| 基于概率预测的动态频谱接入信道选择方法 |
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| 引用本文： | 李 娜,李 鸥,孙 乐,孙武剑.基于概率预测的动态频谱接入信道选择方法[J].信息工程大学学报,2014,15(1):46-51. |
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| 作者姓名： | 李 娜 李 鸥 孙 乐 孙武剑 |
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| 作者单位： | [1]信息工程大学,河南郑州450001 [2]中国北方电子设备研究所,北京102209 |
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| 基金项目： | 国家863计划资助项目（2009AA01Z207） |
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| 摘 要： | 对动态频谱接入中的多个频谱的选择问题进行了研究,综合考虑物理层频谱感知错误和信道衰落等不利影响,提出了一种基于概率预测的动态频谱接入策略.该策略基于交替更新过程的结论,能够在提高频谱利用率的前提下为认知网络中次用户选择可用度较好的信道.推导了该方法的时延性能理论分析结果,仿真结果表明,提出的算法与现有的随机频谱接入算法相比具有更好的时延性能.
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| 关 键 词： | 认知网络 动态频谱接入 交替更新过程 感知错误 |
Dynamic Spectrum Access Channel Selection Based on Probability Forecasting |
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| LI Na,LI Ou,SUN Le,SUN Wu-jian.Dynamic Spectrum Access Channel Selection Based on Probability Forecasting[J].Journal of Information Engineering University,2014,15(1):46-51. |
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| Authors: | LI Na LI Ou SUN Le SUN Wu-jian |
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| Affiliation: | 1. Information Engineering University, Zhengzhou 450001 , China; 2. Institute of North Electronic Equipment, Beijing 102209, China) |
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| Abstract: | This paper studies the problem of multiple spectrum selecting in dynamic spectrum access. Jointly considering PHY spectrum sensing error and fading channels, this paper proposes a probability based dynamic spectrum accessing method. Based on renewal process theory, the proposed method can select the most available channel for secondary users while greatly improving spectrum efficiency. And this paper derives theoretical analysis result of the delay performance. Simulation results show that the proposed method can reach better delay performance compared with existing random spectrum access methods. |
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| Keywords: | cognitive networks dynamic spectrum access alternative renewal process sensing error |
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