57 citations · 107 across the 16 of their papers we have counts for
17 papers
Dynamic Prioritization and Adaptive Scheduling using Deep Deterministic Policy Gradient for Deploying Microservice-based VNFs
Swarna B. Chetty, Hamed Ahmadi, Avishek Nag
The Network Function Virtualization (NFV)-Resource Allocation (RA) problem is NP-Hard. Traditional deployment methods revealed the existence of a starvation problem, which the rese…
Cooperative NOMA-Based User Pairing for URLLC: A Max-Min Fairness Approach
Fateme Salehi, Naaser Neda, Mohammad-Hassan Majidi +1
In this paper, cooperative non-orthogonal multiple access (C-NOMA) is considered in short packet communications with finite blocklength (FBL) codes. The performance of a decode-and…
Fair Pricing In Heterogeneous Internet of Things Wireless Access Networks Using Crowdsourcing
Vahid Haghighatdoost, Siavash Khorsandi, Hamed Ahmadi
Price and the quality of service are two key factors taken into account by wireless network users when they choose their network provider. The recent advances in wireless technolog…
Towards scalable user-deployed ultra-dense networks: Blockchain-enabled small cells as a service
Emanuele Di Pascale, Hamed Ahmadi, Linda Doyle +1
Neutral Host Small Cell Providers (SCP) represent a key element of the 5G vision of ultra-dense mobile networks. However, current business models mostly focus on multi-year agreeme…
Over the Sea UAV Based Communication
Gianluca Fontanesi, Hamed Ahmadi, Anding Zhu
Unmanned Aerial Vehicle (UAV) aided wireless networks have been recently envisioned as a solution to provide a reliable, low latency cellular link for search and rescue operations…
Saving Lives at Sea with UAV-assisted Wireless Networks
Gianluca Fontanesi, Anding Zhu, Hamed Ahmadi
In this paper, we investigate traits and trade-offs of a system combining UAVs with BS or C-RAN for extending the terrestrial wireless coverage over the sea in emergency situations…
Resilience of airborne networks
Hamed Ahmadi, Gianluca Fontanesi, Konstantinos Katzis +2
Networked flying platforms can be used to provide cellular coverage and capacity. Given that 5G and beyond networks are expected to be always available and highly reliable, resilie…
A Novel Airborne Self-organising Architecture for 5G+ Networks
Hamed Ahmadi, Konstantinos Katzis, Muhammad Zeeshan Shakir
Network Flying Platforms (NFPs) such as unmanned aerial vehicles, unmanned balloons or drones flying at low/medium/high altitude can be employed to enhance network coverage and cap…
Defining and Surveying Wireless Link Virtualization and Wireless Network Virtualization
Jonathan van de Belt, Hamed Ahmadi, Linda E. Doyle
Virtualization is a topic of great interest in the area of mobile and wireless communication systems. However the term virtualization is used in an inexact manner which makes it di…
LSA-Advanced and C-RAN: A (5G) Romance of Many Dimensions
Elma Avdic, Irene Macaluso, Hamed Ahmadi +4
We examine the dimensional limitations of Licensed Shared Access (LSA) regulatory framework for spectrum sharing and propose a solution for its more dynamic implementation. We cons…
Substitutability of Spectrum and Cloud-based Antennas in Virtualised Wireless Networks
Hamed Ahmadi, Irene Macaluso, Ismael Gomez +2
Some of the new trends emerging in future wireless networks enable a vastly increased fluidity in accessing a wide range of resources, thus supporting flexible network composition…
Energy and Spectral Efficiency Gains From Multi-User MIMO-based Small Cell Reassignments
Danny Finn, Hamed Ahmadi, Rouzbeh Razavi +2
In this work we investigate the reassignment of User Equipments (UEs) between adjacent small cells to concurrently enable spatial multiplexing gains through Multi-User MIMO (MU-MIM…
5G Waveforms for Overlay D2D Communications: Effects of Time-Frequency Misalignment
Quentin Bodinier, Arman Farhang, Faouzi Bader +3
This paper analyses a scenario where a Device-To-Device (D2D) pair coexists with an Orthogonal Frequency Division Multiplexing (OFDM) based incumbent network. D2D transmitter commu…
Simulating Dense Small Cell Networks
Pedro Alvarez, Carlo Galiotto, Jonathan van de Belt +3
Through massive deployment of additional small cell infrastructure, Dense Small cell Networks (DSNs) are expected to help meet the foreseen increase in traffic demand on cellular n…
Optimization of Demand Hotspot Capacities using Switched Multi-Element Antenna Equipped Small Cells
Hamed Ahmadi, Danny Finn, Rouzbeh Razavi +2
This paper presents switched Multi- Element Antennas (MEAs) as a simple, yet effective, method of enhancing the performance of small cell heterogeneous networks and compensating fo…
A Prioritised Traffic Embedding Mechanism enabling a Public Safety Virtual Operator
Jonathan van de Belt, Hamed Ahmadi, Linda E. Doyle +1
Public Protection and Distaster Relief (PPDR) services can benefit greatly from the availability of mobile broadband communications in disaster and emergency scenarios. While undou…
A Dynamic Embedding Algorithm for Wireless Network Virtualization
Jonathan van de Belt, Hamed Ahmadi, Linda E. Doyle
Wireless network virtualization enables multiple virtual wireless networks to coexist on shared physical infrastructure. However, one of the main challenges is the problem of assig…