Young PhD and groundbreaking research on IoT.

TP - Driven by curiosity and a particular fondness for mobile phones, young Ngo Khac Hoang, born in 1992, decided to pursue research on the Internet of Things (IoT). He has published dozens of research papers in prestigious international scientific journals.

Dr. Ngo Khac Hoang (far left) at the Heidelberg Science Forum 2022

Making a mark in the scientific community.

Regarding his journey into scientific research, Dr. Ngo Khac Hoang shared: “I still remember the 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 - Vietnam National University, 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 from the University of Technology, Vietnam National University, Hanoi, and then received his Master's degree (valedictorian) in 2016 and his PhD in 2020 in Wireless Communication from the University of Paris-Saclay (France) - one of the world's leading universities in science and technology . He is conducting postdoctoral research at Chalmers University of Technology (Sweden). Currently, he is 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 one, making significant contributions to next-generation telecommunications technologies, such as massive MIMO technology using extremely large antennas. Becoming an assistant professor at Linköping University and being part of this research group is a recognition of the efforts, determination, and scientific achievements of this young man from Vietnam. Here, he has many opportunities for research, training, collaboration, and development in the field of information transmission and processing. His work at Linköping University encompasses three main responsibilities: research, teaching, and contributing to community development. In terms of research, he is responsible for developing research projects and securing funding to support the research group. In terms of teaching, he teaches courses to graduate students on wireless communication, 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 Q1-listed scientific journals (8 as the main author); 2 outstanding scientific reports at international conferences; 25 scientific reports published in full in the proceedings of international conferences/meetings; 2 completed international collaborative scientific projects; 4 international awards, and 5 national awards. Recently, he was one of 10 young PhDs to receive the Golden Globe Award for Science and Technology presented by the Central Youth Union.

Dr. Ngo Khac Hoang

“As a young intellectual researching and working abroad, what makes me confident and proud in front of international friends is carrying within me the Vietnamese cultural identity and a spirit of continuous learning. The qualities I have cultivated in Vietnam, such as perseverance, not being afraid of difficulties, and the ability to listen, have helped me a great deal in my journey to conquer the path of scientific research. Everyone has their own strengths and unique qualities; the important thing is to have an open mind and be ready to embrace new things to become a global citizen.”

Dr. Ngo Khac Hoang

Always look towards your homeland.

His master's thesis on caching techniques helps reduce data load in network systems by storing content closer to the user. The results of his thesis led to his first scientific papers at an international conference and one paper in a leading industry journal. His doctoral dissertation on channel-agnostic wireless communication, conducted jointly at CentraleSupélec and Huawei's research center in Paris, obtained an international patent. This research opened a new direction in wireless transceiver design, a crucial foundation for the development of advanced telecommunication systems, especially in the era of the 5G and IoT (Internet of Things ) boom.

His doctoral achievements motivated him to pursue an academic research career, focusing on the Internet of Things (IoT). He believes that in the future, communication will not only occur between people via telephone but also between sensors, devices, and machines within systems. These devices will continuously collect and exchange data with each other and with central processors to establish intelligent behaviors.

His latest work, published in the prestigious IEEE Transactions on Information Theory journal, focuses on large-scale random multiple access for the Internet of Things (IoT). According to Dr. Hoang, multiple access is one of the core issues of wireless communication, allowing many devices to be served simultaneously. Traditionally, the solution involves allocating independent units of resources (time, frequency) to each device to avoid interference. However, in IoT systems with a massive number of devices operating randomly, this solution is not feasible. Therefore, next-generation multiple access needs to allow multiple devices to send signals simultaneously, accept interference, and resolve it efficiently so that signals from different users can still be decoded.

“This study analyzes the energy efficiency limitations of such a massive multi-access system. We answer the question: When hundreds of devices (whose identities and numbers are unknown) are simultaneously transmitting on a finite resource, what is the minimum energy level required to achieve a given reliability?” said Dr. Hoang. Notably, this model is compatible with real-world IoT systems.

Young scientist Ngo Khac Hoang always cherishes his homeland and aspires to inspire young people to pursue scientific research . Currently, he is also an adjunct lecturer at the Institute for Advanced Technology and Engineering (AVITECH), University of 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.