Blood culture utilization at an academic hospital: Addressing a gap in benchmarking
Blood culture utilization at an academic hospital: Addressing a gap in benchmarking
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具有相关多天线的认知无线电网络的鲁棒盲检测算法
DOI：
10.1109/lcomm.2017.2789184
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发表时间：
2018-11-01
影响因子：
4.5
通讯作者：
Nachamkin, Irving
中科院分区：
文献类型：
--
作者：
Chen, Annie I.;Bilker, Warren B.;Nachamkin, Irving
针对具有大量低相关天线的次用户的频谱感知问题，提出了一种基于LB检验的鲁棒盲检测方法，利用接收信号时间序列的自相关函数来判断信号的存在性。仿真结果表明，在时变瑞利衰落信道中，在接收天线间相关性较低的情况下，与现有的基于协方差的检测方法相比，所提出的LB检验方法具有显著的检测性能改善。
This letter concentrates on the spectrum sensing problem for secondary user equipped with a large number of low-correlated antennas, and a robust blind detection method based on Ljung-Box (LB) test is proposed, which leverages the autocorrelation function of the received time series to evaluate the signal existence. In the scenarios where the correlation between receive antennas is low, simulation results illustrate that the proposed LB-test method attains a significant detection performance improvement compared with the existing covariance-based methods in the time-varying Rayleigh fading channel.