Performance improvement of high altitude platform using concentric circular antenna array based on particle swarm optimization

AM Ismaiel, E Elsaidy, Y Albagory, HA Atallah… - … -International Journal of …, 2018 - Elsevier
This paper proposes a beamforming technique based on finding the optimum current
weights using comprehensive learning particle swarm optimizer (CLPSO) for side-lobe level …

Beam-pointing algorithm for contiguous high-altitude platform cell formation for extended coverage

SC Arum, D Grace, PD Mitchell… - 2019 IEEE 90th …, 2019 - ieeexplore.ieee.org
In this paper, we propose a scheme for beam-pointing from a high altitude platform (HAP) for
contiguous coverage delivery within an extended service area. The scheme, which …

Deep reinforcement learning evolution algorithm for dynamic antenna control in multi-cell configuration HAPS system

S Yang, M Bouazizi, T Ohtsuki, Y Shibata… - Future Internet, 2023 - mdpi.com
In this paper, we propose a novel Deep Reinforcement Learning Evolution Algorithm
(DRLEA) method to control the antenna parameters of the High-Altitude Platform Station …

Handover performance of unstable-yaw stratospheric high-altitude stations

Y Albagory, M Nofal, A Ghoneim - Wireless Personal Communications, 2015 - Springer
Stratospheric platform (SP) is a new technique for providing mobile and data
communications and is capable to add many advantages to the users compared to …

Delivering extended cellular coverage and capacity using high-altitude platforms

SC Arum, D Grace, PD Mitchell - Electronics, 2022 - mdpi.com
Interest in delivering cellular communication using a high-altitude platform (HAP) is
increasing partly due to its wide coverage capability. In this paper, we formulate analytical …

Dynamic antenna control for HAPS using mean field reinforcement learning in multi-cell configuration

S Yang, M Bouazizi, T Ohtsuki - ICC 2023-IEEE International …, 2023 - ieeexplore.ieee.org
In this paper, we propose a Mean Field reinforcement learning (MFRL) method for dynamic
antenna control in High-Altitude-Platform-Station (HAPS) communication system with Multi …

Dynamic antenna control for HAPS using geometry-based method in multi-cell configuration

S Yang, M Bouazizi, T Ohtsuki… - 2022 IEEE 95th …, 2022 - ieeexplore.ieee.org
In this research, we propose a novel antenna control method for reducing the number of low
throughput User Equipments (UEs) caused by the movement and rotation of High-altitude …

Performance enhancement of high-altitude platforms wireless sensor networks using concentric circular arrays

Y Albagory, O Said - AEU-International Journal of Electronics and …, 2015 - Elsevier
In this paper, a concentric circular antenna array (CCA) is proposed to improve the
performance of High-Altitude Platform Wireless Sensor Network (HAPWSN). This CCA is …

A geometric method for computing the nodal distance distribution in mobile networks

KB Baltzis - Progress In Electromagnetics Research, 2011 - jpier.org
This paper presents a geometrically based method for the calculation of the node-to-node
distance distribution function in circular-shaped networks. In our approach, this function is …

A novel design of arbitrary shaped cells for efficient coverage from high altitude platforms

Y Albagory - Progress In Electromagnetics Research Letters, 2008 - jpier.org
This paper proposes a novel beamforming technique to form an arbitrary-shaped cell for the
high altitude platforms (HAPs) mobile communications. The new technique is based on …