TY - JOUR
T1 - Underlay Cognitive Radio Systems with Improper Gaussian Signaling: Outage Performance Analysis
AU - Amin, Osama
AU - Abediseid, Walid
AU - Alouini, Mohamed-Slim
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The work of M.-S. Alouini was supported by the Qatar National Research
Fund (a member of Qatar Foundation) under NPRP Grant NPRP 5-250-2-087.
The statements made herein are solely the responsibility of the authors.
PY - 2016/3/29
Y1 - 2016/3/29
N2 - Improper Gaussian signaling has the ability over proper (conventional) Gaussian signaling to improve the achievable rate of systems that suffer from interference. In this paper, we study the impact of using improper Gaussian signaling on the performance limits of the underlay cognitive radio system by analyzing the achievable outage probability of both the primary user (PU) and secondary user (SU). We derive the exact outage probability expression of the SU and construct upper and lower bounds of the PU outage probability which results in formulating an approximate expression of the PU outage probability. This allows us to design the SU signal by adjusting its transmitted power and the circularity coefficient to minimize the SU outage probability while maintaining a certain PU quality-of-service. Finally, we evaluate the derived expressions for both the SU and the PU and the corresponding adaptive algorithms by numerical results.
AB - Improper Gaussian signaling has the ability over proper (conventional) Gaussian signaling to improve the achievable rate of systems that suffer from interference. In this paper, we study the impact of using improper Gaussian signaling on the performance limits of the underlay cognitive radio system by analyzing the achievable outage probability of both the primary user (PU) and secondary user (SU). We derive the exact outage probability expression of the SU and construct upper and lower bounds of the PU outage probability which results in formulating an approximate expression of the PU outage probability. This allows us to design the SU signal by adjusting its transmitted power and the circularity coefficient to minimize the SU outage probability while maintaining a certain PU quality-of-service. Finally, we evaluate the derived expressions for both the SU and the PU and the corresponding adaptive algorithms by numerical results.
UR - http://hdl.handle.net/10754/604717
UR - http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=7442892
UR - http://www.scopus.com/inward/record.url?scp=84979018632&partnerID=8YFLogxK
U2 - 10.1109/TWC.2016.2547918
DO - 10.1109/TWC.2016.2547918
M3 - Article
SN - 1536-1276
VL - 15
SP - 4875
EP - 4887
JO - IEEE Transactions on Wireless Communications
JF - IEEE Transactions on Wireless Communications
IS - 7
ER -