Efficient quantification using local information for cooperative spectrum sensing in cognitive radio

Qun Pan; Xin Zhang; Yuehong Gao; Dacheng Yang; Yuming Jiang

5th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications

Research Article

Efficient quantification using local information for cooperative spectrum sensing in cognitive radio

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@INPROCEEDINGS{10.4108/ICST.CROWNCOM2010.9244,
    author={Qun Pan and Xin Zhang and Yuehong Gao and Dacheng Yang and Yuming Jiang},
    title={Efficient quantification using local information for cooperative spectrum sensing in cognitive radio},
    proceedings={5th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications},
    publisher={IEEE},
    proceedings_a={CROWNCOM},
    year={2010},
    month={9},
    keywords={cooperative spectrum sensing log-likelihood ratio overhead bits cognitive radio},
    doi={10.4108/ICST.CROWNCOM2010.9244}
}

Qun Pan
Xin Zhang
Yuehong Gao
Dacheng Yang
Yuming Jiang
Year: 2010
Efficient quantification using local information for cooperative spectrum sensing in cognitive radio
CROWNCOM
IEEE
DOI: 10.4108/ICST.CROWNCOM2010.9244

Qun Pan¹^,*, Xin Zhang¹, Yuehong Gao²^,*, Dacheng Yang¹, Yuming Jiang²

1: Wireless Theories and Technologies Lab (WT&T), Beijing University of Posts and Telecommunications (BUPT), Beijing, P.R. China
2: Centre for Quantifiable Quality of Service in Communication Systems (Q2S), Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway

*Contact email: lionheartpq@gmail.com, gaoyuehong24@163.com

Abstract

Cooperative spectrum sensing, a key technology in cognitive radio, has to summarize all the detection information from cognitive terminals without licensed band. In order to employ both reliable and efficient transmission of overhead, this paper seeks a way of quantifying the detection information with variable length to save the spectrum resource as much as possible. Analysis and simulation show the detection performance of our scheme is similar to the optimal linear combination scheme and much higher than the "OR" combination one, and even the total overhead does not increase significantly than the "OR" combination scheme.

Keywords: cooperative spectrum sensing log-likelihood ratio overhead bits cognitive radio

Published: 2010-09-16
Publisher: IEEE

: http://dx.doi.org/10.4108/ICST.CROWNCOM2010.9244