电子学报2016，Vol.44Issue(8)：1947-1955,9.DOI:10.3969/j.issn.0372-2112.2016.08.025
基于分簇门限反馈的机会波束成形算法研究
OrthogonaI Random Beamforming Based on CIustering and Feedback ThreshoId
摘要
Abstract
This paper considers how to obtain the maximum sum-rates by using the orthogonal random beamforming (ORBF)technique under the constraint on the average number of feedback users in the context of facing inter-beam interfer-ence scenarios.Aiming to solve this problem,a novel ORBF algorithm based on clustering and feedback threshold is pro-posed.The users are divided into multiple clusters according to their SNRs.The corresponding feedback threshold in each cluster is calculated by the tool of extreme value theory.Finally,the new ORBF algorithm is constructed based on clustering and multiple thresholds.We make some theoretical analysis on the algorithm and derive the upper bound of sum-rates loss;the scaling law of multiuser diversity gain is also exhibited.Simulation results not only verify the validity of our analysis but also show that,when compared with the classical ORBF technique,the proposed algorithm can considerably reduce the feed-back load with a good sum-rates performance.关键词
机会波束成形/波束间干扰/分簇/反馈门限Key words
random beamforming/inter-beam interference/clustering/feedback threshold分类
信息技术与安全科学引用本文复制引用
陈兴旺,许小东..基于分簇门限反馈的机会波束成形算法研究[J].电子学报,2016,44(8):1947-1955,9.基金项目
国家863高技术发展研究计划（No．2012AA01A502）；国家自然科学基金 （）
