Title :
Energy change detection of appearance of the primary signal with unknown power
Author :
Zou, Weixia ; Liu, Mingjie ; Liu, Wei ; Kwak, Kyung Sup ; Zhao, Chengshi
Author_Institution :
Key Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
In this paper, a sequential change detection scheme is proposed to detect the emergence of a primary signal with unknown power. It can be shown that the proposed test can do better than the generalized likelihood ratio (GLR) test, under the same worst case average run length (ARL) of detection delay constraint. And performance of our test is evaluated using theoretical analysis and numerical simulations.
Keywords :
cognitive radio; signal detection; ARL; GLR; average run length; cognitive radio; generalized likelihood ratio; primary signal; sequential energy change detection; unknown power; Chromium; Cognitive radio; Delay; Detectors; Electronic mail; Power system modeling; Sampling methods; Testing; Wireless communication; Wireless networks;
Conference_Titel :
Communications and Information Technology, 2009. ISCIT 2009. 9th International Symposium on
Conference_Location :
Icheon
Print_ISBN :
978-1-4244-4521-9
Electronic_ISBN :
978-1-4244-4522-6
DOI :
10.1109/ISCIT.2009.5341289
