Constraining FIR filter taps in an adaptive architecture

摘要

According to one embodiment, a system for processing data includes a processor and logic integrated with and/or executable by the processor, the logic being configured to individually set, for each of one or more range-constrained finite impulse response (FIR) filter taps configured for use in a FIR filter, a predetermined range of values suitable for controlling an equalizer response, and pass data through the equalizer including the FIR filter to obtain equalized data, wherein each of the one or more range-constrained FIR filter taps are individually adaptive within its predetermined range of values. Other systems and methods for processing data by constraining FIR filter taps while reading data from a data storage medium are described in more embodiments.

主权项

1. A system for processing data, the system comprising a processor and logic integrated with and/or executable by the processor, the logic being configured to:
individually set, for each of one or more range-constrained finite impulse response (FIR) filter taps configured for use in a FIR filter, a predetermined range of values suitable for controlling an equalizer response; individually determine, for each of one or more fixed FIR filter taps configured for use in the FIR filter, a static value which does not change, wherein the static value is determined to optimally control the equalizer response based on results obtained from an initial equalizer; set each of the one or more fixed FIR filter taps configured for use in the FIR filter to its static value; and pass data through the equalizer comprising the FIR filter to obtain equalized data, wherein each of the one or more range-constrained FIR filter taps are individually adaptive within its predetermined range of values.