Generalized Coherence Based Cyclic Frequency Estimation
Songsri Sirianunpiboon, Stephen D. Howard, Douglas Cochran · 2022
The use of generalized coherence to measure correlation among multiple subspaces has been studied as an approach for detection of cyclostationarity in a recent series of papers by the authors. The detectors obtained were demonstrated in simulations to offer superior performance to other established cyclostationarity detectors in application scenarios representing cognitive radio multi-channel passive surveillance. This paper describes an approach to cyclic frequency estimation based on similar generalized coherence ideas. The performance of such an estimator is demonstrated and compared against three prominent cyclic frequency estimators in multiple simulation experiments involving signals with different modulation types.