Passive Beamforming and Information Transfer via Large Intelligent Surface

05/04/2019
by   Wenjing Yan, et al.
0

Large intelligent surface (LIS) has emerged as a promising new solution to improve the energy and spectrum efficiency of wireless networks. A LIS, composed of a large number of low-cost and energy-efficient reconfigurable passive reflecting elements, enhances wireless communications by reflecting impinging electro-magnetic waves. In this paper, we propose a novel passive beamforming and information transfer (PBIT) technique, in which the LIS simultaneously enhances the primary communication and sends information to the receiver. We develop a passive beamforming method to improve the average receive signal-to-noise ratio (SNR).We also establish a two-step approach at the receiver to retrieve the information from both the transmitter and the LIS. Numerical results show that the proposed PBIT system, especially with the optimized passive beamforming, significantly outperforms the system without LIS enhancement. Furthermore, a tradeoff between the passive-beamforming gain and the information rate of the LIS has been demonstrated.

READ FULL TEXT

page 1

page 2

page 3

page 4

page 5

research
04/10/2023

Electromagnetic Interference Cancellation for RIS-Assisted Communications

Reconfigurable intelligent surface (RIS)-empowered communication is an e...
research
01/08/2020

Unsupervised Learning for Passive Beamforming

Reconfigurable intelligent surface (RIS) has recently emerged as a promi...
research
07/13/2023

Experimental Demonstration of 3D Reflected Beamforming at sub6GHz thanks to Varactor Based Reconfigurable Intelligent Surface

Reconfigurable intelligent surface (RIS) is a promising solution to boos...
research
10/05/2022

Joint Reconfigurable Intelligent Surface Location and Passive Beamforming Optimization for Maximizing the Secrecy-Rate

The physical layer security (PLS) is investigated for reconfigurable int...
research
12/21/2019

Passive Beamforming and Information Transfer Design for Large Intelligent Surface Aided Multiuser MIMO Systems

This paper investigates the passive beamforming and information transfer...
research
06/16/2023

Reconfigurable Intelligent Surface Assisted Semantic Communication Systems

Semantic communication, which focuses on conveying the meaning of inform...
research
10/02/2019

On the Optimality of Reconfigurable Intelligent Surfaces (RISs): Passive Beamforming, Modulation, and Resource Allocation

Reconfigurable intelligent surfaces (RISs) have recently emerged as a pr...

Please sign up or login with your details

Forgot password? Click here to reset