An Improved Path-Loss Model for Reconfigurable-Intelligent-Surface-Aided Wireless Communications and Experimental Validation

Jeong, Jungi; Oh, Jun Hwa; Lee, Seung Yoon; Park, Yuntae; Wi, Sang-Hyuk

doi:10.1109/access.2022.3205117

Cited by 30 publications

(9 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The specific design and configuration of the RIS, as well as the signal frequency and incident angles, can affect the efficiency of the signal reflection and the resulting path loss. In [ 49 , 50 , 51 ], some path loss models were proposed to improve the path loss.…”

Section: V2x and Ris: Vision Benefits And Challengesmentioning

confidence: 99%

Empowering the Vehicular Network with RIS Technology: A State-of-the-Art Review

Naaz,

Nauman,

Khurshaid

et al. 2024

Sensors

View full text Add to dashboard Cite

Reconfigurable intelligent surfaces (RIS) are expected to bring about a revolutionary transformation in vehicular networks, thus paving the way for a future characterized by connected and automated vehicles (CAV). An RIS is a planar structure comprising many passive elements that can dynamically manipulate electromagnetic waves to enhance wireless communication by reflecting, refracting, and focusing signals in a programmable manner. RIS exhibits substantial potential for improving vehicle-to-everything (V2X) communication through various means, including coverage enhancement, interference mitigation, improving signal strength, and providing additional layers of privacy and security. This article presents a comprehensive survey that explores the emerging opportunities arising from the integration of RIS into vehicular networks. To examine the convergence of RIS and V2X communications, the survey adopted a holistic approach, thus highlighting the potential benefits and challenges of this combination. In this study, we examined several applications of RIS-aided V2X communication. Subsequently, we delve into the fundamental emerging technologies that are expected to empower vehicular networks, encompassing mobile edge computing (MEC), non-orthogonal multiple access (NOMA), millimeter-wave communication (mmWave), Artificial Intelligence (AI), and visible light communication (VLC). Finally, to stimulate further research in this domain, we emphasize noteworthy research challenges and potential avenues for future exploration.

show abstract

Section: V2x and Ris: Vision Benefits And Challengesmentioning

confidence: 99%

Empowering the Vehicular Network with RIS Technology: A State-of-the-Art Review

Naaz,

Nauman,

Khurshaid

et al. 2024

Sensors

View full text Add to dashboard Cite

show abstract

“…The authors numerically analyzed the performance of the unit cell. In [133], the authors proposed an improved pathloss model suitable for RIS-aided wireless communications. The authors also fabricated RIS and the RIS consisted of 576-unit cells operating at 29 GHz.…”

Section: Figure 30 Ris Layout (Images Extracted From the Work Present...mentioning

confidence: 99%

Review Paper on Hardware of Reconfigurable Intelligent Surfaces

2023

View full text Add to dashboard Cite

Recently reconfigurable intelligent surface (RIS) has attracted great attention because it can create a smart wireless environment. Hence it can enhance the capacity and coverage of the wireless network significantly. A thorough review of RISs has been presented in this paper focusing on the hardware aspect of the RIS. Beyond-5G/6G communication will have a smart propagation environment, where RIS can be used for such communications. RIS consists of various small unit cells. The unit cells should have some tunning mechanism so that the incoming waves can be reflected or transmitted in the desired direction. It is possible to tune the impedance of the unit cells using PIN diodes, varactor didoes, microelectromechanical (MEMS), thermal, and other ways. In this paper, initially, the background of RIS has been discussed where RIS is going to play a significant role in beyond-5G/6G communications. We have also added the theoretical background of RIS and motivations to writing this paper. After that several published papers in the literature have been presented so that the readers can get an overall idea about the RIS and its hardware. Hence, this paper will be very useful for practitioner engineers and researchers. RISs have been presented in various tables and various parameters have been presented. We have discussed challenges and solutions for the hardware of the RIS design. We have also discussed potential research and research gap that can be explored in the future. Lastly, we have added a conclusion for this review paper.INDEX TERMS Reconfigurable intelligent surface (RIS), beyond-5G/6G communication, reflectarray, PIN diode, varactor diode.

show abstract

“…In [24], a 1-bit RIS was proposed to aid wireless communications to overcome path loss and shadowing. In [25], the authors proposed an improved path-loss model suitable for RIS-aided wireless communications.…”

Section: Literature Surveymentioning

confidence: 99%

Reconfigurable Metasurface: Enabling Tunable Reflection in 6G Wireless Communications

Selvaraj,

Vijay,

Anbazhagan

et al. 2023

Sensors

View full text Add to dashboard Cite

With the continuous advancement of technology, there is an increasing need for innovative solutions that can handle complex applications such as haptic communications, Internet of Things for smart cities, automation, and manufacturing. One technology that has received much attention is the phase reconfigurable metasurface for reconfigurable intelligent surfaces (RISs). The RIS demands low-power consumption, simple configuration, angular stability, and polarization insensitivity. The use of phase reconfigurable metasurfaces provides benefits such as low cost, low power consumption, and improved communication coverage and quality. This article introduces a reconfigurable combined-loop metasurface that can effectively manipulate phase reflection. This is achieved by incorporating four PIN diodes between two meta-atoms of a 2 × 2 periodic array within a single-layer metallic structure. By controlling the state of the PIN diodes, which can be switched into 16 different states, the metasurface can achieve various phase reflections. The proposed structure has validated a 32× 32 metasurface through numerical simulations and experiments that exhibit promising results, demonstrating its potential for use in 6G applications.

show abstract

An Improved Path-Loss Model for Reconfigurable-Intelligent-Surface-Aided Wireless Communications and Experimental Validation

Cited by 30 publications

References 48 publications

Empowering the Vehicular Network with RIS Technology: A State-of-the-Art Review

Empowering the Vehicular Network with RIS Technology: A State-of-the-Art Review

Review Paper on Hardware of Reconfigurable Intelligent Surfaces

Reconfigurable Metasurface: Enabling Tunable Reflection in 6G Wireless Communications

Contact Info

Product

Resources

About