部分相干认知无线电信道中Wald测试的性能研究

2011 International Conference on Communications and Information Technology (ICCIT) Pub Date : 2011-03-29 DOI:10.1109/ICCITECHNOL.2011.5762685

O. F. Rodriguez, S. Primak, V. Kontorovich

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引用次数: 4

摘要

将一种基于A. wald序列分析的认知无线电(CR)网络频谱感知技术应用于部分相干信道场景。它表明，使用Wald的测试，有可能减少所需的样本数量，以检测主用户的存在，大约2的因素相比，众所周知的内曼-皮尔逊测试。导出了部分相干信道情况下的Wald检验统计量表达式。研究了相位不确定度对测试性能的影响。

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On performance of the Wald test in partially coherent Cognitive Radio channels

A spectrum sensing technique for Cognitive Radio (CR) Networks based on the Sequential Analysis of A.Wald is applied to partially coherent channel scenarios. It is shown that using Wald's test, it is possible to reduce the number of samples required to detect the presence of the primary user by approximately a factor of 2 in comparison to the well known Neyman-Pearson test. An expression for the Wald test statistic for the case of partially coherent channel is derived. Effects of phase uncertainty on the performance of the test is investigated.

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2011 International Conference on Communications and Information Technology (ICCIT)

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