High frequency radio signal classifications
AssigneeHewlett Packard Enterprise Development LP
InventorsChristina Vlachou, Kyu-Han Kim
Life of this patent
Estimating the term…
Abstract
Examples include classifying high frequency radio signals. Some examples include receiving a fast Fourier transform (FFT) of a high frequency radio signal, determining a first signal strength at a first guard frequency bin, determining a second signal strength at a second guard frequency bin, and determining a third signal strength at a direct current carrier frequency bin. Examples also include classifying the high frequency radio signal based on the first signal strength, the second signal strength, and the third signal strength.
Claims20
A non-transitory machine-readable storage medium comprising instructions, that, when executed, cause a processing resource to:
- receive a fast Fourier transform (FFT) of a high frequency radio signal, wherein the FFT comprises a direct current (DC) carrier frequency bin, a first guard frequency bin lower than the DC carrier frequency bin, and a second guard frequency bin higher than the DC carrier frequency bin;
- determine a first signal strength at the first guard frequency bin;
- determine a second signal strength at the second guard frequency bin;
- determine a third signal strength at the DC carrier frequency bin;
- and
- classify the high frequency radio signal based on the first signal strength, the second signal strength, and the third signal strength.
A non-transitory machine-readable storage medium comprising instructions, that, when executed, cause a processing resource to:
- receive an FFT of a high frequency radio signal;
- determine a maximum strength of the FFT;
- determine a number of peaks in the FFT that exceeds a first threshold;
- in response to a determination that the maximum strength exceeds the first threshold and a determination that the number exceeds a second threshold, determine a first signal strength at a first guard frequency bin and a second signal strength at a second guard frequency bin;
- in response to a determination that the first signal strength and the second signal strength meet a third threshold, determine a third signal strength at a direct current (DC) carrier frequency bin;
- and
- classify the high frequency radio signal based on the third signal strength.
A method comprising:
- receiving at a network device, a first FFT of a high frequency radio signal;
- determining, by the network device, a first maximum strength of the first FFT;
- determining, by the network device, a first number of peaks in the first FFT that exceeds a first threshold;
- receiving, at the network device, a second FFT of the high frequency radio signal;
- determining, by the network device, a second maximum strength of the second FFT;
- determining, by the network device, a second number of peaks in the second FFT that exceeds the first threshold;
- in response to a determination that the first maximum strength and the second maximum strength both exceed the first threshold and a determination that the first number and the second number both exceed a second threshold:
- determining, by the network device, an average FFT based on the first FFT and the second FFT;
- and
- classifying, by the network device, the high frequency radio signal based on a signal strength of the average FFT at a first guard frequency bin, a signal strength of the average FFT at a second guard frequency bin, and a signal strength of the average FFT at a direct current (DC) carrier frequency bin.
Dependencies are inferred from the claim text.