user scheduling | - |
dc.subject.keywordPlus | PERFORMANCE ANALYSIS | - |
dc.subject.keywordPlus | FREEDOM | - |
dc.subject.keywordPlus | NETWORKS | - |
dc.subject.keywordPlus | MITIGATION | - |
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