Performance evaluation of a 512-QAM system in distorted channels

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Performance evaluation of a 512-QAM system in distorted channels

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The effects of linear channel distortions on the performance of a 512-QAM system are studied. Performance degradation due to linear, parabolic sinusoidal amplitude and group delay channel distortions are calculated by means of computer simulation. It is shown that sinusoidal amplitude and linear group delay distortions degrade most significantly the system performance. Comparison of the results with that of a same symbol rate and as well as a same bit rate 256-QAM system are also given.

Inspec keywords: electric distortion; digital simulation; digital communication systems; amplitude modulation; telecommunication channels

Other keywords: linear channel distortions; sinusoidal amplitude distortion; computer simulation; 256-QAM system; group delay channel distortions; parabolic distortion; distorted channels; symbol rate; 512-QAM system; linear distortion

Subjects: Modulation and coding methods; Communications computing; Telecommunication applications; Information theory

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Erratum: Performance evaluation of a 512-QAM system in distorted channels