首先介绍了正交频分复用的基本原理和认知无线电技术。
Initially, fundamentals of OFDM and technologies of cognitive radio are introduced in this paper.
OFDM技术将成为未来无线通信中的核心技术，在认知无线电、4G移动通信和无线宽带接入等领域得到广泛的应用。
OFDM technology will become the core technology for wireless communication in the future, OFDM will be widely used in cognition radio, in the 4G mobile communication and the wireless broadband access.
本文首先综述了认知无线电的基本原理，包括其定义、概念模型、主要功能和关键技术。
Firstly, this dissertation summarizes fundamental notions of cognitive radios, including its definition, concept model, main functions and important technologies.
频谱感知是实现认知无线电技术的前提和基础。
Spectrum sensing is one of the prerequisite and basis of realize cognitive radio technology.
频谱感知技术已经成为认知无线电技术的基础和前提。
Spectrum sensing technology has become the basis and premise of Cognitive Radio technology.
形成的资源描述体系和管理结构可以成为研究认知无线电资源管理技术的理论概念基础和借鉴支持。
The resources description system and the management structure submitted will become the theory concept foundation of the cr spectrum resources management technology.
介绍了认知无线电系统中主要的频谱检测技术，对它们的基本原理、实现方法和优缺点等进行了详细分析和讨论。
The important spectrum sensing technologies of CR are introduced, their basic principles, methods and advantages and disadvantages to achieve such a detailed analysis and discussion.
频谱感知技术是认知无线电的关键技术，是实现认知无线电的前提和先决条件。
Spectrum sensing technology is the key integrant in Cognitive Radio, is the basis and precondition for implementation of Cognitive Radio.
频谱感知技术是认知无线电的关键技术，是实现认知无线电的前提和先决条件。
Spectrum sensing technology is the key integrant in Cognitive Radio, is the basis and precondition for implementation of Cognitive Radio.
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