The thesis mainly focuses on spectrum sensing and dynamic spectrum access of cognitive radio system.
频谱感知能力是认知无线电通信的一个重要前提，也是其核心功能之一。
A new approach called dynamic spectrum access (DSA) promises to alleviate the problem of spectrum shortage.
新兴的动态频谱接入(DSA)技术可以解决频谱稀缺问题。
In this paper, dynamic spectrum access and opportunistic spectrum access have been studied, which are the two methods of spectrum usage in the authorized spectrum band.
研究了授权频段的两种频谱利用方法：动态频谱接入和基于动态频谱接入模型之一的机会频谱接入。
In our scheme, unlicensed users are allowed to adaptively select available spectrum, adopt dynamic spectrum access technology, improving spectrum utilization effectively.
该方案允许未授权用户自适应地选取可用带宽，实现了动态频谱接入，有效地提高了频谱利用率。
Cognitive radio can effectively improve the utilization of spectrum through dynamic spectrum access technology, in which the channel selection affects directly the performance of the system.
认知无线电可以通过动态频谱接入技术来有效的提高频谱的利用率，而在动态频谱接入中信道选择策略的优劣直接影响着系统的性能。
Cognitive radio can effectively improve the utilization of spectrum through dynamic spectrum access technology, in which the channel selection affects directly the performance of the system.
认知无线电可以通过动态频谱接入技术来有效的提高频谱的利用率，而在动态频谱接入中信道选择策略的优劣直接影响着系统的性能。
应用推荐