Systems and methods for channel quality determination
AssigneeLSI Corporation
InventorShaohua Yang
Life of this patent
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Abstract
Various embodiments of the present invention provide systems and methods for data processing. For example, a data processing system is disclosed that includes: a data detector circuit, a filter circuit, and a mean squared calculation circuit. The data detector circuit is operable to apply a data detection algorithm to a data set to yield a detected output. The filter circuit is operable to filter the detected output to yield a filtered output. The mean squared calculation circuit is operable to calculate a mean squared error value based at least in part on the data set and the filtered output. A quality indicator is generated at least in part on the mean squared error value.
Claims20
A data processing system, the data processing system comprising:
- a data detector circuit operable to apply a data detection algorithm to a data set to yield a detected output;
- a filter circuit operable to filter the detected output to yield a filtered output;
- and
- a mean squared calculation circuit operable to calculate a mean squared error value based at least in part on the data set and the filtered output, wherein a quality indicator is generated at least in part on the mean squared error value, and wherein the mean squared calculation circuit includes a noise predictive filter circuit.
A method for data processing, the method comprising:
- performing a data detection algorithm using a data detector circuit on a data set to yield a detected output;
- filtering the detected output to yield a filtered output;
- calculating a mean squared error value based at least in part on the data set and the filtered output;
- and
- generating a quality indicator based at least in part on the mean squared error value, wherein generating the quality indicator includes applying a noise predictive filtering to an interim value.
A storage device, the storage device comprising:
- a storage medium;
- a head assembly disposed in relation to the storage medium and operable to provide a sensed signal corresponding to information on the storage medium;
- a read channel circuit including:
- an analog to digital converter circuit operable to sample an analog signal derived from the sensed signal to yield a series of digital samples;
- an equalizer circuit operable to equalize the digital samples to yield a data set;
- a data detector circuit operable to apply a data detection algorithm to a data set to yield a detected output;
- a target filter circuit operable to filter the detected output to yield a filtered output based at least in part on a target input;
- and
- a mean squared calculation circuit operable to calculate a mean squared error value based at least in part on the data set and the filtered output, wherein a quality indicator is generated at least in part on the mean squared error value, and wherein the mean squared calculation circuit includes a noise predictive filter circuit.
Dependencies are inferred from the claim text.