naa a22 4500 510795234 CHVBK 20180411083334.0 cr unu---uuuuu 180411e20130301xx s 000 0 eng 10.1007/s11277-012-0606-6 doi (NATIONALLICENCE)springer-10.1007/s11277-012-0606-6 Impact of Quality of Service Constraints on the Performance of Spectrum Sharing Cognitive Users [Elektronische Daten] [Abdallah Farraj, Eman Hammad] This article investigates the impact of choosing a specific quality of service constraint on the performance of the cognitive users in a spectrum sharing cognitive environment. To communicate over a wireless channel reserved to a primary user, the cognitive user has to satisfy the primary user's quality of service constraint. Cognitive systems under interference temperature and outage probability constraints are investigated in this work. The outage probability of the primary user in an interference temperature-constraint environment is analyzed, and the performance measures of the cognitive users are developed. A comparative study of the cognitive user's performance under equivalent outage probability and interference temperature constraints is conducted as well. Numerical results are presented to verify the theoretical analysis and compare the performance measures under these constraints. Results of this work illustrate the effects of the communication environment parameters on the cognitive users and detail the performance differences between the equivalent outage probability-constraint and interference temperature-constraint cognitive systems. Springer Science+Business Media, LLC., 2012 Cognitive communications nationallicence Spectrum sharing nationallicence Outage probability nationallicence Interference temperature nationallicence Transmit power nationallicence Bit error rate nationallicence Channel capacity nationallicence Farraj Abdallah Department of Electrical and Computer Engineering, Texas A&M University, 77843, College Station, TX, USA aut Hammad Eman Department of Electrical and Computer Engineering, Texas A&M University, 77843, College Station, TX, USA aut Wireless Personal Communications Springer US; http://www.springer-ny.com 69/2(2013-03-01), 673-688 0929-6212 69:2<673 2013 69 11277 https://doi.org/10.1007/s11277-012-0606-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0606-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Farraj Abdallah Department of Electrical and Computer Engineering, Texas A&M University, 77843, College Station, TX, USA aut NATIONALLICENCE 700 1- Hammad Eman Department of Electrical and Computer Engineering, Texas A&M University, 77843, College Station, TX, USA aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 69/2(2013-03-01), 673-688 0929-6212 69:2<673 2013 69 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer