Performance evaluation of a 512-QAM system in distorted channels

1 January 1986

journal article
Published by Institution of Engineering and Technology (IET) in IEE Proceedings F Communications, Radar and Signal Processing

Vol. 133 (2) , 199-204
https://doi.org/10.1049/ip-f-1.1986.0031

Abstract

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.

Keywords

GROUP DELAY CHANNEL DISTORTIONS
512-QAM SYSTEM
PARABOLIC DISTORTION
COMPUTER SIMULATION
SINUSOIDAL AMPLITUDE DISTORTION
DISTORTED CHANNELS
LINEAR DISTORTION
SYMBOL RATE
256-QAM SYSTEM
LINEAR CHANNEL DISTORTIONS

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