A Probabilistic MAC for Cognitive Radio Systems with Energy Harvesting Nodes

Autor:	Ali, Ramy E., Digham, Fadel F., Seddik, Karim G., Nafie, Mohammed, El-Keyi, Amr, Han, Zhu
Rok vydání:	2014
Předmět:	Computer Science - Networking and Internet Architecture Computer Science - Information Theory
Druh dokumentu:	Working Paper
DOI:	10.1109/GlobalSIP.2014.7032095
Popis:	In this paper, we consider a cognitive radio (CR) system where the secondary user (SU) harvests energy from both the nature resources and the primary user (PU) radio frequency(RF) signal. We propose an energy-based probabilistic access scheme in which SU probabilistically accesses and senses the primary channel. The decision is based on the available energy and the PU's activity. We investigate the problem of maximizing the SU's success rate provided that the PU average quality of service (QoS) constraint is satisfied. We also assume multi-packet reception (MPR) capability and sensing errors under a Rayleigh fading channel. Numerical results show the effectiveness of the proposed probabilistic access scheme. Comment: 5 pages, IEEE GlobalSIP 2014
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1408.2779 Zobrazit plný text záznamu View this record from Arxiv