Results 11 to 20 of about 260 (85)

Channel Estimation for Ambient Backscatter Communication Systems with Massive-Antenna Reader [PDF]

IEEE Transactions on Vehicular Technology, 2019
Ambient backscatter, an emerging green communication technology, has aroused great interest from both academia and industry. One open problem for ambient backscatter communication (AmBC) systems is channel estimation for a massive-antenna reader. In this
Atapattu, Saman, He, Ruisi, Liang, Ying-Chang, Wang, Gongpu, Zhao, Wenjing   +4 more
core   +4 more sources

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

Mutualistic cooperative ambient backscatter communications under hardware impairments [PDF]

IEEE Transactions on Communications, 2022
Mutualistic cooperative ambient backscatter communications (AmBC) have been proposed to improve the spectrum and energy efficiencies of Internet-of-Things (IoT) systems, where a primary link (from a primary transmitter to a primary receiver) and an AmBC ...
Chu, X., Lu, G., Shi, L., Sun, S., Ye, Y.   +4 more
core   +4 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

Direct Path Interference Suppression Requirements for Bistatic Backscatter Communication System [PDF]

, 2021
The ambient backscatter communication (AmBC) system utilizes the existing ambient RF signals present in the atmosphere for backscattering the signal. One of the challenges for AmBC system is the interference at the receiver module caused by the direct ...
Biswas, Ritayan, Jantti, Riku, Lempiainen, Jukka, Sheikh, Muhammad Usman, Yigitler, Huseyin   +4 more
core   +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

Joint Design of Improved Spectrum and Energy Efficiency With Backscatter NOMA for IoT

IEEE Access, 2022
To develop emerging transmission techniques for potential applications of Internet of Things (IoT), the system performance analysis of a cognitive radio (CR)-enabled ambient backscatter (AmBC) system will be studied in this paper with functionality of ...
Chi-Bao Le, Dinh-Thuan Do, Adao Silva, Wali Ullah Khan, Waqas Khalid, Heejung Yu, Nhan Duc Nguyen   +6 more
doaj   +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

Intelligent Reconfigurable Surface enhanced Ambient Backscatter Communication enabled Wireless Body Area Network

ICT Express, 2023
This paper considers an Intelligent Reconfigurable Surface (IRS)-enhanced Ambient Backscatter Communication (AmBC)-enabled Wireless Body Area Network (WBAN) system.
Xu Zhao, Weilin Zang, Ye Li
doaj   +1 more source