Since the beginning of the CR research, it has been aimed to dynamically and intelligently utilize the idle resources in authorized spectrum.

认知无线电的研究从开始就是以动态、智能地利用授权频谱中的空闲频带以提高无线网络的频谱利用率为目的。

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Simulation platform is also one of fundamental work of CR research. Excellent simulation platform can greatly enhance the effectiveness and correctness of the research.

仿真平台设计也是认知无线电网络研究的基础性工作之一，优秀的仿真平台可大大提高研究的有效性和正确性。

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This thesis mainly focuses on design and implement of baseband module of CR experimental system and research on reduction of PAPR.

本文的主要工作是CR实验系统的基带模块的设计与实现以及降低峰均比技术的研究。

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The rankings, performed for CR by the the nonprofit accreditation group NCQA, uses survey research to measure member satisfaction.

FORBES: Consumer Reports Ranks HMOs--Not Helpful If You Live In Wrong State