中文说明：认知无线电系统的代码是给最后页研究吸引了很多在过去 10 年的兴趣。认知无线电出生作为一种范式和从那时起这个想法已经从技术的贡献不同概念层次下的学科。自从然后改进处理能力有支持于现有的成就，甚至可能使其中一些来自对市场的研究领域。认知无线电意味着一场革命，甚至要求在当前的业务模式的变化改变立法和需要最先进的基础设施级别的更改技术。频谱感知是认知无线电系统的最重要部分也许因为它是块设计用来探测信号在空气的存在。本论文旨在探讨什么认知无线电系统的要求，侧重于频谱感知设备。在不同的正交频分下运行的两个语音应用程序评选分复用 （OFDM） 的计划。这些都是 WiFi 和无线麦克风。然后，循环平稳频谱感知技术是研究和应用来定义一种能够装置在一个嘈杂的环境中检测 OFDM 信号。其中一个最有趣的方法，根据复杂性和计算要求，称为 FAM 开发。研究显示性能和频率同步结果，包括发展偏移估计的盲同步技术。
English Description：
CODE IS GIVE AT LAST PAGES Research on cognitive radio systems has attracted much interest in the last 10 years. Cognitive radio is born as a paradigm and since then the idea has seen contribution from technical disciplines under different conceptual layers. Since then improvements on processing capabilities have supported the current achievements and even made possible to move some of them from the research arena to markets. Cognitive radio implies a revolution that is even asking for changes in current business models, changes at the infrastructure levels, changes in legislation and requiring state of the art technology. Spectrum sensing is maybe the most important part of the cognitive radio system since it is the block designed to detect signal presence on the air. This thesis investigates what cognitive radio systems require, focusing on the spectrum sensing