Corpus ID: 236493376

Fast Beam Training for RIS-Assisted Uplink Communication

  title={Fast Beam Training for RIS-Assisted Uplink Communication},
  author={Chandradeep Singh and Kamal Singh and K. H. Liu},
  • Chandradeep Singh, Kamal Singh, K. H. Liu
  • Published 2021
  • Computer Science, Engineering, Mathematics
  • ArXiv
In this work, we propose a beam training codebook for Reconfigurable Intelligent Surface (RIS) assisted mmWave uplink communication. Beam training procedure is important to establish a reliable link between user node and Access point (AP). A codebook based training procedure reduces the search time to obtain best possible phase shift by RIS controller to align incident beam at RIS in the direction of receiving node. We consider a semi passive RIS to assist RIS controller with a feedback of… Expand

Figures and Tables from this paper


Hierarchical Codebook Design for Beamforming Training in Millimeter-Wave Communication
This paper devise an efficient hierarchical codebook by jointly exploiting sub-array and deactivation (turning-off) antenna processing techniques, where closed-form expressions are provided to generate the codebook. Expand
Enhanced Random Access and Beam Training for Millimeter Wave Wireless Local Networks With High User Density
Analytical and simulation results show that both the SA-BFT and the SBA-B FT can significantly improve BF training efficiency, which is beneficial to the optimization design of dense user wireless networks based on the IEEE 802.11ay standard and mmWave technology. Expand
Design and Analysis of Multi-User Association and Beam Training Schemes for Millimeter Wave Based WLANs
Simulations are conducted to show that the proposed ABS, DAA, and TDCF/TBCA mechanisms outperform existing methods; whereas higher spectrum efficiency can be achieved by proposed non-slotted frame structure compared to conventional slotted structure. Expand
Random access preamble design for 5G millimeter-wave cellular systems with multiple beams
It is shown by simulation that the proposed RAP is well-suited for mm-wave cellular systems with multiple beams because of its high detection probability in a multi-user environment and shorter processing time. Expand
Random Beamforming in Millimeter-Wave NOMA Networks
Stochastic geometry is used to characterize the performance of the proposed mmWave-NOMA transmission scheme by using key features of mmWave systems, i.e., that mmWave transmission is highly directional and potential blockages will thin the user distribution. Expand
Fast millimeter wave beam alignment
This paper presents Agile-Link, a new protocol that can find the best mmWave beam alignment without scanning the space, and shows that it reduces beam alignment delay by orders of magnitude. Expand
A Hybrid-Grant Random Access Scheme in Massive MIMO Systems for IoT
This work proposes a new RA scheme that inserts a base station (BS) broadcasting message after user equipments (UEs) transmitting pilots that can obtain a significant gain on the spectral efficiency compared with grant-free RA, especially for ZF receivers. Expand
Towards Smart and Reconfigurable Environment: Intelligent Reflecting Surface Aided Wireless Network
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. Expand
Fast Beam Training for IRS-Assisted Multiuser Communications
An intelligent reflecting surface (IRS)-assisted multiuser communication system, where an IRS is deployed to provide virtual line-of-sight (LoS) links between an access point (AP) and multiple users, is considered and a new multi-beam training method is proposed. Expand