Dr. Ngo Khac Hoang (far left) at the Heidelberg Science Forum 2022
Making a mark in the scientific community
Regarding his journey to scientific research, Dr. Ngo Khac Hoang shared: “I still remember the feeling of excitement when my family first installed a landline phone. It was like a window opening to the outside world. The mobile phone is even more magical, because of its ability to connect people everywhere. That curiosity led me to the field of electronics and telecommunications at the University of Technology - VNU Hanoi. Here, I not only learned theoretical knowledge but also had the opportunity to participate in research projects”. Hoang received his bachelor's degree (valedictorian) in Electronics and Telecommunications at the University of Technology, VNU Hanoi, then received his master's degree (valedictorian) in 2016 and his doctorate in 2020 in Radio Communications at the University of Paris-Saclay (France) - one of the world's leading schools in science and technology . He did postdoctoral research at Chalmers University of Technology (Sweden). He is currently an assistant professor at Linkping University, one of Sweden's leading academic institutions with over 40,000 students.
The telecommunications research group here is a strong research group with many contributions to new generation telecommunications technologies, such as the massive MIMO technology using a huge number of antennas. Becoming an assistant professor at Linköping University and being part of the research group is a recognition of the journey of effort, determination and scientific imprint of the young man from Vietnam. Here, he has many opportunities for research, training, cooperation and development in the field of information transmission and processing. His work at Linköping University includes three main tasks: research, teaching, and contributing to the development of the community. Regarding research, he is responsible for building research projects and applying for funding to develop the research group. Regarding teaching, he teaches courses for graduate students in wireless communications, information theory and machine learning.
Dr. Ngo Khac Hoang has made his mark in the scientific community with 1 international patent; 9 scientific articles published in international scientific journals in the Q1 category (8 articles as the main author); 2 excellent scientific reports at international conferences; 25 scientific reports published in full text in the proceedings of international conferences/seminars; 2 accepted international scientific cooperation topics; 4 international awards, 5 national awards. Recently, he was 1 of 10 young doctors to receive the Golden Globe Science and Technology Award presented by the Central Youth Union.
Dr. Ngo Khac Hoang
“As a young intellectual studying and working abroad, what makes me confident and proud in front of international friends is that I carry within me the Vietnamese cultural identity and the spirit of continuous learning. The qualities that I have cultivated in Vietnam such as perseverance, not being afraid of difficulties, and the ability to listen have helped me a lot in my journey to conquer the path of scientific research. Everyone has their own strengths and uniqueness, the important thing is to have an open mind, ready to accept new things to become a global citizen.”
Dr. Ngo Khac Hoang
Always towards home
His master's thesis on caching techniques helps reduce the load on network systems by storing content close to the user. The results of the thesis led to his first scientific papers at international conferences, and 1 paper in a leading journal in the field. His doctoral thesis on channel-agnostic wireless communications, conducted jointly at CentraleSupélec and Huawei's research center in Paris, received an international patent. The research topic opened a new direction in the design of wireless transceivers, which is an important foundation for the development of advanced telecommunications systems, especially in the era of 5G and IoT (Internet of Things ) networks.
His achievements as a doctoral student motivated him to pursue an academic research path, with a research direction on the Internet of Things. He believes that in the future, communication will not only take place between people via phones but also between sensors and devices, machines in systems. These devices continuously collect and exchange data with each other and with central processors to establish intelligent behaviors.
His latest work was published in the prestigious journal IEEE Transactions on Information Theory on random multiple access for the Internet of Things. The research focuses on massive random multiple access technology for the Internet of Things. According to Dr. Hoang, multiple access is one of the core issues of wireless communication, allowing many devices to be served at the same time. Meanwhile, the traditional solution is to divide the devices into independent units of resources (time, frequency) to avoid interference. However, in the Internet of Things system with a huge number of devices and operating randomly, this solution is not feasible. Therefore, the next generation of multiple access needs to allow many devices to send signals at the same time, accept interference, and resolve it effectively so that signals from different users can still be decoded.
“This study analyzes the energy efficiency limits of such a large multi-access system. We answer the question: When hundreds of devices (unknown in identity and number) transmit simultaneously on a finite resource unit, what is the minimum energy level to achieve a given reliability,” said Dr. Hoang. Notably, this model is compatible with real IoT systems.
Young scientist Ngo Khac Hoang always looks back to his homeland and aspires to inspire young people to do scientific research . Currently, he is also a part-time lecturer at the Advanced Institute of Engineering and Technology (AVITECH), University of Engineering and Technology - Vietnam National University, Hanoi. He is also one of the founding members and administrators of telecom-vn - a Facebook group for young Vietnamese researchers in the field of telecommunications. The group regularly shares information and organizes seminars on new research topics.
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