Low-complexity blind beamforming based on cyclostationarity

A blind adaptive beamformer with real-valued weights for cyclostationary signals is proposed by introducing a preprocessing stage. It is proved that the optimum weight vector of the proposed method is real-valued. Thus we can discard the imaginary part of the weight vector during the update process, which reduces the computational complexity of the algorithm. Moreover, since the optimum solution is real-valued, a result closer to the optimum one is reached, leading to a much increased convergence rate.

[1]  W. Gardner.  Exploitation of spectral redundancy in cyclostationary signals , 1991, IEEE Signal Processing Magazine.

[2]  J. Cardoso,et al.  Blind beamforming for non-gaussian signals , 1993 .

[3]  Kon Max Wong,et al.  Blind adaptive beamforming for cyclostationary signals , 1996, IEEE Trans. Signal Process..

[4]  M. Viberg,et al.  Two decades of array signal processing research: the parametric approach , 1996, IEEE Signal Process. Mag..

[5]  A. V. D. Veen.  Algebraic methods for deterministic blind beamforming , 1998, Proc. IEEE.

[6]  Xiaofeng Zhang,et al.  Concepts and Techniques , 2019, Cognition and Intractability.

[7]  Antonio Napolitano,et al.  Cyclostationarity: Half a century of research , 2006, Signal Process..

[8]  Wei Liu,et al.  Semi-blind source separation for convolutive mixtures based on frequency invariant transformation , 2005, Proceedings. (ICASSP '05). IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005..

[9]  Chia-Cheng Huang,et al.  Blind Adaptive Beamforming for Cyclostationary Signals: A Subspace Projection Approach , 2009, IEEE Antennas and Wireless Propagation Letters.

[10]  Harry L. Van Trees,et al.  Optimum Array Processing , 2002 .

[11]  Wei Liu,et al.  Robust forward backward based beamformer for a general-rank signal model with real-valued implementation , 2012, Signal Process..

[12]  M.N.S. Swamy,et al.  A Class of Adaptive Cyclostationary Beamforming Algorithms , 2008 .

[13]  R. Langley,et al.  Adaptive Beamforming with Real-Valued Coefficients Based on Uniform Linear Arrays , 2011, IEEE Transactions on Antennas and Propagation.

[14]  Wei Liu,et al.  A class of constant modulus algorithms for uniform linear arrays with a conjugate symmetric constraint , 2010, Signal Process..

[15]  Wei Liu,et al.  Wideband beamforming for multipath signals based on frequency invariant transformation , 2012, Int. J. Autom. Comput..

[16]  Wei Liu,et al.  A Class of Constrained Adaptive Beamforming Algorithms Based on Uniform Linear Arrays , 2010, IEEE Transactions on Signal Processing.

[17]  Peng Wang,et al.  Sidelobe Suppression for Blind Adaptive Beamforming with Sparse Constraint , 2011, IEEE Communications Letters.

[18]  William A. Gardner,et al.  Spectral self-coherence restoral: a new approach to blind adaptive signal extraction using antenna arrays , 1990, Proc. IEEE.

[19]  Tho Le-Ngoc,et al.  Recursive least squares constant modulus algorithm for blind adaptive array , 2004, IEEE Transactions on Signal Processing.

[20]  Jacob Sheinvald.  On blind beamforming for multiple non-Gaussian signals and the constant-modulus algorithm , 1998, IEEE Trans. Signal Process..