9 papers
Maximizing Connectivity of Uplink RIS-Assisted UAV Networks
Mohammed Saif, Shahrokh Valaee
In this paper, we present a new approach for unmanned aerial vehicle (UAV) positioning and reconfigurable intelligent surface (RIS) partitioning to enhance connectivity of uplink R…
Joint Movable Antenna Positioning and RIS Partitioning for Sum-Rate Maximization
Mohammed Saif
This paper investigates the utility of the movable antenna (MA) and reconfigurable intelligent surface (RIS) framework for downlink wireless communications. In the considered scena…
RIS Partitioning and User Clustering for Resilient Non-Orthogonal Multiple Access UAV Networks
Mohammed Saif, Shahrokh Valaee
The integration of reconfigurable intelligent surfaces (RISs) and unmanned aerial vehicles (UAVs) has emerged as a promising solution for enhancing connectivity in future wireless…
Optimizing Smart Helper Placement for Enhanced Cache Efficiency in F-RANs
Hesameddin Mokhtarzadeh, Mohammed Saif, Md. Jahangir Hossain +1
Smart helpers (SHs) have been proposed to improve content delivery delays and alleviate high fronthaul loads in fog radio access networks (F-RANs). They offer an alternative to dep…
Improving Connectivity of RIS-Assisted UAV Networks using RIS Partitioning and Deployment
Mohammed Saif, Shahrokh Valaee
Reconfigurable intelligent surface (RIS) is pivotal for beyond 5G networks in regards to the surge demand for reliable communication in unmanned aerial vehicle (UAV) networks. This…
Uni-polarized RIS Beamforming for Improving Connectivity of Multi-RIS-Assisted D2D Networks
Mohammed Saif, Mohammad Javad-Kalbasi, Shahrokh Valaee
This paper introduces a novel method to enhance the connectivity of multi-reconfigurable intelligent surface-assisted device-to-device networks, referred to as multi-RIS-assisted D…
Broad and Spectral-Efficient Beamforming for the Uni-polarized Reconfigurable Intelligent Surfaces
Mohammad Javad-Kalbasi, Mohammed Saif, Shahrokh Valaee
A reconfigurable intelligent surface (RIS) is composed of low-cost elements that manipulate the propagation environment from a transmitter by intelligently applying phase shifts to…
Smart Helper-Aided F-RANs: Improving Delay and Reducing Fronthaul Load
Hesameddin Mokhtarzadeh, Mohammed S. Al-Abiad, Md Jahangir Hossain +1
In traditional Fog-Radio Access Networks (F-RANs), enhanced remote radio heads (eRRHs) are connected to a macro base station (MBS) through fronthaul links. Deploying a massive numb…
Effectiveness of Reconfigurable Intelligent Surfaces to Enhance Connectivity in UAV Networks
Mohammed S. Al-Abiad, Mohammad Javad-Kalbasi, Shahrokh Valaee
Reconfigurable intelligent surfaces (RISs) are expected to make future 6G networks more connected and resilient against node failures, due to their ability to introduce controllabl…