无线传感器网络分布式数字信号处理的探讨

摘要

无线传感器有几个缺点,如发射距离短,计算处理能力差,以及发射功率低等.该文以协作信号处理概念为理论基础,讨论设计高效传感器网络.设想有一个由多个传感器节点组成的网络,每个节点与一个处理器对应.通过采用一种适当的协作运算法则和通信设计,把传感器当作分布式数字信号处理器( DDSP,Distributed Digital Signal Processor)使用,将DDSP用于快速傅里叶变换,使无线传感器网络性能得到提高.%Wireless sensor has several disadvantages such as the short transmission distance, poor computing capability and low transmitting power. In this paper, the collaborative signal processing con-cepts as the theoretical foundation to discuss the design of a high performance sensor network. Imagine having a plurality of sensor nodes, each node with a corresponding processor. By adopting an appropriate cooperative algorithm and design for communication, the sensor as a distributed digital signal processor (DDSP - Distributed Digital Signal Processor) ,DDSP for fast Fourier transformation, makes the perform-ance of wireless sensor network is improved.