Performance improvement of energy detector in cognitive radio using SECp diversity combining technique over fading channel Online publication date: Mon, 09-Mar-2020
by Rupali Agarwal; Neelam Srivastava; Himanshu Katiyar
International Journal of Wireless and Mobile Computing (IJWMC), Vol. 18, No. 2, 2020
Abstract: In this paper, performance of energy detector is analysed over Rayleigh fading environment using different diversity combining techniques. The channel is considered as Independent and Identically Distributed (IID). The closed form expressions for probability of detection using Switch and Stay Combining (SSC) as well as switch and examine combining using post examining selection (SECp) are derived. The performance is compared using the curves of probability of detection for different Signal to Noise Ratio (SNR). Probability of false alarm versus probability of misdetection curves is also compared. These curves are called complementary Receiver Operating Characteristics (ROC) curves. For dual diversity system, SECp is a modified form of SSC. Unlike SSC, when all the paths are tested and none of them has an acceptable SNR, the SECp combiner selects the path having highest SNR. So energy detector's detection performance in a dual diversity system is improved using SECp which is analysed here.
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Wireless and Mobile Computing (IJWMC):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email subs@inderscience.com
Our Blog 
Follow us on Twitter 
Visit us on Facebook