| 认知无线电中基于改进脉冲耦合神经网络的频谱分配算法 |
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| 引用本文： | 张波,黄本雄,朱江,徐奎.认知无线电中基于改进脉冲耦合神经网络的频谱分配算法[J].计算机工程与科学,2009,31(7). |
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| 作者姓名： | 张波 黄本雄 朱江 徐奎 |
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| 作者单位： | 华中科技大学电子与信息工程系,湖北,武汉,430074 |
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| 基金项目： | 国家自然科学基金资助项目，新世纪优秀人才支持计划资助项目 |
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| 摘 要： | 本文研究认知无线电中的频谱分配问题,分析了脉冲耦合神经网络(PCNN)模型的脉冲传递和数据耦合特性在频谱分配中的作用,研究了授权用户可占用时间对认知无线电通信系统的影响,改进了PCNN模型,提出了一种基于PCNN的频谱算法,在避免频谱干扰的前提下缩短了频谱跨度,减少了频率的使用个数;将授权用户的可占用时间作为分配频谱的依据之一,在保证授权用户通信的基础上提高了系统中非授权用户的吞吐量。最后通过实验证明了算法的有效性。
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| 关 键 词： | 频谱分配 脉冲耦合神经网络 同频干扰 邻频干扰 吞吐量 |
A Spectrum Assignment Algorithm Based on the Improved Pulse Coupled Neural Networks in Cognitive Radio |
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| ZHANG Bo,HUANG Ben-xiong,ZHU Jiang,XU Kui.A Spectrum Assignment Algorithm Based on the Improved Pulse Coupled Neural Networks in Cognitive Radio[J].Computer Engineering & Science,2009,31(7). |
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| Authors: | ZHANG Bo HUANG Ben-xiong ZHU Jiang XU Kui |
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| Affiliation: | Department of Electronics and Information Engineering;Huazhong University of Science and Technology;Wuhan 430074;China |
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| Abstract: | Through studying the spectrum assignment problem in cognitive radio,analyzing the effect of pulse and coupling in pulse coupled neural networks(PCNN),and studying the effect of the holding-time of primary users,a spectrum assignment algorithm based on improved PCNN is proposed in this paper,which shortens the spectrum span in avoiding frequency interference,and increases the throughput of second users without disturbing primary users by considering the effect of the holding-time in cognitive radio. |
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| Keywords: | spectrum assignment pulse coupled neural network(PCNN) co-channel interference adjacent-channel interference throughput |
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