摘要
当前对Wi-Fi网络节点故障定位方法使用正交频分复用技术,采用直调直检的方法将Wi-Fi节点网络之间高速数据信号转换为分布式载波信号,实现节点故障节点检测,该方法很容易导致相邻节点信道间频谱主瓣重叠,在非常态干扰下定位不准。提出一种基于OFDM技术的Wi-Fi故障节点定位方法,采用同步算法来减小子载波间的正交性抑制,采用信息素更新策略实现在非常态干扰下对故障节点的定位检测。仿真实验表明,该方法能有效定位Wi-Fi故障节点,网络传输误码率降低明显,大幅提高网络传输效率,有效提高了Wi-Fi网络可靠性和应用性。
The current fault nodes location methods of Wi-Fi network use orthogonal frequency division multiplexing tech-nique, the method of straight straightening is used. The high speed data signals between the Wi-Fi network nodes is added with distributed carrier signal, the node fault detection is realized. This method causes the neighboring nodes to inter chan-nel spectral main lobe overlap, and the fault nodes localization is not accurate. A Wi-Fi fault nodes localization method was proposed based on OFDM technology. The information update strategy was designed to realize the detection and location of fault nodes. Simulation results show that, the method can effectively locate Wi-Fi faulty nodes, and the network transmis-sion error rate reduces obviously. The efficiency of network transmission is improved. The reliability of Wi-Fi network is improved effectively.
出处
《科技通报》
北大核心
2014年第8期116-118,共3页
Bulletin of Science and Technology
关键词
WI-FI网络
干扰
故障节点
定位算法
Wi-Fi network interference fault node localization algorithm
