Hidden Markov model based drone sound recognition using MFCC technique in practical noisy environments

L Shi, I Ahmad, YJ He, KH Chang - Journal of Communications …, 2018 - ieeexplore.ieee.org
The development of drones has captured the attention of hobbyists and investors alike;
drones now have greater commercial and military applications owing to their relatively small …

Co-Channel Interference Management for Heterogeneous Networks Using Deep Learning Approach

I Ahmad, S Hussain, SN Mahmood, H Mostafa… - Information, 2023 - mdpi.com
The co-channel interference for mobile users (MUs) of a public safety network (PSN) in the
co-existence of heterogeneous networks such as unmanned aerial vehicles (UAVs) and LTE …

3D optimal surveillance trajectory planning for multiple UAVs by using particle swarm optimization with surveillance area priority

H Teng, I Ahmad, A Msm, K Chang - IEEE Access, 2020 - ieeexplore.ieee.org
The use of the unmanned aerial vehicle (UAV) has been regarded as a promising technique
in both military and civilian applications. However, due to the lack of relevant laws and …

Classification, positioning, and tracking of drones by HMM using acoustic circular microphone array beamforming

J Guo, I Ahmad, KH Chang - EURASIP Journal on Wireless …, 2020 - Springer
This paper addresses issues with monitoring systems that identify and track illegal drones.
The development of drone technologies promotes the widespread commercial application of …

LTE-railway user priority-based cooperative resource allocation schemes for coexisting public safety and railway networks

I Ahmad, W Chen, K Chang - IEEE Access, 2017 - ieeexplore.ieee.org
This paper addresses the issues of resource allocation and co-channel interference
management for coexistence of, and cooperation between, two long term evolution (LTE) …

SVM-based drone sound recognition using the combination of HLA and WPT techniques in practical noisy environment

Y He, I Ahmad, L Shi, KH Chang - KSII Transactions on Internet and …, 2019 - koreascience.kr
In recent years, the development of drone technologies has promoted the widespread
commercial application of drones. However, the ability of drone to carry explosives and other …

Mission critical user priority-based random access scheme for collision resolution in coexisting PS-LTE and LTE-M networks

I Ahmad, K Chang - IEEE Access, 2019 - ieeexplore.ieee.org
Random-access channels (RACHs) are designed to establish a connection between the
user equipments (UEs) and the network. However, the current long-term evolution (LTE) …

Public safety users' priority‐based energy and time‐efficient device discovery scheme with contention resolution for ProSe in third generation partnership project long …

Z Kaleem, Y Li, KH Chang - IET Communications, 2016 - Wiley Online Library
A device‐to‐device (D2D) discovery scheme is key enabler for proximity‐based services in
third generation partnership project long‐term evolution‐advanced systems for public safety …

Mission-critical user priority-based cooperative resource allocation schemes for multi-layer next-generation public safety networks

I Ahmad, KH Chang - Physical communication, 2020 - Elsevier
Abstract The Republic of Korea became the first country in the world to have next-generation
long term evolution (LTE) public safety networks, and South Korea's evolution in critical …

Downlink power allocation strategy for next-generation underwater acoustic communications networks

I Ahmad, KH Chang - Electronics, 2019 - mdpi.com
The increasing interest in next-generation underwater acoustic communications networks is
due to vast investigation of oceans for oceanography, commercial operations in maritime …