naa a22 4500 510794106 CHVBK 20180411083330.0 cr unu---uuuuu 180411e20130501xx s 000 0 eng 10.1007/s11277-012-0722-3 doi (NATIONALLICENCE)springer-10.1007/s11277-012-0722-3 Scheduling in a Spectrum-Sharing Cognitive Environment Under Outage Probability Constraint [Elektronische Daten] [Abdallah Farraj, Scott Miller] This article investigates a multiuser cognitive environment where secondary users compete to communicate over a channel licensed to a primary user using spectrum sharing. In this environment, both the primary and secondary users transmit to the same receiver unit, and the transmission power of the scheduled secondary user should satisfy the outage probability requirement of the primary user. Secondary users are ranked according to their channel strength, and performance measures are derived as a function of a generic channel rank. Bit error rate, channel capacity, and generated interference are investigated as performance measures. In addition, the performance of the proportional fair, random selection, and round-robin scheduling algorithms are investigated. Numerical results are presented to verify the theoretical analysis and investigate the effects the parameters of the communication environment have on the performance measures and the transmission power of the cognitive users. Springer Science+Business Media, LLC., 2012 Bit error rate nationallicence Channel capacity nationallicence Cognitive communications nationallicence Interference nationallicence Outage probability nationallicence Spectrum sharing nationallicence User scheduling nationallicence Farraj Abdallah Department of Electrical and Computer Engineering, Texas A&M University, College Station, TX, USA aut Miller Scott Department of Electrical and Computer Engineering, Texas A&M University, College Station, TX, USA aut Wireless Personal Communications Springer US; http://www.springer-ny.com 70/2(2013-05-01), 785-805 0929-6212 70:2<785 2013 70 11277 https://doi.org/10.1007/s11277-012-0722-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0722-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Farraj Abdallah Department of Electrical and Computer Engineering, Texas A&M University, College Station, TX, USA aut NATIONALLICENCE 700 1- Miller Scott Department of Electrical and Computer Engineering, Texas A&M University, College Station, TX, USA aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 70/2(2013-05-01), 785-805 0929-6212 70:2<785 2013 70 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer