Reducing the fractional rank of interference with space-time-frequency adaptive beamforming

Shawn Kraut; Adam R. Margetts; Daniel Bliss

doi:10.1109/ACSSC.2013.6810661

Reducing the fractional rank of interference with space-time-frequency adaptive beamforming

Shawn Kraut, Adam R. Margetts, Daniel Bliss

Electrical, Computer, and Energy Engineering, School of (IAFSE-ECEE)

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Scopus citations

Abstract

When wideband interference is subject to multi-path, the rank of the interference component sensed at a receive-antenna array increases. In a MIMO communications system, this makes it more challenging to suppress the interference and close the link. In this paper we investigate the use of adaptive filters to suppress interference, by quantifying the impact of multiple time taps and frequency 'taps' on the rank of the interference. We show that as the number of taps increases, the relative rank of the interference decreases asymptotically to one over the number of receive antennas. We verify this with measurements of a broadcast interference source.

Original language	English (US)
Title of host publication	Conference Record of the 47th Asilomar Conference on Signals, Systems and Computers
Publisher	IEEE Computer Society
Pages	2022-2025
Number of pages	4
ISBN (Print)	9781479923908
DOIs	https://doi.org/10.1109/ACSSC.2013.6810661
State	Published - Jan 1 2013
Event	2013 47th Asilomar Conference on Signals, Systems and Computers - Pacific Grove, CA, United States Duration: Nov 3 2013 → Nov 6 2013

Publication series

Name	Conference Record - Asilomar Conference on Signals, Systems and Computers
ISSN (Print)	1058-6393

Other

Other	2013 47th Asilomar Conference on Signals, Systems and Computers
Country/Territory	United States
City	Pacific Grove, CA
Period	11/3/13 → 11/6/13

ASJC Scopus subject areas

Signal Processing
Computer Networks and Communications

Access to Document

10.1109/ACSSC.2013.6810661

Cite this

Kraut, S., Margetts, A. R., & Bliss, D. (2013). Reducing the fractional rank of interference with space-time-frequency adaptive beamforming. In Conference Record of the 47th Asilomar Conference on Signals, Systems and Computers (pp. 2022-2025). [6810661] (Conference Record - Asilomar Conference on Signals, Systems and Computers). IEEE Computer Society. https://doi.org/10.1109/ACSSC.2013.6810661

Reducing the fractional rank of interference with space-time-frequency adaptive beamforming. / Kraut, Shawn; Margetts, Adam R.; Bliss, Daniel.

Conference Record of the 47th Asilomar Conference on Signals, Systems and Computers. IEEE Computer Society, 2013. p. 2022-2025 6810661 (Conference Record - Asilomar Conference on Signals, Systems and Computers).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Kraut, S, Margetts, AR & Bliss, D 2013, Reducing the fractional rank of interference with space-time-frequency adaptive beamforming. in Conference Record of the 47th Asilomar Conference on Signals, Systems and Computers., 6810661, Conference Record - Asilomar Conference on Signals, Systems and Computers, IEEE Computer Society, pp. 2022-2025, 2013 47th Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, United States, 11/3/13. https://doi.org/10.1109/ACSSC.2013.6810661

Kraut S, Margetts AR, Bliss D. Reducing the fractional rank of interference with space-time-frequency adaptive beamforming. In Conference Record of the 47th Asilomar Conference on Signals, Systems and Computers. IEEE Computer Society. 2013. p. 2022-2025. 6810661. (Conference Record - Asilomar Conference on Signals, Systems and Computers). doi: 10.1109/ACSSC.2013.6810661

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AB - When wideband interference is subject to multi-path, the rank of the interference component sensed at a receive-antenna array increases. In a MIMO communications system, this makes it more challenging to suppress the interference and close the link. In this paper we investigate the use of adaptive filters to suppress interference, by quantifying the impact of multiple time taps and frequency 'taps' on the rank of the interference. We show that as the number of taps increases, the relative rank of the interference decreases asymptotically to one over the number of receive antennas. We verify this with measurements of a broadcast interference source.

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Reducing the fractional rank of interference with space-time-frequency adaptive beamforming

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