caa a22 4500 60620475X CHVBK 20210128101004.0 cr unu---uuuuu 210128e20150101xx s 000 0 eng 10.1007/s00034-014-9845-y doi (NATIONALLICENCE)springer-10.1007/s00034-014-9845-y Improving Sensing and Throughput of the Cognitive Radio Network [Elektronische Daten] [J. Christopher Clement, D. Emmanuel, J. Jenkin Winston] In a cognitive radio network, when primary user's (PU's) spectrum is periodically sensed, secondary user (SU) needs to wait during sensing interval, which causes interruption in SUs' transmission and significant reduction in achievable throughput. If continuous spectrum sensing is implemented, then a portion of a band is always unavailable for SUs' transmission, which also limits the throughput. In this paper, we propose two methods. With the first one, we achieve an increase in throughput, while SUs' transmission is uninterrupted, and in the second method, we let our algorithm dynamically choose time-band portion of a frame for spectrum sensing, causing minimal interference to PU than the one in first method and offering uninterrupted service to cognitive radio (CR) users. Simulation results show that achievable throughput is improved significantly in both methods. It also showed that the methods offer normalized throughput between 4.7 and 5.3bits/s/Hz over a wider range of sensing band from 0.75 to 6MHz, when PU's active phase probability is 0.2, whereas delay-oriented continuous spectrum sensing (DOCSS) scheme achieves this range within a narrower sensing band—especially at the optimal value. Results also showed that for an arbitrary sensing band, normalized throughput achieved by our methods is larger than the one achieved by DOCSS scheme. Springer Science+Business Media New York, 2014 Spectrum sensing nationallicence Throughput nationallicence Primary user nationallicence Secondary user nationallicence Cognitive radio network nationallicence Christopher Clement J. School of Electronics Engineering, VIT University, Vellore, India aut Emmanuel D. School of Electronics Engineering, VIT University, Vellore, India aut Jenkin Winston J. Department of Electronics and Communication Engineering, Karunya University, Coimbatore, India aut Circuits, Systems, and Signal Processing Springer US; http://www.springer-ny.com 34/1(2015-01-01), 249-267 0278-081X 34:1<249 2015 34 34 https://doi.org/10.1007/s00034-014-9845-y text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00034-014-9845-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Christopher Clement J. School of Electronics Engineering, VIT University, Vellore, India aut NATIONALLICENCE 700 1- Emmanuel D. School of Electronics Engineering, VIT University, Vellore, India aut NATIONALLICENCE 700 1- Jenkin Winston J. Department of Electronics and Communication Engineering, Karunya University, Coimbatore, India aut NATIONALLICENCE 773 0- Circuits, Systems, and Signal Processing Springer US; http://www.springer-ny.com 34/1(2015-01-01), 249-267 0278-081X 34:1<249 2015 34 34