今天数传无线电网络仍然不是普遍的。
美国仅有的这两家卫星无线电网络公司的合并同时也是电台谈话节目明星团队的整合，它们的合并遭到其他广播公司的反对。
This combination of the only two satellite-radio networks in America (with their stable of talk-radio stars) is opposed by other broadcasters.
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。
We analyzed the performance of spectrum sensing with energy detector in cognitive radio network.
通过概率的表达式来评定类高斯噪声的准确性，从而可以对超宽带脉冲无线电网络的类高斯噪声性能进行分析。
This is used to assess the accuracy of the Gaussian approximation commonly used in the performance analysis of UWB impulse radio networks.
为了解决这个问题，将认知无线电网络分成单跳有簇头结构，通过簇头检测恶意节点。
In order to solve this security problem, cognitive radio networks are divided into single-hop clustering structure, and cluster-head is designed to detect malicious nodes.
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。
Secondly, the uncertainty during the process of the spectrum detection is caused by the random of the channel in the Cognitive Radio network.
支持多种通信制式和通信协议的软件无线电网络将是未来战术通信网的一个重要组成部分。
The software radio networks supporting multiple modes and protocols will be an important part in the future tactical communication networks.
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.
第五章对全文进行了总结，并指出了认知无线电网络中的功率控制算法设计未来的研究方向。
Chapter 5 summarizes this thesis and points out the future research direction and the next step of work for the design of power control algorithms in cognitive radio networks.
给出了具有频道负荷约束的专用移动无线电网络问题的整数线性规划，设计了求解特殊网络的具有频道负荷约束的频道分配问题的多项式时间算法。
An integer programming formulation for channel assignment problem with channel loading is presented and polynomial time algorithms are designed for some special radio networks in this paper.
但是过多的认知用户参与协同检测，会使整个认知无线电网络的灵敏度降低，同时也会造成巨大的系统开销。
However, too many cooperative users will make the whole sensing time unbearably long and consume huge system resource.
针对认知无线电网络中出现的模仿主用户攻击和自私行为攻击问题，提出一种基于簇的分布式认知无线电网络安全体系结构。
To solve the primary user emulation attack and selfish misbehaviors in cognitive radio networks, this paper presents cluster-based security architecture for distributed cognitive radio networks.
在认知无线电网络中，频谱检测作为一个核心问题受到了广泛的研究。
In cognitive radio networks, spectrum sensing as a core issue has been widely studied.
本文从认知无线电技术特性出发，对认知无线电网络中的功率控制算法进行了较为深入的研究。
From the perspective of characteristic in cognitive radio, this thesis develops a deep research on power control in cognitive radio networks.
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。
Simulation platform is also one of fundamental work of CR research. Excellent simulation platform can greatly enhance the effectiveness and correctness of the research.
针对认知无线电网络中多信道特性，提出了一种基于链路质量的多信道路由协议。
Considering the characteristics of cognitive radio networks, this paper proposes a new routing protocol based on link quality for multi-channel cognitive radio networks.
拨装备了雷达和光电的传感器、无线电网络和指挥控制中心。
The Command & Control Center will be located in Constanza and will provide alerts about possible threats, including drug trafficking, illegal immigration, and smuggling.
拨装备了雷达和光电的传感器、无线电网络和指挥控制中心。
The Command & Control Center will be located in Constanza and will provide alerts about possible threats, including drug trafficking, illegal immigration, and smuggling.
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