DOI: 10.3724/SP.J.1146.2013.00535

Journal of Electronics & Information Technology (电子与信息学报) 2013/35:12 PP.2868-2873

The Recognition and Parameter Estimation of Hybrid Modulation Signal Combined with FSK and BPSK

A recognition and parameter estimation algorithm for hybrid modulation signal combined with Frequency Shift Keying and Binary Phase Shift Keying (FSK/BPSK) is proposed. First, the models of the considered signals and their unwrapped phase are presented. Then, a recognition algorithm is presented for signals including FSK/BPSK hybrid modulation signal, BPSK signal and FSK signal based on instantaneous frequency by utilizing binary tree, and the thresholds of recognition based on Neyman-Pearson (N-P) criterion are discussed and analyzed in detail. Finally, the parameter estimation of FSK/BPSK signal is implemented. Simulation results indicate that the proposed algorithm possesses fine recognition performance and estimation accuracy in lower SNR levels.

Key words:Signal recognition,Parameter estimation,Frequency Shift Keying and Binary Phase Shift Keying (FSK/BPSK) hybrid modulation,Instantaneous frequency

ReleaseDate:2014-07-21 17:01:14