Background to these tables
[Introduction | Big
LEO Overview | Big LEO Tables | GSM Overview
| Acronyms | References | Background ]
About these tables
Tor E. Wisløff's Big LEO Tables
are now maintained by
Lloyd Wood
(L.Wood@surrey.ac.uk)
as part of Lloyd's satellite constellations.
These satellite constellation tables were created when Dr Tor E. Wisløff was
a doctoral student in Norway at the Norwegian
University of Science and Technology, in the Department
of Telematics. Tor has now successfully completed his studies
and moved to industry, leaving a trail of publications behind him.
- Dual satellite path diversity in non-geostationary
satellite systems
- Wisløff, Tor E.
Dr. Ing. thesis 1996:84 at the Norwegian University of
Science and Technology, Department of Telematics,
ISBN 82-7119-974-9, ISSN 0802-3271.
This focuses on dual satellite path diversity for
TDMA-based Big LEOs. The aim is to mitigate the result of an obstruction
of the line of sight path to a satellite by maintaing the connection with
an other satellite at the same time. This system is proposed for both
TDMA (ICO) and CDMA (Globalstar) based systems.
Here a scheme for TDMA is developed where this diversity system can be
made to work without requiring a
diplexer or a duplicated receiver/transmitter pair.
Achieving
this requires careful design of the TDMA frame structure. The thesis considers
a variety of topics related to dual satellite path diversity, ranging
from designing the TDMA structure and analysing its effect, through considerations
of signalling and control to effective resource utilisation mechanisms achieved
by considering both channel allocations and diversity.
A version of these tables forms pages 50-75 of the thesis.
- On satellite path diversity for GSM rate
compatible TDMA NGSO Big LEOs
- Wisløff, Tor E.
in Multiaccess,
Mobility and Teletraffic for Personal Communications, edited by B.
Jabbari, Godlewski and X. Lagrange, pp. 225 - 241, 1996. Published by Kluwer
Academic Publishers, ISBN 0-7923-9742-8
- Dual satellite path diversity and flexible
channel management for TDMA-based Non-geostationary satellite systems
- Wisløff, Tor E.
in International Conference
on Universal Personal Communications, September 29 - October 2, 1996,
Cambridge, Massachusetts, USA.
- Signal-processing
aspects of dual satellite path diversity for non-geostationary satellite
systems
- Wisløff, Tor E. and Skinnemoen, Harald
IEEE Nordic
Signal Processing Symposium, Espoo, Finland, September 24 - 27, 1996.
Tor's other publications
- Positioning and traffic information
by cellular radio
- Wisløff, T.E and Andresen, S.
IEEE Vehicle Navigation and Information Systems
Conference, Ottawa, 1993, pp. 287 - 290.
- Frekvensproblematikk - koding
- Wisløff, Tor E.
Digitale telenett: 4-6 januar 1993, Norske sivilingeniørers forening,
Studiesenteret. (In Norwegian.)
- SKÍNFAKSE: service integrated radio system for road traffic
- Andresen, S., Sævild, K. J. and Wisløff, T. E.
IEEE Vehicle Navigation and Information Systems Conference, Oslo, 1992, pp. 455 - 460
Lloyd Wood
(L.Wood@society.surrey.ac.uk)
last updated 17 February 1998