四川大学学报（工程科学版）2017，Vol.49Issue(6)：135-141,7.DOI:10.15961/j.jsuese.201601429
基于用户分簇的物理层增强安全多播算法
Physical Layer Enhanced Secure Multicast Algorithm Based on User Clustering
摘要
Abstract
Physical-layer security has become a critical technique in current wireless networks.The existing conventional physical layer security techniques,e.g.artificial-noise-aided transmit beamforming,do not apply well to multicast transmission from large multicast user and eavesdropper user numbers.To address this problem,an enhanced secure multicast algorithm based on user clustering scheme was proposed.Firstly,the multicast users with close channel vectors were divided into a cluster and different clusters were served on different channels.Secondly,a heuristic joint power allocation and beamforming design algorithm based on this user clustering scheme were proposed to maximize the globally achievable secure multicast rate.Finally,to reduce the overall computation complexity,the new searching method was put forward to solve power allocation and beamforming design jointly.Simulation results showed that the enhanced secure multicast algorithm can support a much higher secure transmission rate than conventional secure multicast (CSM) schemes,and the proposed joint power allocation and beam forming design algorithm outperform existing CSM schemes with the ergodic searching method greatly in terms of computation complexity.关键词
物理层安全/多播/波束赋形/人工噪声Key words
physical-layer security/multicast/beamforming/artificial noise分类
信息技术与安全科学引用本文复制引用
陈雷..基于用户分簇的物理层增强安全多播算法[J].四川大学学报（工程科学版）,2017,49(6):135-141,7.基金项目
辽宁省博士启动金资助项目(201601083) （201601083）
辽宁省教育科学“十三五”规划2017年度项目资助(JG17DB537) （JG17DB537）
中国刑事警察学院院级项目资助 （）
国家自然科学基金资助项目(61172058) （61172058）
