| 基于信号分段处理的截尾型序贯检验算法 |
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| 引用本文： | 吴利平,李赞,李建东,陈晨.基于信号分段处理的截尾型序贯检验算法[J].电子学报,2011,39(10):2412-2416. |
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| 作者姓名： | 吴利平 李赞 李建东 陈晨 |
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| 作者单位： | 西安电子科技大学综合业务网国家重点实验室,陕西西安,710071 |
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| 基金项目： | 国家科技重大专项资金(No.2010ZX03006-002-04); 国家自然科学基金(No.61072070); ISN国家重点实验室自主课题(No.ISN1101002); 高等学校学科创新引智计划(No.B08038); 新世纪优秀人才支持计划(No.NCET-07-0653); 长江学者和创新团队发展计划(No.IRT0852) |
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| 摘 要： | 本文针对复杂电磁环境下认知无线电中的频谱感知需求,结合能量检测算法和序贯似然比检验理论,提出了一种基于信号分段处理的截尾型序贯检验(truncated SPRT)算法.所提算法通过对接收信号进行分段处理和能量计算,并引入中心极限定理,使得序贯检测的似然比函数服从正态分布,从而大大简化后续计算和理论推导过程.为了保证能够...
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| 关 键 词： | 截尾型序贯检验 能量检测 频谱感知 认知无线电 复杂电磁环境 |
| 收稿时间： | 2010-10-13 |
A Truncated SPRT Algorithm Based on Signal Segmental Processing |
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| WU Li-ping,LI Zan,LI Jian-dong,CHEN Chen.A Truncated SPRT Algorithm Based on Signal Segmental Processing[J].Acta Electronica Sinica,2011,39(10):2412-2416. |
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| Authors: | WU Li-ping LI Zan LI Jian-dong CHEN Chen |
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| Institution: | WU Li-ping,LI Zan,LI Jian-dong,CHEN Chen(State Key Laboratory of ISN,Xidian University,Xi'an,Shaanxi 710071,China) |
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| Abstract: | According to the spectrum sensing demand under complex electromagnetic environment in cognitive radio(CR) network,a truncated sequential probability ratio test(SPRT) algorithm by utilizing signal proceeding in segment is proposed based on theory and application of energy detection(ED) and SPRT in this paper.By utilizing energy calculation of received signal in segment and introduction of the central limit theorem,the log-likelihood ratio of energy detection approximates Normal distribution,which greatly sim... |
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| Keywords: | truncated sequential probability ratio test(SPRT) energy detection spectrum sensing cognitive radio complex electromagnetic environment |
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