Null-steering beamforming in uncertain environment
In this paper,we study a transmit null-steering beamforming problem for wireless sensor networks in uncertain communication environment.Given a desired receiver direction,the system requires to avoid the unknown eavesdroppers as well.In this case,we adjust both the sensors distribution and phase offsets such that beamforming is achieved at the desired direction,and meanwhile the communication of all the other directions is suppressed,which substantially reduces the risk of information theft by eavesdroppers.The Particle Swarm Optimization(PSO)algorithm is used to solve this constraint problem.
Null-steering beamforming particle swarm optimization wireless sensor networks constraint optimization
Jian Hou Zhiyun Lin
Beijing Aerospace Automatic Control Institute,Beijing,100854,P.R.China;National Key Laboratory of Sc College of Electrical Engineering,Zhejiang University,Hangzhou 310027,P.R.China;School of Electrical
国际会议
长沙
英文
853-857
2014-05-31（万方平台首次上网日期，不代表论文的发表时间）