|Table of Contents|

[1] Su Qian, Song TiechengHu JingShen Lianfeng,. Adaptive double-threshold energy detection algorithmfor cognitive radio [J]. Journal of Southeast University (English Edition), 2011, 27 (4): 351-356. [doi:10.3969/j.issn.1003-7985.2011.04.001]
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Adaptive double-threshold energy detection algorithmfor cognitive radio()
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
27
Issue:
2011 4
Page:
351-356
Research Field:
Information and Communication Engineering
Publishing date:
2011-12-31

Info

Title:
Adaptive double-threshold energy detection algorithmfor cognitive radio
Author(s):
Su Qian Song TiechengHu JingShen Lianfeng
National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China
Keywords:
energy detection software radio probability of detection sensing time
PACS:
TN92
DOI:
10.3969/j.issn.1003-7985.2011.04.001
Abstract:
Due to the fact that the conventional spectrum sensing algorithm is susceptible to noise, an adaptive double-threshold energy detection algorithm for a cognitive radio is proposed. Based on double-threshold energy detection, the algorithm can adaptively switch between one-round sensing and two-round sensing by comparing the observations with the pre-fixed thresholds. Mathematical expressions for the probability of detection, the probability of false alarm, and the sensing time are derived. The relationships including signal to noise ratio(SNR)vs. the probability of detection and SNR vs. the sensing time are plotted using Monte Carlo simulation and the algorithm is verified in a real cognitive system based on GNU Radio and universal software radio peripheral(USRP). Simulation and experimental results show that, compared with the existing spectrum sensing method, the proposed algorithm can achieve a higher probability of detection within a reasonable sensing time.

References:

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[8] Kay S M. Fundamentals of statistical signal processing, vol.Ⅱ:detection theory[M]. Prentice-Hall, 1998.
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Memo

Memo:
Biographies: Su Qian(1987—), female, graduate; Song Tiecheng(corresponding author), male, doctor, professor, songtc@seu.edu.cn.
Foundation items: The National Science and Technology Major Project(No.2010ZX03006-002-01), the National Natural Science Foundation of China(No.60972026), the Cultivation Fund of the Key Scientific and Technical Innovation Project, Ministry of Education of China(No.708046).
Citation: Su Qian, Song Tiecheng, Hu Jing, et al. Adaptive double-threshold energy detection algorithm for cognitive radio [J].Journal of Southeast University(English Edition), 2011, 27(4):351-356.[doi:10.3969/j.issn.1003-7985.2011.04.001]
Last Update: 2011-12-20