© The Institution of Engineering and Technology
This paper presents a subband beamformer with the generalised sidelobe canceller (GSC) as the underlying structure. This new beamformer, referred to as the subcanceller, determines the statistically optimum filter bank succeeding the blocking matrix of the GSC based on the minimum mean-square error criterion. As a consequence, the signals passing through the lower branch of the GSC are decomposed into more appropriate subband components by such filter banks according to the input data statistics to enhance the interference suppression capability. The determination of the filter bank coefficients, however, calls for computationally demanding nonlinear optimisation. To alleviate the computational overhead, an iterative procedure is also proposed, which solves the Rayleigh quotient in each iteration. Furthermore, a detailed performance analysis of the proposed beamformer is conducted, which includes the development expression of the output signal to interference-plus-noise ratio and its implications, and the analysis of the convergence characteristic. Furnished simulations show that the new scheme yields superior interference suppression performance with a faster convergence rate compared with previous studies.
References
-
-
1)
-
B. Widrow ,
P.E. Mantey ,
L.J. Griffiths ,
B.B. Goode
.
Adaptive antenna systems.
Proc. IEEE
,
2143 -
2159
-
2)
-
Y. Higa ,
H. Ohi ,
S. Kinjo
.
A subband adaptive filter with the statistically optimum analysis filter bank.
IEEE Trans. Circ. Syst. II
,
1 ,
1150 -
1154
-
3)
-
S. Zhang ,
I.L.-J. Thng
.
Robust presteering derivative constraints for broadband antenna arrays.
IEEE Trans. Signal Process.
,
1 ,
1 -
10
-
4)
-
Y. Zhang ,
K. Yang ,
M.G. Amin ,
Y. Karasawa
.
Performance analysis of subband arrays.
IEICE Trans. Commun.
,
9 ,
2507 -
2515
-
5)
-
W.H. Neo ,
B. Farhang-Boroujeny
.
Robust microphone arrays using subband adaptive filters.
IEE Proc., Vis. Image Signal Process.
,
1 ,
17 -
25
-
6)
-
X.N. Tran ,
T. Taniguchi ,
Y. Karasawa
.
Performance analysis of subband adaptive array in multipath fading environment.
IEICE Trans. Fund.
,
8 ,
1798 -
1806
-
7)
-
Y. Chu ,
W.-H. Fang
.
Performance analysis of a wavelet-based generalized sidelobe canceller.
IEEE Trans. Antennas Propag.
,
3 ,
519 -
534
-
8)
-
H.L. Van Trees
.
(2002)
Optimum array processing.
-
9)
-
O.L. Frost
.
An algorithm for linearly constrained adaptive array processing.
Proc. IEEE
,
926 -
935
-
10)
-
B. Farhang-Boroujeny ,
S. Gazor
.
Selection of orthonormal transforms for improving the performance of the transform domain normalised LMS algorithm.
IEE Proc., F. Radar Signal Process.
,
5 ,
327 -
335
-
11)
-
R. Horn ,
C. Johnson
.
(1985)
Matrix analysis.
-
12)
-
P.S.R. Diniz
.
(2002)
Adaptive filtering: algorithms and practical implementation.
-
13)
-
Y. Chu ,
W.-H. Fang
.
A novel wavelet-based generalized sidelobe canceller.
IEEE Trans. Antennas Propag.
,
9 ,
1485 -
1494
-
14)
-
Y. Zhang ,
K. Yang ,
M.G. Amin
.
Adaptive array processing for multipath fading mitigation via exploitation of filter banks.
IEEE Trans. Antennas Propag.
,
4 ,
505 -
516
-
15)
-
J. Capon
.
High resolution frequency-wavenumber spectrum analysis.
Proc. IEEE
,
1408 -
1418
-
16)
-
L.J. Griffiths ,
C.W. Jim
.
An alternative approach to linear constrained adaptive beamforming.
IEEE Trans. Antennas Propag.
,
1 ,
27 -
34
-
17)
-
K. Steiglitz ,
L.-E. McBride
.
A technique for the identification of linear systems.
IEEE Trans. Autom. Control
,
10 ,
461 -
464
-
18)
-
Q. Zou ,
Z.L. Yu ,
Z. Lin
.
A robust algorithm for linearly constrained adaptive beamforming.
IEEE Signal Process. Lett.
,
1 ,
26 -
29
-
19)
-
W.-S. Yang ,
W.-H. Fang ,
C.-Y. Lin
.
Adaptive beamforming with optimum subband decomposition.
Proc. IEEE AP-S International Symposium on Antennas
,
287 -
290
-
20)
-
J.M.D. Haan ,
N. Grbić ,
I. Claesson ,
S.E. Nordholm
.
Filter bank design for subband adaptive microphone arrays.
IEEE Trans. Speech Audio Process.
,
1 ,
14 -
23
-
21)
-
W. Liu ,
S. Weiss ,
L. Hanzo
.
Subband adaptive generalized sidelobe canceller for broadband beamforming.
Proc. IEEE Workshop on Statistical Signal Processing
,
591 -
594
-
22)
-
J.S. Goldstein
.
A wideband multichannel array sensor with a frequency domain adaptive filter structure.
Proc. IEEE Int'l Conf. Acoustics, Speech, and Signal Processing
,
520 -
523
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