Abstract
SummaryCognitive radio systems play an important role in the current digital communication systems. With regard to the methods developed, the importance of a coherent detector with matched filters arises, taking into account the optimal properties verified in detection and sensing time. However, the need of perfect timing limits the applicability of this type of system, because of the complexity in hardware implementation. Based upon slope estimation techniques, the present article addresses new methods for tackling this problem. A low complexity system is obtained, and applications can be considered for finding white space in digital television. The results show a good performance with regard to the probability of detection and robustness regarding frequency offset. Copyright © 2015 John Wiley & Sons, Ltd.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
