94 citations · 258 across the 10 of their papers we have counts for
13 papers
D2D-aided LoRaWAN LR-FHSS in Direct-to-Satellite IoT Networks
Alireza Maleki, Ha H. Nguyen, Ebrahim Bedeer +1
In this paper, we present a device-to-device (D2D) transmission scheme for aiding long-range frequency hopping spread spectrum (LR-FHSS) LoRaWAN protocol with application in direct…
Bit-Interleaved Coded Energy-Based Modulation with Iterative Decoding
Ali Fazeli, Ha H. Nguyen, Halim Yanikomeroglu
This paper develops a low-complexity near-optimal non-coherent receiver for a multi-level energy-based coded modulation system. Inspired by the turbo processing principle, we incor…
Multi-level Design for Multiple-Symbol Non-Coherent Unitary Constellations for Massive SIMO Systems
Son T. Duong, Ha H. Nguyen, Ebrahim Bedeer
This paper investigates non-coherent detection of single-input multiple-output (SIMO) systems over block Rayleigh fading channels. Using the Kullback-Leibler divergence as the desi…
Angle Estimation for Terahertz Ultra-Massive MIMO-Based Space-to-Air Communications
Anwen Liao, Zhen Gao, Yang Yang +3
This paper investigates terahertz ultra-massive (UM)-MIMO-based angle estimation for space-to-air communications, which can solve the performance degradation problem caused by the…
UAV Trajectory Planning in Wireless Sensor Networks for Energy Consumption Minimization by Deep Reinforcement Learning
Botao Zhu, Ebrahim Bedeer, Ha H. Nguyen +2
Unmanned aerial vehicles (UAVs) have emerged as a promising candidate solution for data collection of large-scale wireless sensor networks (WSNs). In this paper, we investigate a U…
Performance Improvement of LoRa Modulation with Signal Combining and Semi-Coherent Detection
The Khai Nguyen, Ha H. Nguyen, Ebrahim Bedeer
In this paper, we investigate performance improvements of low-power long-range (LoRa) modulation when a gateway is equipped with multiple antennas. We derive the optimal decision r…