WASET
	@article{(Open Science Index):https://publications.waset.org/pdf/6971,
	  title     = {Efficient Detection Using Sequential Probability Ratio Test in Mobile Cognitive Radio Systems},
	  author    = {Yeon-Jea Cho and  Sang-Uk Park and  Won-Chul Choi and  Dong-Jo Park},
	  country	= {},
	  institution	= {},
	  abstract     = {This paper proposes a smart design strategy for a sequential detector to reliably detect the primary user-s signal, especially in fast fading environments. We study the computation of the log-likelihood ratio for coping with a fast changing received signal and noise sample variances, which are considered random variables. First, we analyze the detectability of the conventional generalized log-likelihood ratio (GLLR) scheme when considering fast changing statistics of unknown parameters caused by fast fading effects. Secondly, we propose an efficient sensing algorithm for performing the sequential probability ratio test in a robust and efficient manner when the channel statistics are unknown. Finally, the proposed scheme is compared to the conventional method with simulation results with respect to the average number of samples required to reach a detection decision.
},
	    journal   = {International Journal of Electronics and Communication Engineering},
	  volume    = {6},
	  number    = {2},
	  year      = {2012},
	  pages     = {244 - 248},
	  ee        = {https://publications.waset.org/pdf/6971},
	  url   	= {https://publications.waset.org/vol/62},
	  bibsource = {https://publications.waset.org/},
	  issn  	= {eISSN: 1307-6892},
	  publisher = {World Academy of Science, Engineering and Technology},
	  index 	= {Open Science Index 62, 2012},
	}