Real-time separation of signal components in spectrum analyzer
First Claim
Patent Images
1. A method comprising:
- applying filterbank windowing to an input signal to produce first samples in the time domain;
transforming the first samples in the time domain into first bins in the frequency domain such that the number of first bins is the same as the number of first samples;
selecting a sub-band of the input signal based on the first bins;
applying windowing to the sub-band to produce second samples in the time domain for the sub-band; and
transforming the second samples in the time domain into second bins in the frequency domain such that the number of second bins is the same as the number of second samples.
2 Assignments
0 Petitions
Accused Products
Abstract
Filterbank windowing and Fourier transformation are used to distinguish sub-bands of interest from other sub-bands of an input signal. The sub-bands of interest are selected and then subjected to additional windowing and Fourier transformation.
12 Citations
20 Claims
-
1. A method comprising:
-
applying filterbank windowing to an input signal to produce first samples in the time domain; transforming the first samples in the time domain into first bins in the frequency domain such that the number of first bins is the same as the number of first samples; selecting a sub-band of the input signal based on the first bins; applying windowing to the sub-band to produce second samples in the time domain for the sub-band; and transforming the second samples in the time domain into second bins in the frequency domain such that the number of second bins is the same as the number of second samples. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A system comprising:
-
a filterbank that applies filterbank windowing to an input signal to produce first samples in the time domain; and a digital signal processor that; transforms the first samples in the time domain into first bins in the frequency domain such that the number of first bins is the same as the number of first samples; selects a sub-band of the input signal based on the first bins; applying windowing to the sub-band to produce second samples in the time domain for the sub-band; and transforming the second samples in the time domain into second bins in the frequency domain such that the number of second bins is the same as the number of second samples. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
-
Specification