LIFETIME MAXIMIZATION FOR BEAMFORMING APPLICATIONS IN WIRELESS SENSOR NETWORKS

被引：0
|
作者：
Bejar, Benjamin [1 ]
Zazo, Santiago [1 ]
Palomar, Daniel P. [2 ]
机构：
[1] Univ Politecn Madrid, ETSI Telecomunicac, Madrid 28080, Spain
[2] Hong Kong Univ Sci & Technol, ECE Dept, Clear Water Bay, Hong Kong, Peoples R China
来源：
2012 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING (ICASSP) | 2012年
关键词：
Energy-efficiency; consensus; beamforming; NODES;
D O I：
暂无
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
Energy efficiency is a major design issue in the context of Wireless Sensor Networks (WSN). If data is to be sent to a far-away base station, collaborative beamforming by the sensors may help to distribute the load among the nodes and reduce fast battery depletion. However, collaborative beamforming techniques are far from optimality and in many cases may be wasting more power than required. In this contribution we consider the issue of energy efficiency in beamforming applications. Using a convex optimization framework, we propose the design of a virtual beamformer that maximizes the network's lifetime while satisfying a pre-specified Quality of Service (QoS) requirement. A distributed consensus-based algorithm for the computation of the optimal beamformer is also provided.
引用
收藏
页码：2849 / 2852
页数：4
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