We analyzed the performance of spectrum sensing with energy detector in cognitive radio network.
分析了认知无线电网络中使用能量检测器进行频谱检测的性能。
In the third chapter, we studied cognitive radio network architecture and put forward a new network model with a spectrum sensing layer.
在第三章中，主要对认知无线电的网络架构进行了研究，提出了具有频谱检测层的网络模型。
Secondly, the uncertainty during the process of the spectrum detection is caused by the random of the channel in the Cognitive Radio network.
其次，在认知无线电网络中，由于信道的随机性，造成频谱检测过程中的不确定性。
In this paper, a novel multi-channel MAC protocol in cognitive radio network is proposed in chapter 3. System model, design flow and performance of this protocol are introduced and analyzed.
在此基础上，第三章，本论文提出了一种新的分布式认知无线电网络多信道MAC协议，并对该协议的系统模型、设计流程和性能做了详细的介绍和分析。
The view of cognition is being upgraded from cognitive radio to cognitive network and system. The cooperation becomes a powerful tool to improve the capability of cognition and lower the cost.
认知无线电技术已经向“网络与系统”的框架转变，为增强认知能力、降低认知成本，协作手段成为必然。
The view of cognition is being upgraded from cognitive radio to cognitive network and system. The cooperation becomes a powerful tool to improve the capability of cognition and lower the cost.
认知无线电技术已经向“网络与系统”的框架转变，为增强认知能力、降低认知成本，协作手段成为必然。
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