文章摘要
Nguyen Tien Tung,Pham Minh Nam,Phu Tran Tin.[J].重庆邮电大学新办英文刊,2021,7(1):45-54
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Performance evaluation of a two-way relay network with energy harvesting and hardware noises
Received: July 17, 2018  Revised: July 26, 2019
DOI:https://doi.org/10.1016/j.dcan.2020.04.003
中文关键词: 
英文关键词: Energy harvesting;Two-way relay;Energy efficiency;Hardware impairments;Cognitive network
基金项目:This research is funded by the Industrial University of Ho Chi Minh City under code 20/1.6 ĐT01.
AuthorInstitutionE-mail
Nguyen Tien Tung Faculty of Electronics Technology, Industrial University of Ho Chi Minh City, Ho Chi Minh City, Vietnam nguyentientung@iuh.edu.vn;Pham Minh Nam,phamminhnam@iuh.edu.vn;Phu Tran Tin,phutrantin@tdtu.edu.vn 
Pham Minh Nam Faculty of Electronics Technology, Industrial University of Ho Chi Minh City, Ho Chi Minh City, Vietnam phamminhnam@iuh.edu.vn;Phu Tran Tin,phutrantin@tdtu.edu.vn 
Phu Tran Tin Wireless Communications Research Group, Faculty of Electrical and Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City, Vietnam phutrantin@tdtu.edu.vn 
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中文摘要:
      
英文摘要:
      In this paper, we propose a Two-Way Cognitive Relay Network (TWCRN) where the secondary users operate on an underlay mode to access the licensed bands. In the proposed protocols, two secondary sources transmit their data to a relay in the first time slot, and then the relay would forward the received information to both sources in the remaining time. Moreover, the relay is self-powered by harvesting energy from ambient Radio Frequency (RF) signals, using the Time Switching (TS) and the Power Switching (PS) method. This paper concentrates on evaluating the performance of the secondary networks under the impact of hardware impairments and co-channel interference from the primary networks. In particular, based on the secondary transmitters’ constraint power, we derive the closed-form expressions of the outage probability and the throughput over Rayleigh fading channels in two cases: TS and PS. We also investigate the energy efficiency issue and the locally optimal position of the relay to maximize the system throughput, which provides much information to install the relay location. Finally, our derivations are verified by Monte Carlo simulation.