Alert button
Picture for Ha H. Nguyen

Ha H. Nguyen

Alert button

A Tutorial on Chirp Spread Spectrum for LoRaWAN: Basics and Key Advances

Oct 16, 2023
Alireza Maleki, Ha H. Nguyen, Ebrahim Bedeer, Robert Barton

Viaarxiv icon

Low-Complexity Design and Detection of Unitary Constellations in Non-Coherent SIMO Systems for URLLC

May 04, 2023
Son T. Duong, Ha H. Nguyen, Ebrahim Bedeer, Robert Barton

Figure 1 for Low-Complexity Design and Detection of Unitary Constellations in Non-Coherent SIMO Systems for URLLC
Figure 2 for Low-Complexity Design and Detection of Unitary Constellations in Non-Coherent SIMO Systems for URLLC
Figure 3 for Low-Complexity Design and Detection of Unitary Constellations in Non-Coherent SIMO Systems for URLLC
Figure 4 for Low-Complexity Design and Detection of Unitary Constellations in Non-Coherent SIMO Systems for URLLC
Viaarxiv icon

D2D-aided LoRaWAN LR-FHSS in Direct-to-Satellite IoT Networks

Dec 08, 2022
Alireza Maleki, Ha H. Nguyen, Ebrahim Bedeer, Robert Barton

Figure 1 for D2D-aided LoRaWAN LR-FHSS in Direct-to-Satellite IoT Networks
Figure 2 for D2D-aided LoRaWAN LR-FHSS in Direct-to-Satellite IoT Networks
Figure 3 for D2D-aided LoRaWAN LR-FHSS in Direct-to-Satellite IoT Networks
Figure 4 for D2D-aided LoRaWAN LR-FHSS in Direct-to-Satellite IoT Networks
Viaarxiv icon

Bit-Interleaved Coded Energy-Based Modulation with Iterative Decoding

Nov 23, 2022
Ali Fazeli, Ha H. Nguyen, Halim Yanikomeroglu

Figure 1 for Bit-Interleaved Coded Energy-Based Modulation with Iterative Decoding
Figure 2 for Bit-Interleaved Coded Energy-Based Modulation with Iterative Decoding
Figure 3 for Bit-Interleaved Coded Energy-Based Modulation with Iterative Decoding
Figure 4 for Bit-Interleaved Coded Energy-Based Modulation with Iterative Decoding
Viaarxiv icon

Multi-level Design for Multiple-Symbol Non-Coherent Unitary Constellations for Massive SIMO Systems

Nov 17, 2022
Son T. Duong, Ha H. Nguyen, Ebrahim Bedeer

Figure 1 for Multi-level Design for Multiple-Symbol Non-Coherent Unitary Constellations for Massive SIMO Systems
Figure 2 for Multi-level Design for Multiple-Symbol Non-Coherent Unitary Constellations for Massive SIMO Systems
Figure 3 for Multi-level Design for Multiple-Symbol Non-Coherent Unitary Constellations for Massive SIMO Systems
Viaarxiv icon

RIS-Aided Cell-Free Massive MIMO Systems: Joint Design of Transmit Beamforming and Phase Shifts

Dec 13, 2021
Si-Nian Jin, Dian-Wu Yue, Ha H. Nguyen

Figure 1 for RIS-Aided Cell-Free Massive MIMO Systems: Joint Design of Transmit Beamforming and Phase Shifts
Figure 2 for RIS-Aided Cell-Free Massive MIMO Systems: Joint Design of Transmit Beamforming and Phase Shifts
Figure 3 for RIS-Aided Cell-Free Massive MIMO Systems: Joint Design of Transmit Beamforming and Phase Shifts
Figure 4 for RIS-Aided Cell-Free Massive MIMO Systems: Joint Design of Transmit Beamforming and Phase Shifts
Viaarxiv icon

Joint Cluster Head Selection and Trajectory Planning in UAV-Aided IoT Networks by Reinforcement Learning with Sequential Model

Dec 01, 2021
Botao Zhu, Ebrahim Bedeer, Ha H. Nguyen, Robert Barton, Jerome Henry

Figure 1 for Joint Cluster Head Selection and Trajectory Planning in UAV-Aided IoT Networks by Reinforcement Learning with Sequential Model
Figure 2 for Joint Cluster Head Selection and Trajectory Planning in UAV-Aided IoT Networks by Reinforcement Learning with Sequential Model
Figure 3 for Joint Cluster Head Selection and Trajectory Planning in UAV-Aided IoT Networks by Reinforcement Learning with Sequential Model
Figure 4 for Joint Cluster Head Selection and Trajectory Planning in UAV-Aided IoT Networks by Reinforcement Learning with Sequential Model
Viaarxiv icon

Concurrent Transmission and Multiuser Detection of LoRa Signals

Nov 19, 2021
The Khai Nguyen, Ha H. Nguyen, Ebrahim Bedeer

Figure 1 for Concurrent Transmission and Multiuser Detection of LoRa Signals
Figure 2 for Concurrent Transmission and Multiuser Detection of LoRa Signals
Figure 3 for Concurrent Transmission and Multiuser Detection of LoRa Signals
Figure 4 for Concurrent Transmission and Multiuser Detection of LoRa Signals
Viaarxiv icon

Angle Estimation for Terahertz Ultra-Massive MIMO-Based Space-to-Air Communications

Aug 02, 2021
Anwen Liao, Zhen Gao, Yang Yang, Ha H. Nguyen, Hua Wang, Hao Yin

Figure 1 for Angle Estimation for Terahertz Ultra-Massive MIMO-Based Space-to-Air Communications
Figure 2 for Angle Estimation for Terahertz Ultra-Massive MIMO-Based Space-to-Air Communications
Figure 3 for Angle Estimation for Terahertz Ultra-Massive MIMO-Based Space-to-Air Communications
Figure 4 for Angle Estimation for Terahertz Ultra-Massive MIMO-Based Space-to-Air Communications
Viaarxiv icon

UAV Trajectory Planning in Wireless Sensor Networks for Energy Consumption Minimization by Deep Reinforcement Learning

Aug 01, 2021
Botao Zhu, Ebrahim Bedeer, Ha H. Nguyen, Robert Barton, Jerome Henry

Figure 1 for UAV Trajectory Planning in Wireless Sensor Networks for Energy Consumption Minimization by Deep Reinforcement Learning
Figure 2 for UAV Trajectory Planning in Wireless Sensor Networks for Energy Consumption Minimization by Deep Reinforcement Learning
Figure 3 for UAV Trajectory Planning in Wireless Sensor Networks for Energy Consumption Minimization by Deep Reinforcement Learning
Figure 4 for UAV Trajectory Planning in Wireless Sensor Networks for Energy Consumption Minimization by Deep Reinforcement Learning
Viaarxiv icon