Simulation and design of a simple burst demodulator for a random-access TDMA packet terminal
Abstract
The design methodology used in developing the STARCOM low-bit-rate burst modem is outlined. A phase-locked loop approach based on the principle of optimum detection and estimation theory was selected. The configuration is highly nonlinear, and there is no simple closed-form analytical description of these loops. However, the differential equations derived for the joint tracking loops provide the basis for a simulation program. This program provides the capability for generating a filtered data signal consisting of a preamble, synchronization unique word, and random data, as well as Gaussian random noise. The program also simulates the correlation of the unique word detector to determine the effect of nonlinear loop acquisition transients on unique word miss probability.
- Publication:
-
ICDSC-7; Proceedings of the Seventh International Conference on Digital Satellite Communications
- Pub Date:
- 1986
- Bibcode:
- 1986icds.proc..683W
- Keywords:
-
- Computerized Simulation;
- Control Systems Design;
- Demodulators;
- Earth Terminals;
- Phase Locked Systems;
- Time Division Multiple Access;
- Algorithms;
- Bit Error Rate;
- Phase Error;
- Random Noise;
- Satellite Communication;
- Communications and Radar