Title :
Outage performance analysis of secondary user under Tx/Rx IQI in cognitive radio systems
Author :
Seyed Ali Mohajeran;Seyed Mohammad Sajad Sadough
Author_Institution :
Cognitive Telecommunication Research Group, Dept. of Electrical Enginnering, Shahid Beheshti University G.C., 1983963113, Tehran, IRAN
Abstract :
Local oscillators in direct conversion transceivers result in in-phase and quadrature-phase imbalance (IQI) which severely affects the performance of communication systems. In this work, we consider cognitive radio (CR) communication based on orthogonal frequency division multiplexing (OFDM) experiencing IQI at the receiver as well as at the transmitter. First, we derive an approximate expression for outage probability under joint Tx and Rx IQI. Second, we derive exact outage probability expressions under Tx IQI only. Numerical results demonstrate the validity of derived closed form expressions in CR systems.
Keywords :
"Multiplexing","Modulation","Prognostics and health management","Signal to noise ratio","Wireless sensor networks","Wireless communication","Sensors"
Conference_Titel :
Computer and Knowledge Engineering (ICCKE), 2015 5th International Conference on
DOI :
10.1109/ICCKE.2015.7365835
