Improved algorithm for DOA estimation of narrowband cyclostationary signals
Pla Information · Computer Engineering and Applications Journal · 2011
The cyclostationarity is amplified on propagator algorithm,and the cyclic propagator algorithm is presented.In virtue of the differences between the cyclic frenquency of desired signal and interference and the property that the noise is not spectral correlation on the cyclic frenquency of desired signal,the proposed algorithm can eliminate the effect of the noise and interference effective,and resolve the high resolution Direction-of-Arriva(lDOA) estimation problem even when the number of source signals is more than the number of array components.Compared with the conventional eigen subspace algorithms,the presented method has lower computational complexity with insignificant performance degradation because of avoid- ing EVD(Eigen Value Decomposition) of the covariance matrix of the received signals.Simulations illustrate the efficiency of the algorithm.