Eurofix : Ternary modulation and error control coding

Title

Eurofix : Ternary modulation and error control coding

 Author

De Koning, P.A.

Contributor

Offermans, G.W.A. (mentor)
Breeuwer, E.J. (mentor)
Weber, J.H. (mentor)

Faculty

Electrical Engineering, Mathematics and Computer Science

 Department

Telecommunicatie- en Verkeersbegeleidingssystemen

 Date

1995-11

 Abstract

The Eurofix navigation system is intended to overcome the problems of the GPS satellite navigation system by broadcasting corrections for this system using existing LORAN-C transmitters. By modulating the pulses transmitted by the LORAN-C stations, a low speed digital communication channel becomes available. This datalink must fulfill a number of requirements within the limitations of a low data rate.
In this report, the use of ternary modulation in the datalink is discussed. With this type of modulation, the data rate can be improved so that the capability to satisfy the requirements increases. An example of a complete ternary modulation scheme that fulfills all requirements is also given. The performance of this scheme is compared to that of a binary modulation scheme in a simulated LORAN-C environment.
It is found that the use of ternary modulation is feasible when the Signal-to-Noise Ratio of the LORAN-C signal is sufficiently high. The proposed ternary modulation scheme satisfies more of the requirements with a higher net data speed when compared to binary modulation.

 Subject

Eurofix
LORAN-C data channel
Ternary signaling
Error control coding

 To reference this document use:

http://resolver.tudelft.nl/uuid:e3816042-1fd5-4f54-bfbe-d891a16201f4

 Part of collection

Student theses

 Document type

master thesis

 Rights

(c) 1995 P..A. de Koning
Files
PDF AA278880_8.pdf 29.16 MB
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