US 11,817,977 B2
Method of determining single sampling frequency of classification target signal in order to predict modulation type of classification target signal, and method and apparatus for predicting modulation type by using classification target signal sampled with single sampling frequency
Byung Chan Kim, Daejeon (KR); Kang Hee Kim, Daejeon (KR); Haeng Sook Ro, Daejeon (KR); Gwang Moon Park, Daejeon (KR); Soo Ho Sohn, Daejeon (KR); and Ki Cheol Tae, Daejeon (KR)
Assigned to Electronics and Telecommunications Research Institute, Daejeon (KR)
Filed by ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR)
Filed on Mar. 31, 2022, as Appl. No. 17/710,625.
Claims priority of application No. 10-2021-0108799 (KR), filed on Aug. 18, 2021.
Prior Publication US 2023/0066195 A1, Mar. 2, 2023
Int. Cl. H04B 3/46 (2015.01); H04L 27/00 (2006.01)
CPC H04L 27/0012 (2013.01) [H04L 27/0006 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method of classifying a modulation type of a classification target signal by using a single sampling frequency in a receiving apparatus, the method comprising:
extracting I data having an in-phase component and Q data having a quadrature-phase component, sampled with a single sampling frequency, from the classification target signal received from a transmitting apparatus by using a preprocessor; and
analyzing features of the extracted I data and Q data to classify a modulation type of the classification target signal by using a classifier learned based on a machine learning method.