Cooperative spectrum sensing for non-time-slotted full-duplex cognitive radio networks

Abstract

A new cooperative spectrum sensing method for non-time-slotted full duplex cognitive radio networks (FD-CRNs) is proposed in this paper, with the self-interference channel considered as Nakagami-m fading channel, which is more practical compared with commonly used Rayleigh and Rice channel. Closed-form expressions of the probabilities of false alarm and detection are provided in this paper for non-time-slotted FD-CRNs case. Furthermore, a novel cooperative scheme is also proposed, and compared with traditional OR fusion rule, our cooperative scheme improves the throughput of secondary (unlicensed) user (SU) without affecting the throughput of the primary (licensed) user (PU), when the signal-to-noise ratio (SNR) of the SU is in a reasonable range. Numerical and simulation results demonstrate the advantage of our proposed scheme.