Research on separability of GMSK mixed signals based on modulation parameters

Blind source separation receiving technology (BSSRT) has a good performance on GMSK mixed signals. In order to study the adaptability of it, we use Euclidean distance as a separability measurement of GMSK mixed signals and derive an analytic expression which reflects the degree of amplitude ratio and phase difference impacting on it. Then the mixed signals upper bound BER after separation was analysed. Simulation results show that amplitude is equal and phase difference is zero, the mixed signals inseparation otherwise separation.