Performance evaluation of energy detector in Cooperative Spectrum Sensing

2014 8th International Conference on Telecommunication Systems Services and Applications (TSSA) Pub Date : 2014-10-01 DOI:10.1109/TSSA.2014.7065917

N. Armi, M. Wahab, H. Asep Yudi

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引用次数: 2

Abstract

The main idea of Cooperative Spectrum Sensing (CSS) is to improve detection performance. Each Secondary User (SU) shares sensing information to collect data of the unused bands. One technique to detect those frequency bands is energy detector. This technique uses the threshold level to minimize spectrum sensing error in Cognitive Radio (CR) system. Proper selection of the threshold level results a good detection performance. In addition, detection performance to the unused spectrum is indirectly influenced by error rate. Less error rate in spectrum sensing leads to have a good detection performance. In this paper, the detection performance of CSS is investigated. The proper number of collaboration users with target error rate is determined as well in order to achieve an optimal performance. Total error rate of energy detector, signal to noise ratio (SNR), and number of CR user are used as metric for performance evaluation. Through computer simulation, numbers of CR user, degree of voting rule, and threshold value of energy detector have a significant impact to the achieved performance.

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协同频谱感知中能量检测器的性能评价

协同频谱感知(CSS)的主要思想是提高检测性能。每个SU (Secondary User)共享感知信息，收集未使用频段的数据。探测这些频带的一种技术是能量探测器。该技术利用阈值水平最小化了认知无线电(CR)系统的频谱感知误差。适当选择阈值水平可以获得良好的检测性能。此外，误码率会间接影响对未使用频谱的检测性能。频谱传感误差率小，具有良好的检测性能。本文对CSS的检测性能进行了研究。确定了具有目标错误率的协作用户的适当数量，以实现最优性能。以能量检测器的总误差率、信噪比和CR用户数量作为性能评价指标。通过计算机仿真，CR用户的数量、投票规则的程度和能量检测器的阈值对实现的性能有显著影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2014 8th International Conference on Telecommunication Systems Services and Applications (TSSA)

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