TY - GEN
T1 - Cooperative sensing with ternary local decisions
AU - Duan, Dongliang
AU - Yang, Liuqing
PY - 2012
Y1 - 2012
N2 - Cognitive radio is gaining increasingly interest as a promising solution to current spectrum resource shortage. Within various tasks of cognitive radio, spectrum sensing is the fundamental one, but is challenged by wireless channel fading. By collecting diversity among different users, cooperative sensing can overcome the fading problem very well. Usually, only the local binary decisions are available for sensing cooperation due to limitation of the channel bandwidth. However, in our previous work [1], we have shown that this strategy will either sacrifice diversity or signal-to-noise ratio (SNR) gain. In this paper, we will study cooperative sensing with ternary local decisions. Compared with the binary cooperative sensing, this strategy will can regain diversity and recover the extra SNR loss by appropriate threshold selection, without increasing the decision forwarding bandwidth.
AB - Cognitive radio is gaining increasingly interest as a promising solution to current spectrum resource shortage. Within various tasks of cognitive radio, spectrum sensing is the fundamental one, but is challenged by wireless channel fading. By collecting diversity among different users, cooperative sensing can overcome the fading problem very well. Usually, only the local binary decisions are available for sensing cooperation due to limitation of the channel bandwidth. However, in our previous work [1], we have shown that this strategy will either sacrifice diversity or signal-to-noise ratio (SNR) gain. In this paper, we will study cooperative sensing with ternary local decisions. Compared with the binary cooperative sensing, this strategy will can regain diversity and recover the extra SNR loss by appropriate threshold selection, without increasing the decision forwarding bandwidth.
KW - cognitive radio
KW - cooperative spectrum sensing
KW - decision fusion
KW - diversity gain
KW - local ternary decision
UR - http://www.scopus.com/inward/record.url?scp=84867600111&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84867600111&partnerID=8YFLogxK
U2 - 10.1109/ICASSP.2012.6288714
DO - 10.1109/ICASSP.2012.6288714
M3 - Conference contribution
AN - SCOPUS:84867600111
SN - 9781467300469
T3 - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
SP - 3677
EP - 3680
BT - 2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012 - Proceedings
T2 - 2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012
Y2 - 25 March 2012 through 30 March 2012
ER -