Abstract:
Intelligent reflecting surface (IRS) has received widespread attention because it can significantly improve the performance of wireless networks. The X-duplex is a more f...Show MoreMetadata
Abstract:
Intelligent reflecting surface (IRS) has received widespread attention because it can significantly improve the performance of wireless networks. The X-duplex is a more flexible duplex mode, which can decrease a small sum rate in exchange for a higher quality-of-service performance. In this article, an IRS transmission scheme based on X-duplex isinvestigated to enhance the flexibility and freedom of communication design. We present the X-duplex IRS with the simultaneous wireless information and power transfer, and establish a power consumption model based on real application scenarios. An alternating optimization algorithm is proposed to maximize the energy efficiency (EE) of a multi-input single-output (MIMO) network assisted by the X-duplex IRS. As for the X-duplex relay, we explore an algorithm based on the golden section to optimize the EE. Simulation results comprehensively evaluate the performance of the two auxiliary transmission methods. The X-duplex IRS has higher EE and weighted sum rate (WSR) than the X-duplex relay when sufficient transmission power is available. However, the IRS cannot entirely replace the traditional relay. The X-duplex relay with self-interference energy harvesting achieves a higher WSR and EE when the access point energy is limited or the transmission distance is short.
Published in: IEEE Systems Journal ( Volume: 16, Issue: 4, December 2022)
Funding Agency:
School of Communication and Information Engineering and the Chongqing Key Lab of Computer Network and Communication Technology, Chongqing University of Posts and Telecommunications, Chongqing, China
Xianzhong Xie (Member, IEEE) received the Ph.D. degree in communication and information systems from Xidian University, Xi’an, China, in 2000.
He is currently a Professor and Director of the Chongqing Key Lab of Computer Network and Communication Technology, Chongqing University of Posts and Telecommunications, Chongqing, China. He is also the principal author of six books and the inventor of 43 granted patents. He has aut...Show More
Xianzhong Xie (Member, IEEE) received the Ph.D. degree in communication and information systems from Xidian University, Xi’an, China, in 2000.
He is currently a Professor and Director of the Chongqing Key Lab of Computer Network and Communication Technology, Chongqing University of Posts and Telecommunications, Chongqing, China. He is also the principal author of six books and the inventor of 43 granted patents. He has aut...View more
School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing, China
Hong Tang received the B.S. degree in communication engineering from the Chongqing University of Posts and Telecommunications, Chongqing, China, in 2019, where she is currently working toward the M.S. degree in information and communication engineering.
Her main research interests include wireless communication, X-duplex, cognitive radio network, and intelligent reflecting surface.
Hong Tang received the B.S. degree in communication engineering from the Chongqing University of Posts and Telecommunications, Chongqing, China, in 2019, where she is currently working toward the M.S. degree in information and communication engineering.
Her main research interests include wireless communication, X-duplex, cognitive radio network, and intelligent reflecting surface.View more
School of Computer Science and Engineering, Nanyang Technological University, Singapore, Singapore
Chongqing Key Lab of Computer Network and Communication Technology, Chongqing University of Posts and Telecommunications, Chongqing, China
Chongqing Key Lab of Computer Network and Communication Technology, Chongqing University of Posts and Telecommunications, Chongqing, China
Contents School of Communication and Information Engineering and the Chongqing Key Lab of Computer Network and Communication Technology, Chongqing University of Posts and Telecommunications, Chongqing, China
Xianzhong Xie (Member, IEEE) received the Ph.D. degree in communication and information systems from Xidian University, Xi’an, China, in 2000.
He is currently a Professor and Director of the Chongqing Key Lab of Computer Network and Communication Technology, Chongqing University of Posts and Telecommunications, Chongqing, China. He is also the principal author of six books and the inventor of 43 granted patents. He has authored or coauthored more than 120 papers in refereed journals and 30 papers in peer-reviewed international conferences. His research interests include simultaneous information and power transfer, intelligent reflecting surface, and ultrareliable low-latency communications.
Xianzhong Xie (Member, IEEE) received the Ph.D. degree in communication and information systems from Xidian University, Xi’an, China, in 2000.
He is currently a Professor and Director of the Chongqing Key Lab of Computer Network and Communication Technology, Chongqing University of Posts and Telecommunications, Chongqing, China. He is also the principal author of six books and the inventor of 43 granted patents. He has authored or coauthored more than 120 papers in refereed journals and 30 papers in peer-reviewed international conferences. His research interests include simultaneous information and power transfer, intelligent reflecting surface, and ultrareliable low-latency communications.View more
School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing, China
Hong Tang received the B.S. degree in communication engineering from the Chongqing University of Posts and Telecommunications, Chongqing, China, in 2019, where she is currently working toward the M.S. degree in information and communication engineering.
Her main research interests include wireless communication, X-duplex, cognitive radio network, and intelligent reflecting surface.
Hong Tang received the B.S. degree in communication engineering from the Chongqing University of Posts and Telecommunications, Chongqing, China, in 2019, where she is currently working toward the M.S. degree in information and communication engineering.
Her main research interests include wireless communication, X-duplex, cognitive radio network, and intelligent reflecting surface.View more
School of Computer Science and Engineering, Nanyang Technological University, Singapore, Singapore
Chongqing Key Lab of Computer Network and Communication Technology, Chongqing University of Posts and Telecommunications, Chongqing, China
Chongqing Key Lab of Computer Network and Communication Technology, Chongqing University of Posts and Telecommunications, Chongqing, China
