A New Analytical Model for Multi-Hop Cognitive Radio Networks
A New Analytical Model for Multi-Hop Cognitive Radio Networks
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DOI：
10.1109/twc.2012.030812.111106
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发表时间：
2012-05-01
影响因子：
10.4
通讯作者：
Al-Dubai, Ahmed Y.
中科院分区：
文献类型：
--
作者：
Wu, Yulei;Min, Geyong;Al-Dubai, Ahmed Y.
认知无线电（CR）是一种新兴的技术，通过允许未授权用户使用未充分利用的频谱来提高通信资源的利用率。本文提出了一种新的分析性能模型来评估多跳CR网络的QoS。在通过大量的仿真实验验证其准确性后，分析模型被采用作为一个具有成本效益的工具来调查主用户的活动对网络性能的影响。此外，该模型可用于研究使用未充分利用的频谱的策略，以最大限度地提高整体资源利用率和网络性能。
The cognitive radio (CR) is an emerging technique for increasing the utilisation of communication resources by allowing the unlicensed users to employ the under-utilised spectrum. In this paper, a new analytical performance model is developed to evaluate the QoS of multi-hop CR networks. After validating its accuracy through extensive simulation experiments, the analytical model is adopted as a cost-effective tool to investigate the effects of the primary users' activities on the network performance. Moreover, the model can be used to study the strategy of employing under-utilised spectra so as to maximise the overall resource utilisation and network performance.