Method and system for unconstrained frequency domain adaptive filtering

摘要

Aspects of a method and system for unconstrained frequency domain adaptive filtering include one or more circuits that are operable to select one or more time domain coefficients in a current filter partition. A value may be computed for each of the selected one or more time domain coefficients based on a corresponding plurality of frequency domain coefficients. The corresponding plurality of frequency domain coefficients may be adjusted based on the computed values. A subsequent plurality of frequency domain coefficients in a subsequent filter partition may be adjusted based on the computed values. Input signals may be processed in the current filter partition based on the adjusted corresponding plurality of frequency domain coefficients. A time-adjusted version of the input signals may be processed in a subsequent filter partition based on the adjusted subsequent plurality of frequency domain coefficients.

主权项

1. A communication device, comprising:
a receiver configured to receive a radio frequency (RF) signal; and an adaptive filter configured to filter a portion of the RF signal based upon a plurality of frequency domain coefficients, where at least a portion of the plurality of frequency domain coefficients is adjusted based upon a computed value for a time domain coefficient in a filter partition based upon the plurality of frequency domain coefficients, where the time domain coefficient in the filter partition overlaps with a corresponding time domain coefficient in a time delayed filter partition, and where computing the computed value comprises adding a value for a first frequency domain coefficient of the plurality of frequency domain coefficients and a value for each even-numbered frequency domain coefficient of the plurality of frequency domain coefficients.