David's original field of research - and the topic of his PhD thesis - was optical fibre communication, and he retains an interest in communication theory through membership of the Next Generation Multimedia Technologies (XGMT) research group. He also has a long-standing interest in the role of ICTs in development.
In recent years, however, the main focus of his research has been an exploration of the nature of information (see his Intropy blog). For this, he created and convenes (together with colleague Magnus Ramage) the DTMD (The Difference That Makes a Difference) research group.
David is currently presentation chair for T325 Technologies for Digital Media and a member of the course team presenting T324 Keeping Ahead in Information and Communication Technologies. He is a writing member of TM353, Building Successful Systems (first presentation 2015) and TM355, Communications Technology (first presentation 2016).
- T175 Networked Living: Exploring Information and Communication Technologies,
- T823 Multiservice Networks: controls,
- T822 Multiservice Networks: structures,
- T305 Digital Communications,
- T322 Digital Telecommunications,
- PT629 Digital Telecommunications: Transmission
- T102 Living with technology.