Krylov subspace estimation and dynamic channel choice of industrial wireless network

Computer Engineering and Applications ›› 2015, Vol. 51 ›› Issue (11): 62-66.

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Krylov subspace estimation and dynamic channel choice of industrial wireless network

DENG Changjian1，2, CHEN Dongyi1, ZHANG Heng3, HU Hongyang1, LING Jianzhong1

1.School of Automation Engineering, University of Electronic Science and Technology, Chengdu 611731, China
2.Department of Control Engineering, Chengdu University of Information Technology, Chengdu 610225, China
3.School of Computer and Information Technology, Southwest University, Chongqing 400700, China

Online:2015-06-01 Published:2015-06-12

工业无线网络Krylov子空间估计与动态信道选择

邓昌建1，2，陈东义1，张衡3，胡红阳1，凌建中1

1.电子科技大学自动化工程学院，成都 611731
2.成都信息工程学院控制工程系，成都 610225
3.西南大学计算机与信息技术学院，重庆 400700

Abstract

Abstract: In industrial wireless sensor networks, the performance of channel should be estimated and the operating channel should be selected to ensure reliability of communication. Based on analysis of industrial noise, the model of frequency selective receiving channel of Krylov subspace is established, and the time-space performance of receiving signal is analyzed. According to the analysis of channel estimation, a method of dynamic channel selection which judges the quality of channel based on time delay is introduced. Experimental results show it can increase 2 meters of communication distance, and can reduce the packet loss rate 30% or so.

Key words: subspace, noise model, channel estimation, active communication distance, channel selection

摘要： 在工业无线传感网络中，信道性能要进行估计，工作信道要进行选择，以保证通信的可靠性。以分析工业环境噪声为基础，建立Krylov子空间频率选择接收信道模型，并分析信道中接收信号的时空性能。根据信道估计分析，提出使用时延判断信道的优劣的动态信道选择方法。实验数据表明，该方法能提高有效通讯距离2 m左右，减少丢包率30%以上。

关键词: 子空间, 噪声模型, 信道估计, 有效通信距离, 信道选择

DENG Changjian1，2, CHEN Dongyi1, ZHANG Heng3, HU Hongyang1, LING Jianzhong1. Krylov subspace estimation and dynamic channel choice of industrial wireless network[J]. Computer Engineering and Applications, 2015, 51(11): 62-66.

邓昌建1，2，陈东义1，张衡3，胡红阳1，凌建中1. 工业无线网络Krylov子空间估计与动态信道选择[J]. 计算机工程与应用, 2015, 51(11): 62-66.

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Krylov subspace estimation and dynamic channel choice of industrial wireless network

工业无线网络Krylov子空间估计与动态信道选择

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