M-PATH FILTER WITH OUTER AND INNER CHANNELIZERS FOR PASSBAND BANDWIDTH ADJUSTMENT

摘要

Disclosed is apparatus and method to filter a signal. In such an apparatus, an outer polyphase filter is configured for receiving an input signal and for channelizing the input signal into outer filtered samples. An outer Inverse Fourier Transform block is coupled to the outer polyphase filter and configured for transforming the outer filtered samples into a coarse multi-path output. An inner polyphase filter is coupled to a path of the coarse multi-path output for receiving information therefrom and configured for generating inner filtered samples of the information obtained from the path. The inner filtered samples are for moving an edge of a passband associated with the outer filtered samples toward a center of the passband.

主权项

1. An apparatus for signal filtering, comprising:
an outer polyphase filter configured for receiving an input signal and for channelizing the input signal into outer filtered samples; an outer Inverse Fourier Transform block coupled to the outer polyphase filter and configured for transforming the outer filtered samples into a coarse multi-path output; an inner polyphase filter coupled to a path of the coarse multi-path output for receiving information therefrom and configured for generating inner filtered samples of the information obtained from the path; and wherein the inner filtered samples are for moving an edge of a passband associated with the outer filtered samples toward a center of the passband.