Optimal Rate Allocation for Multi-Sensor Distributed Estimation

摘要：

This paper studies the optimal rate allocation (ORA) problem for multi-sensor distributed estimation in wireless sensor networks (WSNs) where a total bit rate constraint is imposed. We adopt the mean-square error (MSE) as the the performance criterion of the designed distributed estimator, and search for the optimal rate allocation scheme through minimizing the upper bound of the designed estimator MSE. We consider the two-sensor case in WSN, and obtain a optimal rate allocation scheme, where the optimal bit rate of each sensor is basically determined by the local signal-to-noise ratio (SNR). Simulation results show that the optimal rate allocation scheme improves evidently on the simple uniform rate allocation scheme.

关键词： Wireless sensor networks (WSNs) Optimal rate allocation (ORA) Mean-square error (MSE) Signal-tonoise ratio (SNR)

作者: Junyong Chen

作者单位: College of Automation Science and Engineering, South China University of Technology, Guangzhou 510640, China

会议类型: 国际会议

会议名称: 2009年中国控制与决策会议(2009 Chinese Control and Decision Conference)

会议地点: 广西桂林

会议语种:英文

页码: 1009-1014

在线出版日期: 2009-06-17（万方平台首次上网日期，不代表论文的发表时间）