Frequency invariant beamforming in subbands

Wei Liu, S. Weiss

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

5 Citations (Scopus)

Abstract

In this paper, two subband implementations of a frequency invariant beamformer (FIB) are studied. In the first structure, the received array signals are split into subbands and an FIB is operated in each of the corresponding decimated subbands, with a potential of achieving a lower computational complexity. As the spatio-temporal distribution of the subband signals is different from the original fullband signal, a modified design method of the FIB is proposed. Based on the subband implementation, we then change the sensor spacings of different subband signals so that lower frequency bands have a larger spacing, which results in a class of FIBs with scaled aperture with improved performance in lower frequencies. Several design examples are given to show the performance of our new structures.
LanguageEnglish
Title of host publicationProceedings of the of the 38th Asilomar Conference on Signals, Systems and Computers, 2004
PublisherIEEE
Pages1968-1972
Number of pages5
ISBN (Print)0-7803-8622-1
DOIs
Publication statusPublished - Nov 2004
EventThirty-Eighth Asilomar Conference on Signals, Systems and Computers - Pacific Grove, CA, United States
Duration: 7 Nov 200410 Nov 2004

Conference

ConferenceThirty-Eighth Asilomar Conference on Signals, Systems and Computers
CountryUnited States
CityPacific Grove, CA
Period7/11/0410/11/04

Fingerprint

Beamforming
Frequency bands
Computational complexity
Sensors

Keywords

  • array signal processing
  • computational complexity
  • frequency invariant beamforming

Cite this

Liu, W., & Weiss, S. (2004). Frequency invariant beamforming in subbands. In Proceedings of the of the 38th Asilomar Conference on Signals, Systems and Computers, 2004 (pp. 1968-1972). IEEE. https://doi.org/10.1109/ACSSC.2004.1399508
Liu, Wei ; Weiss, S. / Frequency invariant beamforming in subbands. Proceedings of the of the 38th Asilomar Conference on Signals, Systems and Computers, 2004 . IEEE, 2004. pp. 1968-1972
@inproceedings{d58a7034b59c484584a42647149c9cea,
title = "Frequency invariant beamforming in subbands",
abstract = "In this paper, two subband implementations of a frequency invariant beamformer (FIB) are studied. In the first structure, the received array signals are split into subbands and an FIB is operated in each of the corresponding decimated subbands, with a potential of achieving a lower computational complexity. As the spatio-temporal distribution of the subband signals is different from the original fullband signal, a modified design method of the FIB is proposed. Based on the subband implementation, we then change the sensor spacings of different subband signals so that lower frequency bands have a larger spacing, which results in a class of FIBs with scaled aperture with improved performance in lower frequencies. Several design examples are given to show the performance of our new structures.",
keywords = "array signal processing, computational complexity , frequency invariant beamforming",
author = "Wei Liu and S. Weiss",
year = "2004",
month = "11",
doi = "10.1109/ACSSC.2004.1399508",
language = "English",
isbn = "0-7803-8622-1",
pages = "1968--1972",
booktitle = "Proceedings of the of the 38th Asilomar Conference on Signals, Systems and Computers, 2004",
publisher = "IEEE",

}

Liu, W & Weiss, S 2004, Frequency invariant beamforming in subbands. in Proceedings of the of the 38th Asilomar Conference on Signals, Systems and Computers, 2004 . IEEE, pp. 1968-1972, Thirty-Eighth Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, United States, 7/11/04. https://doi.org/10.1109/ACSSC.2004.1399508

Frequency invariant beamforming in subbands. / Liu, Wei; Weiss, S.

Proceedings of the of the 38th Asilomar Conference on Signals, Systems and Computers, 2004 . IEEE, 2004. p. 1968-1972.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

TY - GEN

T1 - Frequency invariant beamforming in subbands

AU - Liu, Wei

AU - Weiss, S.

PY - 2004/11

Y1 - 2004/11

N2 - In this paper, two subband implementations of a frequency invariant beamformer (FIB) are studied. In the first structure, the received array signals are split into subbands and an FIB is operated in each of the corresponding decimated subbands, with a potential of achieving a lower computational complexity. As the spatio-temporal distribution of the subband signals is different from the original fullband signal, a modified design method of the FIB is proposed. Based on the subband implementation, we then change the sensor spacings of different subband signals so that lower frequency bands have a larger spacing, which results in a class of FIBs with scaled aperture with improved performance in lower frequencies. Several design examples are given to show the performance of our new structures.

AB - In this paper, two subband implementations of a frequency invariant beamformer (FIB) are studied. In the first structure, the received array signals are split into subbands and an FIB is operated in each of the corresponding decimated subbands, with a potential of achieving a lower computational complexity. As the spatio-temporal distribution of the subband signals is different from the original fullband signal, a modified design method of the FIB is proposed. Based on the subband implementation, we then change the sensor spacings of different subband signals so that lower frequency bands have a larger spacing, which results in a class of FIBs with scaled aperture with improved performance in lower frequencies. Several design examples are given to show the performance of our new structures.

KW - array signal processing

KW - computational complexity

KW - frequency invariant beamforming

U2 - 10.1109/ACSSC.2004.1399508

DO - 10.1109/ACSSC.2004.1399508

M3 - Conference contribution book

SN - 0-7803-8622-1

SP - 1968

EP - 1972

BT - Proceedings of the of the 38th Asilomar Conference on Signals, Systems and Computers, 2004

PB - IEEE

ER -

Liu W, Weiss S. Frequency invariant beamforming in subbands. In Proceedings of the of the 38th Asilomar Conference on Signals, Systems and Computers, 2004 . IEEE. 2004. p. 1968-1972 https://doi.org/10.1109/ACSSC.2004.1399508