Signal processing arrangement and signal processing method
AssigneeContinental Automotive GmbH
InventorsLutz Braungardt, Martin Opitz, Thomas Reisinger
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Abstract
A signal processing arrangement is designed to process a digitalized phase-modulated and/or digitalized spreaded input signal (1) and has a complex channelizer (2) which despreads and/or demodulates the input signal (1) in the time range on the basis of a folding operation.
Claims18
A signal processing device for a radio locking system to process at least one of a digitized phase-modulated and digitized spread input signal including a complex channelizer configured to perform at least one of despreading and demodulating the input signal in the time domain using a convolution operation, the complex channelizer comprising:
- a sampler configured to receive the digitized input signal and sample the received digitized input signal during a defined time period;
- a first window function configured to weight the input signal samples using a first multiplier;
- a buffer storage downstream of the first window function and configured to buffer the weighted input signal samples;
- a multiplication function configured to receive the weighted input signal samples from the buffer storage and apply a second multiplier to shift the frequency of the input signal samples to baseband;
- and
- a low-pass filter downstream of the multiplier and configured to receive the baseband signals, distinguish the signals into different frequency subranges, and filter out one or more of the distinguished subranges;
- wherein the filter implements a convolution with a filter impulse response.
A signal processing method comprising:
- receiving an input signal including at least one of digitized phase-modulated and digitized spread signals,
- sampling the received digitized input signal during a defined time period;
- weighting the input signal samples using a first multiplier;
- buffering the weighted input signal samples in a buffer storage;
- receiving the weighted input signal samples form the buffer storage and applying a second multiplier to shift the frequency of the input signal to baseband;
- and
- filtering the baseband signals to distinguish the signals into different frequency subranges and filter out one or more of the distinguished subranges, using a convolution with a filter impulse response;
- thereby at least one of despreading and demodulating the input signal in the time domain.
Dependencies are inferred from the claim text.