TY - GEN
T1 - A study of SNR wall phenomenon under cooperative energy spectrum sensing
AU - Li, Zejiao
AU - Su, Xin
AU - Zeng, Jie
AU - Kuang, Yujun
AU - Wang, Haijun
PY - 2013
Y1 - 2013
N2 - Energy detection has a low complexity of receiver structure and requires no information about primary signal. However, a single user detection has been proved vulnerable to the noise uncertainty, which causes the existence of a SNR wall belowwhich the detector cannot robustly a chieve the given detection requirement. Compared to single user detection, cooperative energy spectrum sensing algorithms can increase the detection probability significantly. In this paper we expound the SNR wall in a new perspective and analyze the SNR wall phenomenon under typical cooperative energy spectrum sensing algorithms. Besides, experimental tests have been made to study the influence of threshold setting methods to the detection performance. Analysis and simulation results show that cooperative sensing and suitable threshold setting are hopeful to decrease the limitation of SNR wall phenomenon.
AB - Energy detection has a low complexity of receiver structure and requires no information about primary signal. However, a single user detection has been proved vulnerable to the noise uncertainty, which causes the existence of a SNR wall belowwhich the detector cannot robustly a chieve the given detection requirement. Compared to single user detection, cooperative energy spectrum sensing algorithms can increase the detection probability significantly. In this paper we expound the SNR wall in a new perspective and analyze the SNR wall phenomenon under typical cooperative energy spectrum sensing algorithms. Besides, experimental tests have been made to study the influence of threshold setting methods to the detection performance. Analysis and simulation results show that cooperative sensing and suitable threshold setting are hopeful to decrease the limitation of SNR wall phenomenon.
UR - http://www.scopus.com/inward/record.url?scp=84891377413&partnerID=8YFLogxK
U2 - 10.1109/ICCCN.2013.6614095
DO - 10.1109/ICCCN.2013.6614095
M3 - Conference contribution
AN - SCOPUS:84891377413
SN - 9781467357746
T3 - Proceedings - International Conference on Computer Communications and Networks, ICCCN
BT - 22nd International Conference on Computer Communications and Networks, ICCCN 2013 - Conference Proceedings
T2 - 2013 IEEE 2013 22nd International Conference on Computer Communication and Networks, ICCCN 2013
Y2 - 30 July 2013 through 2 August 2013
ER -