2002 · 67 citations · 10 references
EngineeringComputer EngineeringElectrical EngineeringAnalog ElectronicsDigital CommunicationMicroelectronicsAnalog Integrated CircuitsCommunication SystemsDigital Integrated CircuitsDigital Signal ProcessingDistortion AnalysisNoise In Analog CircuitsAnalog-digital ConversionAnalog-to-digital ConversionAnalog-to-digital ConvertersClipping DistortionD-a ConversionQuantization NoiseSignal-to-noise RatioSignal-to-noise Ratio Analysis
At present, discrete multi-tone (DMT) transceivers receive much attention for the implementation of asymmetric digital subscriber lines (ADSL). This paper analyzes the effect of clipping a DMT-signal, i.e. limiting the signal's maximum amplitude. An exact expression is given for the signal-to-noise ratio (SNR) degradation due to clipping alone. By combining this expression with the well-known expression for the quantization noise in the A/D-D/A converters, it is shown how clipping can reduce the number of bits of A/D-D/A converters as well as the dynamical range of the line drivers while keeping the overall SNR the same as without clipping.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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