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Defence of dissertation in the field of Communications Engineering, M.Sc. (Tech.) Christopher Boyd

The title of thesis is “Physical and Control Layer Solutions for Reliable Machine-Type Random Access”

A particular challenge in 5G networks is facilitating random uplink access that is reliable within a strict latency budget. This dissertation considers control layer coding solutions which employ preallocated k-repetition patterns and successive interference cancellation (SIC) to meet ultra-reliable low-latency communication (URLLC) targets in the 5G random access channel. This work shows that deterministic repetition diversity is critical for limiting packet losses to less than five nines.

Additionally, this dissertation considers the impact of the physical layer uplink waveform on reliability. It introduces measures of time-frequency localisation (TFL) for stochastic signals which complement those traditionally used in prototype filter design. These measures characterise the interference potential between small packets of waveforms in a machine-type multiple-access scenario.

Opponents: Professor Gerald Matz, TU Wien, Austria and Professor Ming Xiao, Royal University of Technology, Sweden

Custos: Professor Olav Tirkkonen, Aalto University School of Electrical Engineering, Department of Communications and Networking.

Thesis web page

Contact information: Christopher Boyd, [email protected], +358458651987

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