1. Department of Electronic and Electrical Engineering, LiFi Research and Development Centre (LRDC), University of Strathclyde, Glasgow, U.K
2. School of Engineering, Institute for Digital Communications, The University of Edinburgh, Edinburgh, U.K
3. School of Electronic and Electrical Engineering, University of Leeds, Leeds, U.K
4. Department of Engineering, Centre for Photonic Systems, Electrical Engineering Division, University of Cambridge, Cambridge, U.K
5. University of Bath, Bath, U.K