Abstract
| Language | English |
|---|---|
| Pages | 337-344 |
| Number of pages | 8 |
| Journal | Journal of VLSI Signal Processing |
| Volume | 33 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Mar 2003 |
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Keywords
- broadband beamforming
- subband processing
- adaptive filters
- signal processing
- power systems
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A novel method for partially adaptive broadband beamforming. / Liu, W.; Weiss, Stephan; Hanzo, Lajos.
In: Journal of VLSI Signal Processing, Vol. 33, No. 3, 03.2003, p. 337-344.Research output: Contribution to journal › Article
TY - JOUR
T1 - A novel method for partially adaptive broadband beamforming
AU - Liu, W.
AU - Weiss, Stephan
AU - Hanzo, Lajos
PY - 2003/3
Y1 - 2003/3
N2 - In this paper, a novel subband-selective generalized sidelobe canceller (GSC) for partially adaptive broadband beamforming is proposed. The blocking matrix of the GSC is constructed such that its columns constitute a series of bandpass filters, which select signals with specific angles of arrival and frequencies. This results in bandlimited spectra of the blocking matrix outputs, which is further exploited by a subband decomposition prior to running independent unconstrained adaptive filters in each non-redundant subband. We discuss the design of both the blocking matrix using a genetic algorithm for an efficient sum-of-power-of-two coefficient format and the filter bank for the subsequent subband decomposition. By these steps, the computational complexity of our subband-selective GSC is greatly reduced compared to other adaptive GSC schemes, while performance is comparable or even enhanced due to subband decorrelation, as simulations indicate.
AB - In this paper, a novel subband-selective generalized sidelobe canceller (GSC) for partially adaptive broadband beamforming is proposed. The blocking matrix of the GSC is constructed such that its columns constitute a series of bandpass filters, which select signals with specific angles of arrival and frequencies. This results in bandlimited spectra of the blocking matrix outputs, which is further exploited by a subband decomposition prior to running independent unconstrained adaptive filters in each non-redundant subband. We discuss the design of both the blocking matrix using a genetic algorithm for an efficient sum-of-power-of-two coefficient format and the filter bank for the subsequent subband decomposition. By these steps, the computational complexity of our subband-selective GSC is greatly reduced compared to other adaptive GSC schemes, while performance is comparable or even enhanced due to subband decorrelation, as simulations indicate.
KW - broadband beamforming
KW - subband processing
KW - adaptive filters
KW - signal processing
KW - power systems
U2 - 10.1023/A:1022288116263
DO - 10.1023/A:1022288116263
M3 - Article
VL - 33
SP - 337
EP - 344
JO - Journal of VLSI Signal Processing
T2 - Journal of VLSI Signal Processing
JF - Journal of VLSI Signal Processing
SN - 0922-5773
IS - 3
ER -