To predict the iPhone's performance on a network, Apple engineers bought nearly a dozen server-sized radio-frequency simulators for millions of dollars apiece.
为了准确地评估iPhone在无线网络中的灵敏度等参数，苹果的工程师至少花费了数百万美金购买了几十种测定参数的设备和仿真系统。
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 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。
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。
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