Title :
Simulation of error sources in digital channels
Author_Institution :
AT&T Bell Labs., Holmdel, NJ, USA
fDate :
1/1/1988 12:00:00 AM
Abstract :
A general approach to error-source simulation in digital channels is discussed. It is shown that the stochastic sequential machine (SSM) model is general enough to describe error-source statistics in digital communication channels. The SSM model is capable of describing both the correlation between errors in a channel (bursts of errors) and the correlation between errors in different channels (crosstalk). Physical causes of error burstiness in satellite channels are considered, and it is shown that the SSM model can account for differential encoding, scrambling, forward error correction, intersymbol interference, nonlinear signal distortion, adjacent channel interference, modem defects, etc. SSM models of the satellite channel with differential and convolutional codes are simulated. The results of simulation agree with the experimental data for the actual channels. Analytical methods for determining the performance characteristics of SSM-modeled systems are developed
Keywords :
digital communication systems; digital simulation; encoding; error correction codes; errors; intersymbol interference; satellite relay systems; telecommunication channels; adjacent channel interference; convolutional codes; crosstalk; differential code; digital communication channels; encoding; error bursts; error-source simulation; forward error correction; intersymbol interference; modem defects; nonlinear signal distortion; performance characteristics; satellite channels; scrambling; simulation; stochastic sequential machine model; Crosstalk; Digital communication; Error analysis; Error correction; Forward error correction; Interchannel interference; Intersymbol interference; Nonlinear distortion; Satellites; Stochastic processes;
Journal_Title :
Selected Areas in Communications, IEEE Journal on
