TY - JOUR
T1 - Relay cooperation and outage analysis in cognitive radio networks with energy harvesting
AU - He, Jing
AU - Guo, Songtao
AU - Pan, Gaofeng
AU - Yang, Yuanyuan
AU - Liu, Defang
N1 - Publisher Copyright:
© 2007-2012 IEEE.
PY - 2018/9
Y1 - 2018/9
N2 - Cooperative cognitive radio (CCR) is a novel paradigm to improve both radio spectrum efficiency and communication quality. In this paper, we consider a CCR network (CCRN) with energy harvesting in which multiple secondary transmitters (STs) are able to harvest energy from the received signals to serve their own receivers and primary transmitters (PTs). Besides, not only PT's transmitting signal but also interferers, i.e., RF signals in ambient environment received at STs can be used for energy harvesting. Moreover, we aim to analyze the outage probability (OP) for two relay cooperation schemes including single-relay cooperation (SC) and multirelay cooperation (MC) in CCRNs while considering energy harvesting. In addition, we consider Nakagami-m fading rather than Rayleigh fading channels as it is more practical and general for characterizing the fading effect over wireless channels. Most importantly, we compare the outage performance of SC and MC with that of direct transmission and investigate the tradeoff between the primary and secondary users' performance. Simulation results are presented to validate our analysis, which show the exact performance for different parameter settings.
AB - Cooperative cognitive radio (CCR) is a novel paradigm to improve both radio spectrum efficiency and communication quality. In this paper, we consider a CCR network (CCRN) with energy harvesting in which multiple secondary transmitters (STs) are able to harvest energy from the received signals to serve their own receivers and primary transmitters (PTs). Besides, not only PT's transmitting signal but also interferers, i.e., RF signals in ambient environment received at STs can be used for energy harvesting. Moreover, we aim to analyze the outage probability (OP) for two relay cooperation schemes including single-relay cooperation (SC) and multirelay cooperation (MC) in CCRNs while considering energy harvesting. In addition, we consider Nakagami-m fading rather than Rayleigh fading channels as it is more practical and general for characterizing the fading effect over wireless channels. Most importantly, we compare the outage performance of SC and MC with that of direct transmission and investigate the tradeoff between the primary and secondary users' performance. Simulation results are presented to validate our analysis, which show the exact performance for different parameter settings.
KW - Cognitive radio networks (CRNs)
KW - Energy harvesting
KW - Nakagami-m fading
KW - Outage probability (OP)
KW - Relay cooperation
UR - http://www.scopus.com/inward/record.url?scp=85001094087&partnerID=8YFLogxK
U2 - 10.1109/JSYST.2016.2628862
DO - 10.1109/JSYST.2016.2628862
M3 - Article
AN - SCOPUS:85001094087
SN - 1932-8184
VL - 12
SP - 2129
EP - 2140
JO - IEEE Systems Journal
JF - IEEE Systems Journal
IS - 3
M1 - 7763765
ER -