Imperial College London


Faculty of EngineeringDyson School of Design Engineering








ChemistrySouth Kensington Campus





Andrew Cullen is currently a PhD candidate at the Dyson School of Design Engineering at Imperial College. He is holder of a 2020 IBM PhD Fellowship. He joined Imperial in 2019 under the supervision of Professor Robert Shorten, following a year of research with Professor Shorten in University College Dublin. Prior to this he received the BSc in Electronic and Electrical Engineering and the ME in Electronic and Computer Engineering, both with First Class Honours from University College Dublin. His PhD research revolves around distributed algorithms and trust, including various aspects of Machine Learning as well as Distributed Ledger Technology and its wide range of potential applications, particularly in the Smart City and IoT settings.

In 2013 he received the Gold Medal for Applied Maths for achieving the highest Applied Maths grade in Ireland in the Leaving Certificate state examinations. He entered University College Dublin with the UCD Entrance Scholarship, and went on to be awarded numerous additional scholarships including the BE stage 2 scholarship and stage 4 scholarship. In 2016 he received the McGuinn Irish Scholarship, fully funding a semester of study at Villanova University, Pennsylvania. In 2017 he was awarded the UCD Intel Masters scholarship for top of class grades in his undergraduate degree and entered the ME Electronic and Computer Engineering program. Most recently, he was awarded the 2020 IBM PhD Fellowship.

Since beginning his postgraduate research, he has published papers in the IEEE Internet of Things Journal, IEEE Transactions on Intelligent Transportation Systems, and top tier conferences such as IEEE Conference on Decision and Control and IEEE Intelligent Transportation Systems Conference. 



Cullen A, Zhao L, Vigneri L, et al., 2023, Improving quality of service for users of leaderless DAG-based distributed ledgers, Distributed Ledger Technologies: Research and Practice, Vol:2, ISSN:2769-6472, Pages:1-18

Cullen A, Ferraro P, Sanders W, et al., 2022, Access control for distributed ledgers in the internet of things: a networking approach, Ieee Internet of Things Journal, Vol:9, ISSN:2327-4662, Pages:2277-2292

OVerko R, Ordonez-Hurtado R, Zhuk S, et al., 2022, Spatial positioning token (SPToken) for smart mobility, Ieee Transactions on Intelligent Transportation Systems, Vol:23, ISSN:1524-9050, Pages:1529-1542

Cullen A, Ferraro P, King C, et al., 2020, On the Resilience of DAG-Based Distributed Ledgers in IoT Applications, Ieee Internet of Things Journal, Vol:7, ISSN:2327-4662, Pages:7112-7122

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