Cooperative Beam Routing for Multi-IRS Aided Communication

@article{Mei2021CooperativeBR,
  title={Cooperative Beam Routing for Multi-IRS Aided Communication},
  author={Weidong Mei and Rui Zhang},
  journal={IEEE Wireless Communications Letters},
  year={2021},
  volume={10},
  pages={426-430}
}
  • Weidong Mei, Rui Zhang
  • Published 26 October 2020
  • Computer Science, Engineering, Mathematics
  • IEEE Wireless Communications Letters
Intelligent reflecting surface (IRS) has been deemed as a transformative technology to achieve smart and reconfigurable environment for wireless communication. This letter studies a new IRS-aided communication system, where multiple IRSs assist in the communication between a multi-antenna base station (BS) and a remote single-antenna user by multi-hop signal reflection. Specifically, by exploiting the line-of-sight (LoS) link between nearby IRSs, a multi-hop cascaded LoS link between the BS and… 

Figures from this paper

Multi-Beam Multi-Hop Routing for Intelligent Reflecting Surfaces Aided Massive MIMO
  • Weidong Mei, Rui Zhang
  • Computer Science, Mathematics
    IEEE Transactions on Wireless Communications
  • 2021
TLDR
An efficient recursive algorithm is proposed to partially enumerate the feasible routing solutions for a new multi-IRS aided massive multiple-input multiple-output (MIMO) system and achieves near-optimal performance with low complexity and outperforms other benchmark schemes.
Distributed Beam Training for Intelligent Reflecting Surface Enabled Multi-Hop Routing
TLDR
This letter considers a new multi-IRS aided wireless network where a cascaded line-of-sight (LoS) link is established between the base station and a remote user by leveraging the multi-hop signal reflection of selected IRSs.
Intelligent Reflecting Surface for Multi-Path Beam Routing with Active/Passive Beam Splitting and Combining
  • Weidong Mei, Rui Zhang
  • Computer Science, Engineering
    ArXiv
  • 2021
TLDR
This letter considers the downlink transmission from a multi-antenna base station (BS) to a singleantenna user, by exploiting the cooperative passive beamforming and line-of-sight (LoS) path diversity gains of multiIRS signal reflection.
Joint Power Allocation and Passive Beamforming Design for IRS-Assisted Physical-Layer Service Integration
TLDR
This paper proposes to apply intelligent reflecting surface (IRS) to the physical-layer service integration (PHY-SI) system, where a single-antenna access point (AP) integrates two sorts of service messages, i.e., multicast message and confidential message, via superposition coding to serve multiple single-Antenna users.
Intelligent Reflecting Surface-Aided Wireless Communications: A Tutorial
TLDR
This paper provides a tutorial overview of IRS-aided wireless communications, and elaborate its reflection and channel models, hardware architecture and practical constraints, as well as various appealing applications in wireless networks.
Reconfigurable Intelligent Surface Aided Constant-Envelope Wireless Power Transfer
TLDR
A RIS aided multiuser multiple-input multiple-output (MIMO) wireless power transfer (WPT) system, where the transmitter is equipped with a constant-envelope analog beamformer and a low complexity iterative algorithm based on both alternating direction method of multipliers (ADMM and SCA techniques is proposed to solve this problem.
Intelligent Reflecting Surface Aided Wireless Networks: From Single-Reflection to Multi-Reflection Design and Optimization
TLDR
A tutorial overview of multi-IRS aided wireless systems faces more complex design issues as well as new practical challenges for implementation as compared to the conventional single-irS counterpart, in terms of IRS reflection optimization, channel acquisition, as wellAs IRS deployment and association/selection.
Secure multigroup multicast communication systems via intelligent reflecting surface
TLDR
Simulation results show that the proposed SDR and SOCP schemes require half or less transmit power than the scheme without IRS, which demonstrates the advantages of introducing IRS and the effectiveness of the proposed methods.
Double Intelligent Reflecting Surface-assisted Multi-User MIMO mmWave Systems with Hybrid Precoding
TLDR
This work aims to solve a weighted sum rate maximization problem by jointly optimizing the digital precoding at the transmitter and the analog phase shifters at the IRS, subject to the minimum achievable rate constraint.
Reconfigurable Intelligent Surface Aided Constant-Envelope Wireless Power Transfer
TLDR
A novel problem to maximize the total received power of all the users is formulated by jointly optimizing the beamformer at transmitter and the phase shifts at the RISs, subject to the individual minimum received power constraints of users.
...
1
2
...

References

SHOWING 1-10 OF 16 REFERENCES
Cooperative Double-IRS Aided Communication: Beamforming Design and Power Scaling
TLDR
Simulation results validate that the performance of deploying two cooperative IRSs is significantly better than that of deploying one IRS given a sufficient total number of IRS elements, and show that deploying two Cooperative IRSs with in total can yield a power gain of order.
Multicell MIMO Communications Relying on Intelligent Reflecting Surfaces
TLDR
This paper proposes to invoke an IRS at the cell boundary of multiple cells to assist the downlink transmission to cell-edge users, whilst mitigating the inter-cell interference, which is a crucial issue in multicell communication systems.
Wireless Communication via Double IRS: Channel Estimation and Passive Beamforming Designs
TLDR
Numerical results show that deploying two cooperative IRSs with the proposed channel estimation and passive beamforming designs achieves significant rate enhancement as compared to the conventional case of single IRS deployment.
Towards Smart and Reconfigurable Environment: Intelligent Reflecting Surface Aided Wireless Network
TLDR
This article addresses the key challenges in designing and implementing the new IRS-aided hybrid (with both active and passive components) wireless network, as compared to the traditional network comprising active components only.
Robust and Secure Wireless Communications via Intelligent Reflecting Surfaces
TLDR
Simulation results show that IRSs can significantly improve the system secrecy performance compared to conventional architectures without IRS, and unveil that, for physical layer security, uniformly distributing the reflecting elements among multiple IRSs is preferable over deploying them at a single IRS.
Intelligent Reflecting Surface-Aided Wireless Communications: A Tutorial
TLDR
This paper provides a tutorial overview of IRS-aided wireless communications, and elaborate its reflection and channel models, hardware architecture and practical constraints, as well as various appealing applications in wireless networks.
Reconfigurable Intelligent Surfaces for Energy Efficiency in Wireless Communication
TLDR
The adoption of a reconfigurable intelligent surface (RIS) for downlink multi-user communication from a multi-antenna base station is investigated and the results show that the proposed RIS-based resource allocation methods are able to provide up to 300% higher energy efficiency in comparison with the use of regular multi-Antenna amplify-and-forward relaying.
Reconfigurable Intelligent Surface Aided NOMA Networks
TLDR
A system for serving paired power-domain non-orthogonal multiple access (NOMA) users by designing the passive beamforming weights at the RISs is conceived, and the proposed RIS-aided NOMA network has superior network performance compared to its orthogonal counterpart.
Asymptotic Max-Min SINR Analysis of Reconfigurable Intelligent Surface Assisted MISO Systems
TLDR
Simulation results show that RISs can outperform half-duplex relays with a small number of passive reflecting elements while large RISs are needed to outperform full-duple relays.
Wireless Communications Through Reconfigurable Intelligent Surfaces
TLDR
The fundamental differences with other technologies, the most important open research issues to tackle, and the reasons why the use of reconfigurable intelligent surfaces necessitates to rethink the communication-theoretic models currently employed in wireless networks are elaborated.
...
1
2
...