Mr. Tim Tozer MA (Cantab), CEng, FIET
Senior Lecturer
Email: tct1@ohm.york.ac.uk
Tel: +44 (0)1904 32 2347
Fax: +44 (0)1904 32 3224
Research Area: Communications Group
Tim is member of the Communications Research Group, having previously been Group Leader, and lectures in communications topics within the Department. His main research activity concerns communications to/from High Altitude Platforms (HAPs), and he was Chair of COST297 . He also teaches externally on satellite communications, and runs the IET Summer School on Satcoms and the annual York VSATs Course. Tim's previous background includes working for the UK Government designing satellite communication systems.
Research Interests:
High Altitude Platform (HAP) communications; Satellite communications; wireless communication systems.
Teaching Interests:
More or less anything to do with communications, but especially satellite communications.
Other Interests:
For something completely different, Tim enjoys playing the piano, and specialises in accompanying singers in classical Lieder and Art Songs.
Latest 30 Publications
- , High Altitude Platforms (HAPs) to meet future capacity requirements, IET Milsatcoms, London, June, 2010
- , Beyond Line of Sight - A 2020 Vision, International Communications Satellite Systems Conference - ICSSC 2009, Edinburgh,
ISBN 978-1-84919-132, June, 2009 - , Development of Dual Beam Tracking Lens Antenna for Satellite Communications to Trains., 27th International Communications Satellite Systems Conference (ICSSC 2009)., Edinburgh, June, 2009
- , COST297 Research for HAPs & their Applications, GLOBECOM'08, New Orleans, November, 2008
- , High Altitude Platforms for VHDR in-theatre Communications, IET seminar on military satellite communications systems 2008, June, 2008
- , A WiMAX Payload for High Altitude Platform Experimental Trials., EURASIP Journal on Wireless Communications and Networking: Special Issue on etc., 2008(498517)2008
- , Evaluation of the Effects of User Antenna Pointing Error in Multiple High Altitude Platform Systems, IET Communications, 1(3):424-9, June, 2007
- , Lens antennas for multi-satellite and multi-frequency band communications on trains., IET Seminar: "Broadband on Trains", London, February, 2007
- , Acoustic echo cancellation using frequency-domain spline identification, IEEE Trans. Signal Processing, 55(2):585-593, Feb., 2007
- , Capacity Enhancement through Efficient Constellation Planning for Multiple HAPs, First HAPCOS-COST297 Workshop, York, UK, October, 2006
- , High Altitude Platforms for Broadband Services, The IEE Wireless Broadband Conference 2006, London, April, 2006
- , High Altitude Platform System Performance in Rainy Conditions, IEEE Transactions, Antennas and Propagation, Acc May, 2006
- , Effect of Antenna Beam Pattern and Layout on Cellular Performance in High Altitude Platform Communications., International Journal of Wireless Personal Communications (Special Issue), 35(-1):35-51,
0929-6212 (paper), October, 2005 - , Emergency Communications from High Altitude Platforms, International Workshop on High Altitude Platforms (WHAPS), Athens, Greece, September, 2005
- , The effectiveness of link outage tolerance as a fade mitigation technique, European Wireless, Nicosia, Cyprus, April, 2005
- , Improving the System capacity of Broadband Services Using Multiple High Altitude Platforms, IEEE Transactions on Wireless Communications, 4(2):700-9, March, 2005
- , Spectral domain B-spline identification in acoustic echo cancellation, ICASSP'2005, US, March, 2005
- , Performance of Multiple HAPs using Directive HAP and User Antennas, International Journal of Wireless Personal Communications, 32(3):275-99, February, 2005
- , Improved quality of service in future satellite systems through effective medium access control, IEE Seminar on: The end-to-end challenges of broadband via satellite, London, UK, January, 2005
- , Multiplication-free division of complex numbers, Sixth IMA Conference on "Mathematics in Signal Processing", 211-214, Cirencester, UK, Dec., 2004
- , Controlling the Capacity and QoS of Multiple HAP Configurations, Wireless and Personal Multimedia Communications (WPMC'04) Conference, September, 2004
- , Two-Way Registration: A Fast Handoff Scheme for IPv4 Macro-Mobility Management, The 15th IEEE International Symposium on Personal Indoor and Mobile Radio Communications, Barcelona, September, 2004
- , Adaptation of ITU Recommended Antenna Pattern for Prediction of Multi-Cell Co-Channel Interference in High Altitude Platform Communications in the 47/48 GHz Band., The Seventh International Symposium on WIRELESS PERSONAL MULTIMEDIA COMMUNICATIONS (WPMC), Abano Terme, Italy, September, 2004
- , Frequency Estimation in Multipath Rayleigh-Sparse-Fading channels, IEEE Transaction on Wireless Communications, 3(5):1711-1720, Sept, 2004
- , Adaptive burst targeted demand assignment multiple access (BTDAMA) for geostationary satellite systems, IEEE Personal, Indoor and Mobile Radio Communications Conference, Barcelona, Spain, September, 2004
- , ML frequency estimation in systems with transmit diversity: pilot signals, complexity and accuracy, PIMRC 2004, Barcelona, Spain, September, 2004
- , Box-Constrained Multiuser Detection based on Multiplication-Free Coordinate Descent Optimisation, SPAWC'2004, Lisbon, Portugal, July, 2004
- , Novel signal processing technique for real-time solution of the LS problem, 155-158, London, UK, June, 2004
- , Broadband Communications from Aerial Platform Networks, IST Mobile Summit, Lyon, France, June, 2004
- , Local splines in signal processing: low complexity, high accuracy, 160-164, London, UK, June, 2004
- , Polynomial spline approximation of Clarkes model, IEEE Transactions on Signal Processing, 52(5):1198 1208, May, 2004