Limits in FIR Subband Beamforming for Spatially Spread Nearfield Sources

Nedelko Grbic; Sven Nordholm; Antonio Cantoni

doi:10.1109/ISCAS.2003.1206024

Limits in FIR Subband Beamforming for Spatially Spread Nearfield Sources

Nedelko Grbic, Sven Nordholm, Antonio Cantoni

Western Australian Telecommunications Research Institute

Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

Abstract

This paper analyses optimal subband beamforming performance mainly aimed at speech enhancement and acoustic echo suppression for personal communication devices, personal computers and wireless cellular telephones. The focus is on theoretical limits of finite impulse response (FIR) beamformers for spatially spread sources in the array near-field. Performance of the Wiener solution is compared to the direct maximization of the array gain for different lengths of the FIR filters and different source interference spreads. The evaluation is performed individually in subbands with constant increasing logarithmic bandwidth. Results show that the difference between the Wiener solution and the direct array gain maximization is less than 2 dB in the measure of Signal-to-Noise plus Interference Ratio (SNIR), for small interference spread. With increasing interference spread the difference in SNIR performance increases, in favor of the array gain maximization.

Original language	English
Title of host publication	Proceedings of the 2003 International Symposium on Circuits and Systems. ISCAS '03.
Publisher	IEEE - Institute of Electrical and Electronics Engineers Inc.
Pages	516-519
Volume	2
ISBN (Print)	0-7803-7761-3
DOIs	https://doi.org/10.1109/ISCAS.2003.1206024
Publication status	Published - 2003 May
Externally published	Yes
Event	IEEE International Symposium on Circuits and Systems (ISCAS '03), 2003 - Imperial Queen's Park Hotel , Bangkok, Thailand Duration: 2003 May 25 → 2003 May 28

Conference

Conference	IEEE International Symposium on Circuits and Systems (ISCAS '03), 2003
Country/Territory	Thailand
City	Bangkok
Period	2003/05/25 → 2003/05/28

Subject classification (UKÄ)

Signal Processing

Access to Document

10.1109/ISCAS.2003.1206024

Cite this

@inproceedings{0fe4b10414ae408d99f9e3240583e4f9,

title = "Limits in FIR Subband Beamforming for Spatially Spread Nearfield Sources",

abstract = "This paper analyses optimal subband beamforming performance mainly aimed at speech enhancement and acoustic echo suppression for personal communication devices, personal computers and wireless cellular telephones. The focus is on theoretical limits of finite impulse response (FIR) beamformers for spatially spread sources in the array near-field. Performance of the Wiener solution is compared to the direct maximization of the array gain for different lengths of the FIR filters and different source interference spreads. The evaluation is performed individually in subbands with constant increasing logarithmic bandwidth. Results show that the difference between the Wiener solution and the direct array gain maximization is less than 2 dB in the measure of Signal-to-Noise plus Interference Ratio (SNIR), for small interference spread. With increasing interference spread the difference in SNIR performance increases, in favor of the array gain maximization.",

author = "Nedelko Grbic and Sven Nordholm and Antonio Cantoni",

year = "2003",

month = may,

doi = "10.1109/ISCAS.2003.1206024",

language = "English",

isbn = "0-7803-7761-3",

volume = "2",

pages = "516--519",

booktitle = "Proceedings of the 2003 International Symposium on Circuits and Systems. ISCAS '03.",

publisher = "IEEE - Institute of Electrical and Electronics Engineers Inc.",

address = "United States",

note = "IEEE International Symposium on Circuits and Systems (ISCAS '03), 2003 ; Conference date: 25-05-2003 Through 28-05-2003",

}

Grbic, N, Nordholm, S & Cantoni, A 2003, Limits in FIR Subband Beamforming for Spatially Spread Nearfield Sources. in Proceedings of the 2003 International Symposium on Circuits and Systems. ISCAS '03. . vol. 2, IEEE - Institute of Electrical and Electronics Engineers Inc., pp. 516-519, IEEE International Symposium on Circuits and Systems (ISCAS '03), 2003, Bangkok, Thailand, 2003/05/25. https://doi.org/10.1109/ISCAS.2003.1206024

Limits in FIR Subband Beamforming for Spatially Spread Nearfield Sources. / Grbic, Nedelko; Nordholm, Sven; Cantoni, Antonio.
Proceedings of the 2003 International Symposium on Circuits and Systems. ISCAS '03. . Vol. 2 IEEE - Institute of Electrical and Electronics Engineers Inc., 2003. p. 516-519.

Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

TY - GEN

T1 - Limits in FIR Subband Beamforming for Spatially Spread Nearfield Sources

AU - Grbic, Nedelko

AU - Nordholm, Sven

AU - Cantoni, Antonio

PY - 2003/5

Y1 - 2003/5

N2 - This paper analyses optimal subband beamforming performance mainly aimed at speech enhancement and acoustic echo suppression for personal communication devices, personal computers and wireless cellular telephones. The focus is on theoretical limits of finite impulse response (FIR) beamformers for spatially spread sources in the array near-field. Performance of the Wiener solution is compared to the direct maximization of the array gain for different lengths of the FIR filters and different source interference spreads. The evaluation is performed individually in subbands with constant increasing logarithmic bandwidth. Results show that the difference between the Wiener solution and the direct array gain maximization is less than 2 dB in the measure of Signal-to-Noise plus Interference Ratio (SNIR), for small interference spread. With increasing interference spread the difference in SNIR performance increases, in favor of the array gain maximization.

AB - This paper analyses optimal subband beamforming performance mainly aimed at speech enhancement and acoustic echo suppression for personal communication devices, personal computers and wireless cellular telephones. The focus is on theoretical limits of finite impulse response (FIR) beamformers for spatially spread sources in the array near-field. Performance of the Wiener solution is compared to the direct maximization of the array gain for different lengths of the FIR filters and different source interference spreads. The evaluation is performed individually in subbands with constant increasing logarithmic bandwidth. Results show that the difference between the Wiener solution and the direct array gain maximization is less than 2 dB in the measure of Signal-to-Noise plus Interference Ratio (SNIR), for small interference spread. With increasing interference spread the difference in SNIR performance increases, in favor of the array gain maximization.

U2 - 10.1109/ISCAS.2003.1206024

DO - 10.1109/ISCAS.2003.1206024

M3 - Paper in conference proceeding

SN - 0-7803-7761-3

VL - 2

SP - 516

EP - 519

BT - Proceedings of the 2003 International Symposium on Circuits and Systems. ISCAS '03.

PB - IEEE - Institute of Electrical and Electronics Engineers Inc.

T2 - IEEE International Symposium on Circuits and Systems (ISCAS '03), 2003

Y2 - 25 May 2003 through 28 May 2003

ER -

Limits in FIR Subband Beamforming for Spatially Spread Nearfield Sources

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