Results 11 to 20 of about 66 (59)

Optimisation of energy efficiency of ambient backscatter communication and reconfigurable intelligent surfaces in non‐orthogonal multiple access downlink

IET Radar, Sonar & Navigation
The authors study the energy efficiency (EE) of ambient backscatter communication (AmBC) device‐assisted and reconfigurable intelligent surfaces (RIS)‐assisted non‐orthogonal multiple access (NOMA) downlinks.
Ruiman Gao, Suoping Li, Nana Yang, Sa Yang, Qian Yang   +4 more
doaj   +2 more sources

Backscatter‐assisted Non‐orthogonal multiple access network for next generation communication

IET Signal Processing, Volume 17, Issue 4, April 2023., 2023
A backscatter‐assisted NOMA network containing two downlink NOMA users and one uplink user is propose. The data rate of the uplink user is maximized. The closed‐form optimal solution is provided. Abstract Non‐orthogonal multiple access (NOMA) technique introduces spectrum cooperation among different users and devices, which improves spectrum efficiency
Ximing Xie, Zhiguo Ding
wiley   +1 more source

A survey on reconfigurable intelligent surfaces: Wireless communication perspective

IET Communications, Volume 17, Issue 5, Page 497-537, March 2023., 2023
This article provides a general survey of the state of the art reconfigurable intelligent reflecting surfaces (RIS) research. It discusses the principle of RIS in terms of design and operations. Abstract Using reconfigurable intelligent surfaces (RISs) to improve the coverage and the data rate of future wireless networks is a viable option.
Saber Hassouna, Muhammad Ali Jamshed, James Rains, Jalil ur Rehman Kazim, Masood Ur Rehman, Mohammad Abualhayja, Lina Mohjazi, Tei Jun Cui, Muhammad Ali Imran, Qammer H. Abbasi   +9 more
wiley   +1 more source

Outage analysis for multi‐BD symbiotic radio system

IET Communications, Volume 16, Issue 19, Page 2301-2308, December 2022., 2022
Abstract Symbiotic radio (SR) is a new spectrum sharing paradigm that allows backscatter device (BD) to transmit information over the ambient radio frequency signal, where the BD is parasitic in the primary transmission, and the secondary system (i.e.
Dan Zhang, Qi Zhu
wiley   +1 more source

Bayesian‐MLE signal detection for multi‐antenna ambient backscatter communication

IET Communications, Volume 16, Issue 6, Page 672-684, April 2022., 2022
Abstract Multi‐antenna signal detection is one of the most critical and challenging issues for ambient backscatter communication (AmBC) systems. This paper proposes an efficient multi‐antenna AmBC signal detection method, called Bayesian‐MLE (maximum likelihood estimation). It shows good performance on high transmission rate, detection accuracy and low
Feng Jing, Hailin Zhang, Mei Gao, Bin Xue   +3 more
wiley   +1 more source

Physical Layer Security of Two‐Way Ambient Backscatter Communication Systems

Wireless Communications and Mobile Computing, Volume 2022, Issue 1, 2022., 2022
Achieving high network traffic demand in limited spectrum resources is a technical challenge for the beyond 5G and 6G communication systems. To this end, ambient backscatter communication (AmBC) is proposed for Internet‐of‐Things (IoT), because the backscatter device (BD) can realize communication without occupying extra spectrum resources.
Hao Wang, Junjie Jiang, Gaojian Huang, Wenbin Wang, Dan Deng, Basem M. Elhalawany, Xingwang Li, Yinghui Ye   +7 more
wiley   +1 more source

Intelligent Spectrum Management and Trajectory Design for UAV‐Assisted Cognitive Ambient Backscatter Networks

Wireless Communications and Mobile Computing, Volume 2021, Issue 1, 2021., 2021
In this paper, we consider a novel Internet of Things (IoT) system in smart city called unmanned aerial vehicle‐ (UAV‐) assisted cognitive backscatter network, where a UAV is employed as both a relay and a radio frequency source to help the data transmission between ground IoT backscatter devices (BDs) and a remote data center (DC).
Jiazhou Liu, Sa Xiao, Huayan Guo, Xiangwei Zhou, Shixin He, Xin Liu   +5 more
wiley   +1 more source

6G Green IoT Network: Joint Design of Intelligent Reflective Surface and Ambient Backscatter Communication

Wireless Communications and Mobile Computing, Volume 2021, Issue 1, 2021., 2021
Ambient backscatter communication (AmBC) is one of the candidate solutions for the 6G green internet of things (IoT) network. However, the uncontrollability of the radio frequency (RF) environment is one of the main obstacles hindering the popularization of AmBC.
Qiang Liu, Songlin Sun, Heng Wang, Shaowei Zhang, Shengjie Xu   +4 more
wiley   +1 more source

Ambient Backscatter Assisted Co-Existence in Aerial-IRS Wireless Networks

IEEE Open Journal of the Communications Society, 2022
Ambient backscatter communication (AmBC) is an emerging technology that has the potential to offer spectral- and energy-efficient solutions for the next generation wireless communications networks, especially for the Internet of Things (IoT). Intelligent
Sourabh Solanki, Sumit Gautam, Shree Krishna Sharma, Symeon Chatzinotas   +3 more
doaj   +1 more source

Signal Detection in Ambient Backscatter Systems: Fundamentals, Methods, and Trends

IEEE Access, 2023
Internet-of-Things (IoT) is rapidly growing in wireless technology, aiming to connect vast numbers of devices to gather and distribute vital information.
Shayan Zargari, Azar Hakimi, Fatemeh Rezaei, Chintha Tellambura, Amine Maaref   +4 more
doaj   +1 more source