{"title":"Threshold-based opportunistic zero-forcing beamforming for two-user downlink systems with outage constraints","authors":"Dae-Kyo Jeong, Dongwoo Kim","doi":"10.1109/ATC.2015.7388418","DOIUrl":null,"url":null,"abstract":"In this paper, we present the exact outage analysis of the two-user downlink systems using the threshold-based opportunistic zero-forcing beamforming (TBO-ZFB) with a second mobile station's outage constraint. TBO-ZFB dynamically switches between a beamforming weight vector and a zero-forcing beamforming (ZFB) weight vector (using linear precoding for first mobile station (MS)) by comparing the values between a second MS's signal-to-noise ratio (SNR) and a predetermined threshold. We provide that the threshold is satisfied with the second MS's outage constraint. Numerical results show that the outage performance of first MS using TBO-ZFB is better than the ZFB and the threshold is satisfied with the second MS's outage constraints.","PeriodicalId":142783,"journal":{"name":"2015 International Conference on Advanced Technologies for Communications (ATC)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2015 International Conference on Advanced Technologies for Communications (ATC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ATC.2015.7388418","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
In this paper, we present the exact outage analysis of the two-user downlink systems using the threshold-based opportunistic zero-forcing beamforming (TBO-ZFB) with a second mobile station's outage constraint. TBO-ZFB dynamically switches between a beamforming weight vector and a zero-forcing beamforming (ZFB) weight vector (using linear precoding for first mobile station (MS)) by comparing the values between a second MS's signal-to-noise ratio (SNR) and a predetermined threshold. We provide that the threshold is satisfied with the second MS's outage constraint. Numerical results show that the outage performance of first MS using TBO-ZFB is better than the ZFB and the threshold is satisfied with the second MS's outage constraints.
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