Symbol decoder, threshold estimation and correlation systems and methods
AssigneeInfineon Technologies AG
InventorDavid Levy
Life of this patent
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Abstract
A threshold estimate system includes a level quantizer, a correlation mechanism, and a threshold adaptation component. The level quantizer is configured to receive an input signal and to generate a quantization signal from the input signal according to one or more threshold levels. The correlation mechanism is configured to correlate the quantization signal with reference symbols to generate an output signal. The threshold adaptation component is configured to modify the one or more threshold levels according to the output signal and the input signal.
Claims21
A threshold estimation system comprising:
- a level quantizer configured to receive an input signal and generate a quantization signal according to one or more threshold levels;
- a correlation mechanism configured to correlate the quantization signal with reference symbols to generate an output signal;
- and
- a threshold adaptation component configured to modify the one or more threshold levels according to the output signal and the input signal.
A method for updated threshold levels used for quantization, the method comprising:
- obtaining current threshold values for a symbol;
- generating an average measured current for the symbol;
- generating an expected average current for the symbol according to the current threshold values;
- and
- obtaining an error estimate according to the average measured current and the expected average current.
A method of recognizing symbols in a quantization signal, the method comprising:
- obtaining a set of samples beginning with a last sample;
- generating a correlation score for the set of samples;
- and
- comparing the correlation score with at least one previous correlation score to identify a peak correlation score.
Dependencies are inferred from the claim text.