TY - JOUR
T1 - Benefits of Improper Gaussian Signaling in Interweave Cognitive Radio with Full and Partial CSI
AU - Hedhly, Wafa
AU - Amin, Osama
AU - Alouini, Mohamed-Slim
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2020
Y1 - 2020
N2 - In this paper, we investigate the impact of using improper Gaussian signaling (IGS) scheme on the interweave cognitive radio (CR) paradigm when the cognitive user has access to full or partial channel-state-information (CSI). Throughout this work, we analyze the performance of both the primary user (PU) and secondary user (SU) in terms of instantaneous achievable rate and outage probability, for given sensing and
detection capabilities. Then, we optimize the IGS scheme for full and partial CSI scenarios to maximize the achievable rate of the SU while maintaining a minimum quality-of-service (QoS) requirement for the PU. Meanwhile, we derive the corresponding feasibility conditions for the interweave cognitive radio system operation. IGS based systems are proven to provide notable gain over the conventional proper Gaussian signaling, which is considered our benchmark scheme. The IGS scheme is observed to be further beneficial at low SU detection capabilities, strong interference from the cognitive user to the licensed user, and lowgain of the PU direct link. Index Terms—Interweave, cognitive radio, improper Gaussian signaling, asymmetric signaling, miss detection, interference channels.
AB - In this paper, we investigate the impact of using improper Gaussian signaling (IGS) scheme on the interweave cognitive radio (CR) paradigm when the cognitive user has access to full or partial channel-state-information (CSI). Throughout this work, we analyze the performance of both the primary user (PU) and secondary user (SU) in terms of instantaneous achievable rate and outage probability, for given sensing and
detection capabilities. Then, we optimize the IGS scheme for full and partial CSI scenarios to maximize the achievable rate of the SU while maintaining a minimum quality-of-service (QoS) requirement for the PU. Meanwhile, we derive the corresponding feasibility conditions for the interweave cognitive radio system operation. IGS based systems are proven to provide notable gain over the conventional proper Gaussian signaling, which is considered our benchmark scheme. The IGS scheme is observed to be further beneficial at low SU detection capabilities, strong interference from the cognitive user to the licensed user, and lowgain of the PU direct link. Index Terms—Interweave, cognitive radio, improper Gaussian signaling, asymmetric signaling, miss detection, interference channels.
UR - http://hdl.handle.net/10754/661470
UR - https://ieeexplore.ieee.org/document/8984228/
UR - http://www.scopus.com/inward/record.url?scp=85079460604&partnerID=8YFLogxK
U2 - 10.1109/TCCN.2020.2971681
DO - 10.1109/TCCN.2020.2971681
M3 - Article
SN - 2332-7731
SP - 1
EP - 1
JO - IEEE Transactions on Cognitive Communications and Networking
JF - IEEE Transactions on Cognitive Communications and Networking
ER -