Multi-rate crest factor reduction

An electronic device comprising:

• a non-transitory memory storage comprising instructions;
• and
• one or more hardware processors in communication with the non-transitory memory storage, the one or more hardware processors configured to execute the instructions to cause the electronic device to:
• receive a plurality of first samples of a first input signal, the plurality of first samples generated at a first sampling rate;
• perform a first peak detection based on the plurality of first samples to generate a plurality of first peak detection output samples;
• downsample the plurality of first peak detection output samples to generate a plurality of first windowing input samples at a second sampling rate;
• generate a plurality of first windowing output samples based on the plurality of first windowing input samples;
• upsample the plurality of first windowing output samples to generate a plurality of first peak reduction samples at the first sampling rate;
• and
• generate a first output signal based on the plurality of first samples and the plurality of first peak reduction samples.

A non-transitory computer-readable medium storing computer instructions for reducing crest factor, that when executed by one or more hardware processors of an electronic device, cause the electronic device to perform operations comprising:

• receiving a plurality of first samples of a first input signal, the plurality of first samples generated at a first sampling rate;
• performing a first peak detection based on the plurality of first samples to generate a plurality of first peak detection output samples;
• downsampling the plurality of first peak detection output samples to generate a plurality of first windowing input samples at a second sampling rate;
• generating a plurality of first windowing output samples based on the plurality of first windowing input samples;
• upsampling the plurality of first windowing output samples to generate a plurality of first peak reduction samples at the first sampling rate;
• and
• generating a first output signal based on the plurality of first samples and the plurality of first peak reduction samples.