90 Mbit/s Digital Performance of Canada´s 14/12 GHz ANIK C Earth Stations

The design and performance aspects of Canada´s first commercial 14/12 GHz ANIK C earth stations are reviewed, with particular reference to the satellite link degradations of the 90 Mbit/s digital message service. Following design considerations based on computer simulations, extensive test data are presented with respect to BER, jitter, and other performance characteristics of the loop closed via. an ANIK C satellite simulator (SS). An analysis of the effects of linear and nonlinear distortions is applied to the formulation of a model that provides insight into the practical quantitative assessment of field tolerance and maintenance limits and of tradeoffs for new digital transmission systems.