Zeng Hao, Pang Yu, Yang Li-sheng . Covariance Matrix Estimation in Beamspace DBF[J]. Journal of Electronics & Information Technology, 2008, 30(5): 1100-1103. doi: 10.3724/SP.J.1146.2007.00481
Citation:
Zeng Hao, Pang Yu, Yang Li-sheng . Covariance Matrix Estimation in Beamspace DBF[J]. Journal of Electronics & Information Technology, 2008, 30(5): 1100-1103. doi: 10.3724/SP.J.1146.2007.00481
Zeng Hao, Pang Yu, Yang Li-sheng . Covariance Matrix Estimation in Beamspace DBF[J]. Journal of Electronics & Information Technology, 2008, 30(5): 1100-1103. doi: 10.3724/SP.J.1146.2007.00481
Citation:
Zeng Hao, Pang Yu, Yang Li-sheng . Covariance Matrix Estimation in Beamspace DBF[J]. Journal of Electronics & Information Technology, 2008, 30(5): 1100-1103. doi: 10.3724/SP.J.1146.2007.00481
A modified forward-backward averaging algorithm to estimate the covariance matrix in beamspace DBF is proposed. The computation is greatly reduced because the complex number operation is replaced with real number operation with the special structure of symmetrical array. Simulation results show that the proposed algorithm can preserve its interference suppression ability with the reduced computation.
Godara L C. Applications of antenna arrays to mobilecommunications, part I: Performance improvement, feasibility,and system considerations[J].Proc. of the IEEE.1997, 85(7):1029-1030[2]Godara L C. Application of antenna arrays to mobilecommunications, part II: Beam-forming and direction-ofarrivalconsiderations[J].Proc. of the IEEE.1997, 85(8):1195-1245[3]Krim H and Viberg M. Two decades of array signalprocessing research[J].IEEE Signal Processing Magazine.1996,13(4):67-94[4]Linebarger D A, Degroat R D, and Dowling E M. Efficientdirection-finding methods employing forward/backwardaveraging[J].IEEE Trans. on Signal Processing.1994, 42(8):2136-2145[5]Amini A N and Georgiou T T. Avoiding ambiguity inbeamspace processing[J].IEEE Singal Processing Letters.2005,12(5):372-375[6]Hassanien A, Elkader S A, and Gershman A B. Convexoptimization based beam-space preprocessing with improvedrobustness against out-of-sector sources[J].IEEE Trans. onSignal Processing.2006, 54(5):1587-1595[7]Belloni F and Koivunen V. Beamspace transform for UCA:error analysis and bias reduction[J].IEEE Trans. on SignalProcessing.2006, 54(8):3078-3089[8]张贤达. 矩阵分析与应用. 北京: 清华大学出版社, 2004:133-136.[9]Van Trees L. Optimum Array Processing. New York: JhonWiley, 2002: 722-725.