S. Kim, B.- seok Kim, D. Oh, and J. Lee, “An Effective Pre-processing Technique for Robust ESPRIT-Based Single-Tone Frequency Estimation against an I/Q Mismatch”, ELEKTRON ELEKTROTECH, vol. 21, no. 6, pp. 34–39, Dec. 2015, doi: 10.5755/j01.eee.21.6.13757.