TY - GEN
T1 - Two-way cooperative AF relaying in spectrum-sharing systems: Enhancing cell-edge performance
AU - Xia, Minghua
AU - Aïssa, Sonia
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2012/9
Y1 - 2012/9
N2 - 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.
AB - 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.
UR - http://hdl.handle.net/10754/564600
UR - http://ieeexplore.ieee.org/document/6362598/
UR - http://www.scopus.com/inward/record.url?scp=84871958435&partnerID=8YFLogxK
U2 - 10.1109/PIMRC.2012.6362598
DO - 10.1109/PIMRC.2012.6362598
M3 - Conference contribution
SN - 9781467325691
SP - 1571
EP - 1576
BT - 2012 IEEE 23rd International Symposium on Personal, Indoor and Mobile Radio Communications - (PIMRC)
PB - Institute of Electrical and Electronics Engineers (IEEE)
ER -