Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 최승원 | - |
dc.date.accessioned | 2018-03-14T07:08:20Z | - |
dc.date.available | 2018-03-14T07:08:20Z | - |
dc.date.issued | 2014-01 | - |
dc.identifier.citation | WIRELESS PERSONAL COMMUNICATIONS; JAN 2014, 74, 2, p789-p802 | en_US |
dc.identifier.issn | 0929-6212 | - |
dc.identifier.uri | http://link.springer.com/article/10.1007%2Fs11277-013-1321-7 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11754/46730 | - |
dc.description.abstract | This letter presents a novel method of user selection in a downlink multi-user multiple input multiple output (MU-MIMO) system employing the precoding procedures of zero forcing or block diagonalization (BD). The proposed technique utilizes the cross-entropy method (CEM) in order to maintain a performance level comparable to that of the full search (FS) method with reasonable complexity. With the CEM, the proposed system can select multiple users at once instead of selecting a single user at each step. From various computer simulations, it has been verified that the proposed method exhibits nearly 98 % of the sum-rate compared to the FS method, which implies that the proposed method far outperforms conventional methods such as semi-orthogonal user selection (SUS) or the capacity-based suboptimal user selection (CBSUS) algorithm. Compared to CBSUS, the proposed technique enhances the sum-rate by approximately 1.1 bps/Hz with about half the complexity when each user is equipped with two receiving antennas. In the case where each user is equipped with a single antenna, the proposed method outperforms the method of SUS by about 0.3 bps/Hz, at the expense of a complexity increase of times. | en_US |
dc.description.sponsorship | This research was supported by the MSIP (Ministry of Science, ICT & Future Planning), Korea, under the ITRC (Information Technology Research Center) support program (NIPA-2013- H0301-13-1001) supervised by the NIPA (National IT Industry Promotion Agency). | en_US |
dc.language.iso | en | en_US |
dc.publisher | Springer | en_US |
dc.subject | MU-MIMO | en_US |
dc.subject | User selection | en_US |
dc.subject | Cross entropy method | en_US |
dc.subject | Sum-rate | en_US |
dc.subject | Complexity | en_US |
dc.title | User Selection Method Adopting Cross-Entropy Method for a Downlink Multiuser MIMO System | en_US |
dc.type | Article | en_US |
dc.relation.volume | 74 | - |
dc.identifier.doi | 10.1007/s11277-013-1321-7 | - |
dc.relation.page | 789-802 | - |
dc.relation.journal | WIRELESS PERSONAL COMMUNICATIONS | - |
dc.contributor.googleauthor | Kim, Kyunghoon | - |
dc.contributor.googleauthor | Yang, Hyunwook | - |
dc.contributor.googleauthor | Choi, Seungwon | - |
dc.relation.code | 2014040867 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF ENGINEERING[S] | - |
dc.sector.department | DEPARTMENT OF ELECTRONIC ENGINEERING | - |
dc.identifier.pid | choiseungwon | - |
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