基于认知无线电的超宽带信号频谱检测研究

发布时间：2018-05-16 05:15

本文选题：超宽带 + 认知无线电　；参考：《兰州理工大学》2017年硕士论文

【摘要】：认知无线电作为一种新兴无线通信技术,有效缓解频谱频谱分配与利用之间的矛盾,得到了业界的普遍认可。超宽带系统具有传输速率高、功耗低、抗干扰能力强、传输安全性高等特点在通信中得到广泛应用,频谱感知技术是决定认知无线电能否实现的核心技术。因此,研究基于认知无线电的超宽带信号频谱检测有着重要的现实意义。本文主要研究三方面内容:认知超宽带无线电的原理及关键技术;基于信号特征的无线频谱检测技术;基于主用户信道模式的频谱检测感知算法。具体研究内容如下:1.把认知无线电的思想引入到超宽带信号的检测问题中,系统地研究了CR、UWB、CUWB技术的概念、模型、关键技术、发展现状及发展方向。2.对现有的较为成熟的5种频谱检测技术进行对比研究,分析了各自的优缺点。针对本地频谱检测问题,总结了检测方法。3.研究提出了一种基于主用户占用模型的单用户检测感知算法,并进行了性能分析,验证了该算法具有较高的检测性能。4.研究了基于超宽带技术的军队训练负荷监控系统的方案设计,设计了UWB负荷监控系统结构和各模块功能。
[Abstract]:Cognitive radio, as a new wireless communication technology, effectively alleviates the contradiction between spectrum allocation and utilization. Ultra-wideband (UWB) systems have been widely used in communication because of their high transmission rate, low power consumption, strong anti-interference ability and high transmission security. Spectrum sensing technology is the core technology that determines whether cognitive radio can be realized or not. Therefore, the study of UWB signal spectrum detection based on cognitive radio has important practical significance. This paper focuses on three aspects: the principle and key technologies of cognitive UWB radio; the wireless spectrum detection technology based on signal characteristics; and the spectrum detection sensing algorithm based on primary user channel mode. The specific contents of the study are as follows: 1. This paper introduces the idea of cognitive radio into UWB signal detection, and systematically studies the concept, model, key technology, development status and development direction of CRU UWBU CUWB technology. This paper compares and studies five kinds of spectrum detection techniques, and analyzes their advantages and disadvantages. Aiming at the problem of local spectrum detection, this paper summarizes the detection method. 3. 3. A single user detection sensing algorithm based on the primary user occupancy model is proposed, and the performance analysis is carried out to verify that the algorithm has a high detection performance. 4. This paper studies the scheme design of military training load monitoring system based on UWB technology, and designs the structure of UWB load monitoring system and the function of each module.
【学位授予单位】：兰州理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN925;TN925

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