Patent ID: 11879916
Assignee: INDIAN INSTITUTE OF TECHNOLOGY MADRAS (IIT MADRAS)
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 10:
11. An electronic device (100) for estimating frequencies of multiple sinusoids, comprising:
a memory (110);
a processor (120); and
a frequency estimator engine (140), operably connected to the memory (110) and the processor (120), configured to:
receive a signal, wherein the signal comprises the multiple sinusoids;
estimate an initial frequency of each of the multiple sinusoids present in the received signal;
determine that a first candidate parameter is less than zero, wherein the first candidate parameter is a function of an estimated Signal-to-noise ratio (SNR) and an estimated threshold;
perform zero-padding on the received signal;
re-estimate frequencies obtained from the zero-padded version of the received signal;
validate the re-estimated frequencies obtained from the zero-padded version of the received signal based on validation criteria; and
predict the re-estimated frequencies or the initial frequencies as optimal frequencies based on the validation.