...ocin.com豆丁网 相 继提出,这其中最典型的就是超宽带无线通信技术(Ultra Wideband ,UWB) [1] 和认知无线电技术(Cognitive Radio ,CR) [2～6] .
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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.
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