Adaptive cyclostationary array beamforming with robust capabilities

Abstract The existing techniques exploiting the signal cyclostationarity have been shown to be effective in performing antenna array beamforming without requiring the steering information. However, these techniques suffer from performance degradation due to both cycle frequency error (CFE) for the desired signal and finite data sample (FDS) effects. To deal with the CFE, we present an iterative averaging (IA) scheme to estimate the actual cyclic correlation matrix. With regard to the effect of cycle leakage due to finite data samples, we develop a novel fully data-dependent diagonal loading (NFD-DL) scheme to estimate the actual data correlation matrix. Then, a novel method is developed based on the IA scheme in conjunction with the NFD-DL scheme to possess the robust capabilities against the CFE and the FDS effects simultaneously. The simulation results show that the proposed method outperforms the existing methods in dealing with antenna array beamforming for cyclostationary signals in the presence of both CFE and FDS effects.

[1]  R. T. Compton Adaptive Antennas: Concepts and Performance , 1988 .

[2]  Ju-Hong Lee,et al.  Adaptive array beamforming with robust capabilities under random sensor position errors , 2005 .

[3]  Ju-Hong Lee,et al.  Efficient robust adaptive beamforming for cyclostationary signals , 2000, IEEE Trans. Signal Process..

[4]  Ju-Hong Lee,et al.  ROBUST ADAPTIVE BEAMFORMING USING A FULLY DATA-DEPENDENT LOADING TECHNIQUE , 2012 .

[5]  Chaohuan Hou,et al.  An adaptive beamforming method based on properties of cyclostationary signals , 2010, IEEE 10th INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING PROCEEDINGS.

[6]  Ju-Hong Lee,et al.  Robust adaptive array beamforming for cyclostationary signals under cycle frequency error , 1999 .

[7]  Jie Zhang,et al.  Robust direction finding for cyclostationary signals with cycle frequency error , 2005, Signal Process..

[8]  Ju-Hong Lee,et al.  Robust adaptive array beamforming under steering angle mismatch , 2006, Signal Process..

[9]  David W. Lewis,et al.  Matrix theory , 1991 .

[10]  Wei Zhang,et al.  Low-complexity blind beamforming based on cyclostationarity , 2012, 2012 Proceedings of the 20th European Signal Processing Conference (EUSIPCO).

[11]  Ju-Hong Lee,et al.  Adaptive array beamforming with robust capabilities under random phase perturbations , 2005, IEEE Trans. Signal Process..

[12]  William Gardner,et al.  Spectral Correlation of Modulated Signals: Part I - Analog Modulation , 1987, IEEE Transactions on Communications.

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

[14]  Yung-Fang Chen,et al.  Blind Beamforming Schemes in SC-FDMA Systems With Insufficient Cyclic Prefix and Carrier Frequency Offset , 2009, IEEE Transactions on Vehicular Technology.

[15]  Jian Li,et al.  On robust Capon beamforming and diagonal loading , 2003, IEEE Trans. Signal Process..

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

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

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

[19]  Jun Yang,et al.  Blind adaptive beamforming algorithm based on cyclostationary signals , 2010, 2010 International Conference on Image Analysis and Signal Processing.

[20]  Ju-Hong Lee,et al.  Robust cyclic adaptive beamforming using a compensation method , 2012, Signal Process..

[21]  David S. Watkins,et al.  Fundamentals of matrix computations , 1991 .

[22]  William A. Gardner,et al.  Spectral Correlation of Modulated Signals: Part II - Digital Modulation , 1987, IEEE Transactions on Communications.

[23]  Asoke K. Nandi,et al.  Extraction of a cyclostationary source using a new cost function without pre-whitening , 2011, Signal Process..

[24]  Jie Li,et al.  Adaptive beamforming based on covariance matrix reconstruction by exploiting interferences' cyclostationarity , 2013, Signal Process..

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