摘要
无线传感器网络由大量传感器网络的节点组成,以无线通信技术为核心,是当前国际上备受关注的多学科高度交叉的新兴前沿研究热点之一。针对无线传感器网络汇聚节点与数据处理中心之间的无线数据传输,本文提出一种新的信道估计方法,汇聚节点发送特定的导频训练序列,该训练序列具有理想的信号峰值,该算法可有效地消除汇聚节点与数据处理中心在数据传输过程中产生的码间干扰。仿真实验表明该方法收敛快、误码率低、有良好的信道估计性能。
Wireless sensor network is composed by huge amount of nodes with ability of wireless communication. As a hot research area, it＇s multi-discipline. In this paper, a novel channel estimation algorithm was proposed by using special pilot to obtain a desirable crest-factor of the transmitted training signal and to eliminate the influence of ISI on the channel estimation. Simulation results show that the proposed method has good performance with low SER and fast convergence.
出处
《电子测量技术》
2007年第2期135-137,161,共4页
Electronic Measurement Technology
关键词
无线传感器网络
信道估计
特定导频
wireless sensor network
channel estimatiom special pilot
