US 11,879,916 B2
Method and electronic device for estimating frequencies of multiple sinusoids which trades bias with variance
Vishnu Palakkal, Malappuram (IN); and Coimbatore Subramanian Ramalingam, Chennai (IN)
Assigned to INDIAN INSTITUTE OF TECHNOLOGY MADRAS (IIT MADRAS), Chennai (IN)
Appl. No. 17/906,411
Filed by Indian Institute of Technology Madras (IIT Madras), Chennai (IN)
PCT Filed Mar. 18, 2021, PCT No. PCT/IN2021/050279
§ 371(c)(1), (2) Date Sep. 15, 2022,
PCT Pub. No. WO2021/199066, PCT Pub. Date Oct. 7, 2021.
Prior Publication US 2023/0176099 A1, Jun. 8, 2023
Int. Cl. G01R 23/16 (2006.01); G01R 23/02 (2006.01); G06F 17/18 (2006.01)
CPC G01R 23/16 (2013.01) [G01R 23/02 (2013.01); G06F 17/18 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for estimating frequencies of multiple sinusoids, comprising:
receiving, by an electronic device (100), a signal, wherein the signal comprises the multiple sinusoids;
estimating, by the electronic device (100), an initial frequency of each of the multiple sinusoids present in the received signal;
determining, by the electronic device (100), 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;
performing, by the electronic device (100), zero-padding on the received signal;
re-estimating, by the electronic device (100), frequencies obtained from zero-padded version of the received signal;
validating, by the electronic device (100), the re-estimated frequencies obtained from zero-padded version of the received signal based on validation criteria; and
predicting, by the electronic device (100), the re-estimated frequencies or the initial frequencies as optimal frequencies based on the validation.