Real-valued propagator method for DOA estimation of noncircular signals
Guoce Huang · Systems engineering and electronics · 2010
Noncircular signals such as binary phase shift keying(BPSK) and amplitude modulation(AM) modulated signals are widely used in modern communication systems.To reduce the computational complexity of the extended propagator method(EPM) which is designed for noncircular signals,the unitary EPM(UEPM) is proposed.The UEPM uses the real and imaginary parts together(i.e.,weights the output matrix in the EPM with a complex matrix) to realize the EPM.The computational complexity of UEPM is a quarter of that of EPM.Simulation results show the similar performance between the UEPM and the EPM in array extension and accuracy.