Adaptive array beamforming for cyclostationary signals

被引:7
作者
Yu, SJ
Lee, JH
机构
[1] Department of Hlectrical Engineering, National Taiwan University
关键词
D O I
10.1109/8.504300
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This paper concerns the adaptive array beamforming using signal cyclostationarity. We present recursive algorithms for implementing the self-cohesive restoral (SCORE) approaches which were originally developed in [3] to perform blind adaptive signal extraction using antenna arrays. Utilizing the theory of matrix factorization in conjunction with a power normalization scheme, we first reformulate the original problems considered by the SCORE approaches as simpler constrained optimization problems, By employing the modular Gram-Schmidt orthogonalization (GSO) structure, adaptive algorithms are then developed for finding the optimal weight vector. It is shown that although the GSO structure used requires a computation load of O(N-2) for an adaptive beamformer with N elements, the computing time required for producing an output data vector is reduced to O(N) due to the pipeline implementation suitable for the GSO process. The convergence property for each of the proposed algorithms is considered. A simple and efficient method is proposed for choosing appropriate initial guesses to initiate the adaptive algorithms. Simulation examples are given to show the effectiveness of the proposed algorithms.
引用
收藏
页码:943 / 953
页数:11
相关论文
共 13 条
[1]   SPECTRAL SELF-COHERENCE RESTORAL - A NEW APPROACH TO BLIND ADAPTIVE SIGNAL EXTRACTION USING ANTENNA-ARRAYS [J].
AGEE, BG ;
SCHELL, SV ;
GARDNER, WA .
PROCEEDINGS OF THE IEEE, 1990, 78 (04) :753-767
[2]   BLIND BEAMFORMING FOR NON-GAUSSIAN SIGNALS [J].
CARDOSO, JF ;
SOULOUMIAC, A .
IEE PROCEEDINGS-F RADAR AND SIGNAL PROCESSING, 1993, 140 (06) :362-370
[3]  
CASTEDO L, 1993, P INT C AC SPEECH SI, P284
[4]  
Compton Jr R.T., 1989, ADAPTIVE ANTENNAS CO
[5]   CUMULANT-BASED BLIND OPTIMUM BEAMFORMING [J].
DOGAN, MC ;
MENDEL, JM .
IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS, 1994, 30 (03) :722-741
[6]  
Gardner W. A., 1988, Statistical Spectral Analysis
[7]   SPECTRAL CORRELATION OF MODULATED SIGNALS .2. DIGITAL MODULATION [J].
GARDNER, WA ;
BROWN, WA ;
CHEN, CK .
IEEE TRANSACTIONS ON COMMUNICATIONS, 1987, 35 (06) :595-601
[8]   SPECTRAL CORRELATION OF MODULATED SIGNALS - .1. ANALOG MODULATION [J].
GARDNER, WA .
IEEE TRANSACTIONS ON COMMUNICATIONS, 1987, 35 (06) :584-594
[9]  
Golub GH, 2013, Matrix Computations, V4
[10]  
HO R, 1994, P 2 WORKSH CYCL SIGN