×

System and method for real-time spectrum analysis in a communication device

  • US 7,224,752 B2
  • Filed: 01/14/2004
  • Issued: 05/29/2007
  • Est. Priority Date: 04/22/2002
  • Status: Active Grant
First Claim
Patent Images

1. A spectrum analysis system comprising:

  • a. a Fast Fourier Transform (FFT) circuit that receives as input a digital signal representing received energy for a FFT interval in a frequency band and computes FFT values for a plurality of frequency bins; and

    b. a power calculation circuit coupled to the FFT circuit that computes the power at each frequency bin for an FFT interval and outputs a power value for each frequency bin; and

    c. a duty count circuit coupled to the power calculation circuit that, for an FFT interval, compares the power value for each frequency bin with a threshold and increments a count value when the power value is at or exceeds the threshold for each frequency bin.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×