Two-way cooperative AF relaying in spectrum-sharing systems: Enhancing cell-edge performance
Type
Conference PaperAuthors
Xia, MinghuaAïssa, Sonia
KAUST Department
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) DivisionPhysical Science and Engineering (PSE) Division
Date
2012-09Permanent link to this record
http://hdl.handle.net/10754/564600
Metadata
Show full item recordAbstract
In this contribution, two-way cooperative amplify-and-forward (AF) relaying technique is integrated into spectrumsharing wireless systems to improve spectral efficiency of secondary users (SUs). In order to share the available spectrum resources originally dedicated to primary users (PUs), the transmit power of a SU is optimized with respect to the average tolerable interference power at primary receivers. By analyzing outage probability and achievable data rate at the base station and at a cell-edge SU, our results reveal that the uplink performance is dominated by the average tolerable interference power at primary receivers, while the downlink always behaves like conventional one-way AF relaying and its performance is dominated by the average signal-to-noise ratio (SNR). These important findings provide fresh perspectives for system designers to improve spectral efficiency of secondary users in next-generation broadband spectrum-sharing wireless systems. © 2012 IEEE.Citation
Xia, M., & Aissa, S. (2012). Two-way cooperative AF relaying in spectrum-sharing systems: Enhancing cell-edge performance. 2012 IEEE 23rd International Symposium on Personal, Indoor and Mobile Radio Communications - (PIMRC). doi:10.1109/pimrc.2012.6362598Journal
2012 IEEE 23rd International Symposium on Personal, Indoor and Mobile Radio Communications - (PIMRC)Conference/Event name
2012 IEEE 23rd International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2012ISBN
9781467325691ae974a485f413a2113503eed53cd6c53
10.1109/PIMRC.2012.6362598