《认知无线电在通信中的应用批注版》.doc

中国地质大学(武汉)毕业论文(设计) PAGE  PAGE 23 原创性声明 本人呈交的学位论文，是在导师的指导下，独立进行研究工作所取得的成果，所有数据、图片资料真实可靠。尽我所知，除文中已经注明引用的内容外，本学位论文的研究成果不包含他人享有著作权的内容。对本论文所涉及的研究工作做出贡献的其他个人和集体，均已在文中以明确的方式标明。本学位论文的知识产权归属于培养单位。 本人签名： 日期： 摘 要 随着各种无线通信新技术和应用不断出现，频谱资源变得越来越紧张，使用认知无线电技术将实现频率资源的动态使用，有效解决目前严重的频谱资源紧张问题，提高无线电频谱的使用效率。认知无线电技术越来越受到全球广泛的关注，世界各国均开始研究应用认知无线电技术解决频谱使用紧张问题。 本文简要分析了认知无线电技术的特点、发展趋势和对全球通信行业的影响。讨论了本文简要分析了认知无线电技术的特点、发展趋势和对全球通信行业的影响。认知无线电通信的一些关键技术。在此基础上探讨了认知无线电技术未来发展值得关注的热点问题。分析了认知无线电系统当中需要重点解决的关键技术，包括频谱感知，动态频谱管理以及信道估计等，并研究与探讨了关键技术的多种典型解决方案，对其性能进行分析与评价，最后对未来应用需要解决的关键问题与热点技术的结合进行了总结与展望。 关键词: 认知无线电 频谱 通信 频谱感知  ABSTRACT With a variety of wireless communication technology and applications continue to appear, spectrum resource becomes more and more intense, the use of cognitive radio technology will achieve the dynamic use of frequency resources, effectively address the current severe spectrum resource, improve the efficiency of the use of the radio spectrum. Cognitive radio technology has been more and more widespread concern around the world, all countries in the world began to study the application of cognitive radio technology to solve the problem of spectrum using tension. This paper analyzes the cognitive radio technology characteristics, development trend and effect on the global communications industry. Discussed in this article briefly analyzes the characteristics of cognitive radio technology, development trend and effect on the global communications industry. Some key technologies in cognitive radio. On the basis of the cognitive radio technology development in the future is worth attention hot topic. Analysis of the cognitive radio system need to focus on solving key techniques, including the spectrum sensing, dynamic spectrum management and channel estimation, and studies and discusses the key technology of several typical solutions, an analysis is made on the performance and evaluation, finally the future application of key problems