TY - GEN
T1 - Sharing the Licensed Spectrum of Full-Duplex Systems Using Improper Gaussian Signaling
AU - Gaafar, Mohamed
AU - Amin, Osama
AU - Abediseid, Walid
AU - Alouini, Mohamed-Slim
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2015/12
Y1 - 2015/12
N2 - Sharing the spectrum with in-band full-duplex (FD) primary users (PU) is a challenging and interesting problem in the underlay cognitive radio (CR) systems. The self-interference
introduced at the primary network may dramatically impede the secondary user (SU) opportunity to access the spectrum. In this
work, we attempt to tackle this problem through the use of the so-called improper Gaussian signaling. Such a signaling technique has demonstrated its superiority in improving the overall performance in interference limited networks. Particularly, we assume a system with a SU pair working in half-duplex mode that uses
improper Gaussian signaling while the FD PU pair implements the regular proper Gaussian signaling techniques. First, we derive
a closed form expression for the SU outage probability and an upper bound for the PU outage probability. Then, we optimize the SU signal parameters to minimize its outage probability while maintaining the required PU quality-of-service based on the average channel state information. Finally, we provide some
numerical results that validate the tightness of the PU outage probability bound and demonstrate the advantage of employing
the improper Gaussian signaling to the SU in order to access the spectrum of the FD PU.
AB - Sharing the spectrum with in-band full-duplex (FD) primary users (PU) is a challenging and interesting problem in the underlay cognitive radio (CR) systems. The self-interference
introduced at the primary network may dramatically impede the secondary user (SU) opportunity to access the spectrum. In this
work, we attempt to tackle this problem through the use of the so-called improper Gaussian signaling. Such a signaling technique has demonstrated its superiority in improving the overall performance in interference limited networks. Particularly, we assume a system with a SU pair working in half-duplex mode that uses
improper Gaussian signaling while the FD PU pair implements the regular proper Gaussian signaling techniques. First, we derive
a closed form expression for the SU outage probability and an upper bound for the PU outage probability. Then, we optimize the SU signal parameters to minimize its outage probability while maintaining the required PU quality-of-service based on the average channel state information. Finally, we provide some
numerical results that validate the tightness of the PU outage probability bound and demonstrate the advantage of employing
the improper Gaussian signaling to the SU in order to access the spectrum of the FD PU.
UR - http://hdl.handle.net/10754/605171
UR - http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=7417525
U2 - 10.1109/GLOCOM.2015.7417525
DO - 10.1109/GLOCOM.2015.7417525
M3 - Conference contribution
SN - 9781479959525
BT - IEEE Global Communications Conference (GLOBECOM)
PB - Institute of Electrical and Electronics Engineers (IEEE)
ER -