自适应有源天线垂直扇区化方法研究
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摘要
有源天线通过引入垂直扇区化技术,将扇区在垂直方向上进行分裂,由于分裂后波束的增加对内、外扇区之间以及邻小区存在严重干扰,使得基于传统固定分配各天线参数的方法对系统吞吐量的提升十分有限。针对该问题,通过在垂直分裂中引入基于聚类思想的用户分簇方法,提出了一种基于信道增益的自适应有源天线垂直扇区化方法。该方法通过将波束对准中心用户,显著减少对邻扇区的干扰。与传统分配方案相比,本方案中的用户平均吞吐量提高了约10%。
The introduction of vertical sectorization technology in active antenna systems makes the sectors splitting in the vertical direction. Due to the increase of beams in the splitting,there is a serious interference between inner and outer sectors and adjacent cells. The traditional fixed allocation method for antenna parameters limits the promotion of system throughput. To solve this problem,a channel-gainbased adaptive vertical sectorization method in active antenna systems is proposed. This method introduces the user clustering idea in vertical sector splitting. The scheme decreases the adjacent cell interference through putting beams directed at the center users,and the average user throughput increases by about 10% compared with the traditional allocation scheme.
The introduction of vertical sectorization technology in active antenna systems makes the sectors splitting in the vertical direction. Due to the increase of beams in the splitting,there is a serious interference between inner and outer sectors and adjacent cells. The traditional fixed allocation method for antenna parameters limits the promotion of system throughput. To solve this problem,a channel-gainbased adaptive vertical sectorization method in active antenna systems is proposed. This method introduces the user clustering idea in vertical sector splitting. The scheme decreases the adjacent cell interference through putting beams directed at the center users,and the average user throughput increases by about 10% compared with the traditional allocation scheme.
引文
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[7]Lee C S,Lee M C,Huang C J,et al.Sectorizationwith beam pattern design using 3D beamformingtechniques[C]//Signal and Information ProcessingAs-sociation Summit and Conference.IEEE,2013:1-5.
[8]Razavizadeh S M,Ahn M,Lee I.Th-ree-Dimen-sional Beamforming:A new enabling technology for5G wireless networks[J].IEEE Signal ProcessingMagazine,2014,31(6):94-101.
[9]张亮,杨馨,谭国平.一种新的基于3D有源天线组网的干扰协调方案[J].电子设计工程,2014,22(9):137-141.
[10]赵季红,王伟华,曲桦.基于自适应算法的三维波束赋形技术[J].北京邮电大学学报,2014,37(4):88-92.
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[17]王千,王成,冯振元,等.K-means聚类算法研究综述[J].电子设计工程,2012,20(7):21-24.
[18]Halbauer H,Saur S,Koppenborg J,et al.Interfer-ence avoidance with dyna-mic vertical beamsteer-ing in real depl-oyments[C]//Wireless Communica-tions and NETWORKING Conference Wo-rk-shops.IEEE,2012:294-299.
[19]Koppenborg J,Halbauer H,Saur S,et al.3D beam-forming trials with an acti-ve antenna array[C]//In-ternational Itg Workshop on Smart Antennas.IEEE,2012:110-114.