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Received:February 04, 2013 Revised:March 18, 2013
Received:February 04, 2013 Revised:March 18, 2013
中文摘要: 在WRAN中, 考虑实际授权信道的使用状况, 并且权衡信道利用效率和系统资源利用效率, 设计一种认知无线电协作频谱感知机制. 在不同使用特征的授权信道中, 该机制都可以求解出最优感知参数组合, 使感知效率最大. 分析了信道利用效率和系统资源利用效率的选择性加权对感知效率的影响. 当系统的抗干扰门限足够大时, 可以明显提高用于传输数据的时间.
Abstract:In Wireless Regional Area Network, considering the actual licensed channel usage and weighting the channel utilization efficiency and system resources efficiency, a parameters optimization algorithm in cognitive radio is proposed. Simulation shows that the proposed algorithm can figure out the optimal sensing parameters for each licensed channel and maximize the sensing efficiency. Analyzed the channel utilization efficiency and selectivity of system resource utilization efficiency weighted affect cognitive efficiency. Moreover, the transmission duration can be improved significantly, if the anti-interference threshold of the system is large enough.
keywords: cognitive radio cooperative spectrum sensing sensing efficiency channel available probability
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王晓迪,惠晓威,吴立涛.WRAN中的协作频谱感知参数优化.计算机系统应用,2013,22(9):206-209
WANG Xiao-Di,HUI Xiao-Wei,WU Li-Tao.Parameters Optimization for Cooperative Spectrum Sensing in Wireless Regional Area Network.COMPUTER SYSTEMS APPLICATIONS,2013,22(9):206-209
王晓迪,惠晓威,吴立涛.WRAN中的协作频谱感知参数优化.计算机系统应用,2013,22(9):206-209
WANG Xiao-Di,HUI Xiao-Wei,WU Li-Tao.Parameters Optimization for Cooperative Spectrum Sensing in Wireless Regional Area Network.COMPUTER SYSTEMS APPLICATIONS,2013,22(9):206-209
