Patent ID: 8831155

Claim:
A receiver for a wireless device, the receiver comprising: an analog front end (AFE); an analog to digital converter (ADC) configured to receive an output of the AFE; an ADC correction block configured to receive an output of the ADC, and in response, provide a corrected ADC signal; an ADC saturation determination block configured to identify an ADC saturation event based on the corrected ADC signal; a short fast Fourier transform (FFT) block configured to perform a short fast Fourier transform based on the corrected ADC signal, wherein the short fast Fourier transform has a lower resolution than a fast Fourier transform used by the wireless device to demodulate a received packet; a DC-filter configured to receive an input based on the corrected ADC signal; an ADC power determination block configured to receive an output of the DC-filter; and an automatic gain control (AGC) block configured to detect and identify radar based on outputs of the ADC saturation determination block, the short FFT block, and the ADC power determination block.