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US 2026/0205340 A1Published application
Wideband combined resampling channelizer
AssigneeNational Research Council of Canada
InventorsThushara Kanchana Gunaratne, Brent Carlson
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Abstract
A wideband resampling channelizer is provided, comprising a plurality of signal processing modules for generating a plurality of output channels that are adjusted for phase and frequency and tagged with an output time stamp in relation to the input data samples, and a control module for controlling the plurality of signal processing modules based on a plurality of configuration parameters such that channelization and resampling operations are combined.
Claims20
A wideband resampling channelizer, comprising
- a control module for receiving delay and phase correction functions and an input time stamp, and in response outputting a plurality of control signals and and output time stamp based on a plurality of configuration parameters;
- a multiplexer for receiving input data samples and outputting time de-multiplexed input samples based on a multiplexer control signal output from the control module;
- a data buffer for receiving the time de-multiplexed input samples and outputting a contiguous flow of the data samples based on a buffer-control signal output from the control module;
- a coefficient-buffer for storing a plurality of fractional filters and outputting selected fractional filters for the contiguous flow of the data samples, based on a fractional delay filter index output from the control module;
- a multiply and accumulate module for multiplying the samples output from the data buffer by respective coefficients of the fractional filters output from the coefficient buffer for a required delay correction, and accumulating the multiplication product into a frame of samples;
- an inverse fast Fourier transform module for performing an inverse fast Fourier transform on the frame of samples,
- sine-cosine look up table for storing a plurality of multiplication factors;
- and
- an array of complex multipliers for multiplying the frame of samples output from inverse fast Fourier transform module by corresponding multiplication factors from the sine-cosine look up table based on phase compensation indices output from the control module and in response outputting a plurality of output channels that are adjusted for phase and frequency and tagged with the output time stamp for relation to the input data samples.
6 more elements
A wideband resampling channelizer, comprising
- a plurality of signal processing modules for generating a plurality of output channels that are adjusted for phase and frequency and tagged with an output time stamp in relation to the input data samples;
- and
- a control module for controlling the plurality of signal processing modules based on a plurality of configuration parameters such that channelization and resampling operations are combined.
Dependencies are inferred from the claim text.