Multichannel adaptive beamforming and interference mitigation in multiuser CDMA systems

Keith W. Forsythe; Daniel W. Bliss; Catherine M. Keller

doi:10.1109/ACSSC.1999.832381

Multichannel adaptive beamforming and interference mitigation in multiuser CDMA systems

Keith W. Forsythe, Daniel W. Bliss, Catherine M. Keller

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

25 Scopus citations

Abstract

In CDMA systems, multiple users produce cochannel interference that is only partially mitigated by user-dependent spreading codes. Limitations in any closed-loop transmitter power control can create received power variations at the base station that are potentially large. Multichannel multiuser detectors are data-Adaptive receivers that provide interference mitigation as well as spatial and temporal diversity. These receivers are discussed in the context of CDMA applications. A maximum likelihood formulation of multiuser detection with antenna arrays is introduced to provide motivation and intuition. The proposed multiuser receiver incorporates space-Time beamforming and time-domain interference cancellation. Performance examples using simulated and experimental data are given along with comparisons with a variety of receiver types.

Original language	English (US)
Title of host publication	Conference Record of the 33rd Asilomar Conference on Signals, Systems, and Computers
Editors	Michael B. Matthews
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	506-510
Number of pages	5
ISBN (Electronic)	0780357000, 9780780357006
DOIs	https://doi.org/10.1109/ACSSC.1999.832381
State	Published - 1999
Externally published	Yes
Event	33rd Asilomar Conference on Signals, Systems, and Computers, ACSSC 1999 - Pacific Grove, United States Duration: Oct 24 1999 → Oct 27 1999

Publication series

Name	Conference Record of the 33rd Asilomar Conference on Signals, Systems, and Computers
Volume	1

Conference

Conference	33rd Asilomar Conference on Signals, Systems, and Computers, ACSSC 1999
Country/Territory	United States
City	Pacific Grove
Period	10/24/99 → 10/27/99

ASJC Scopus subject areas

Signal Processing
Computer Networks and Communications

Access to Document

10.1109/ACSSC.1999.832381

Cite this

Forsythe, K. W., Bliss, D. W., & Keller, C. M. (1999). Multichannel adaptive beamforming and interference mitigation in multiuser CDMA systems. In M. B. Matthews (Ed.), Conference Record of the 33rd Asilomar Conference on Signals, Systems, and Computers (pp. 506-510). Article 832381 (Conference Record of the 33rd Asilomar Conference on Signals, Systems, and Computers; Vol. 1). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ACSSC.1999.832381

Multichannel adaptive beamforming and interference mitigation in multiuser CDMA systems. / Forsythe, Keith W.; Bliss, Daniel W.; Keller, Catherine M.
Conference Record of the 33rd Asilomar Conference on Signals, Systems, and Computers. ed. / Michael B. Matthews. Institute of Electrical and Electronics Engineers Inc., 1999. p. 506-510 832381 (Conference Record of the 33rd Asilomar Conference on Signals, Systems, and Computers; Vol. 1).

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

Forsythe, KW, Bliss, DW & Keller, CM 1999, Multichannel adaptive beamforming and interference mitigation in multiuser CDMA systems. in MB Matthews (ed.), Conference Record of the 33rd Asilomar Conference on Signals, Systems, and Computers., 832381, Conference Record of the 33rd Asilomar Conference on Signals, Systems, and Computers, vol. 1, Institute of Electrical and Electronics Engineers Inc., pp. 506-510, 33rd Asilomar Conference on Signals, Systems, and Computers, ACSSC 1999, Pacific Grove, United States, 10/24/99. https://doi.org/10.1109/ACSSC.1999.832381

Forsythe KW, Bliss DW, Keller CM. Multichannel adaptive beamforming and interference mitigation in multiuser CDMA systems. In Matthews MB, editor, Conference Record of the 33rd Asilomar Conference on Signals, Systems, and Computers. Institute of Electrical and Electronics Engineers Inc. 1999. p. 506-510. 832381. (Conference Record of the 33rd Asilomar Conference on Signals, Systems, and Computers). doi: 10.1109/ACSSC.1999.832381

Forsythe, Keith W. ; Bliss, Daniel W. ; Keller, Catherine M. / Multichannel adaptive beamforming and interference mitigation in multiuser CDMA systems. Conference Record of the 33rd Asilomar Conference on Signals, Systems, and Computers. editor / Michael B. Matthews. Institute of Electrical and Electronics Engineers Inc., 1999. pp. 506-510 (Conference Record of the 33rd Asilomar Conference on Signals, Systems, and Computers).

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abstract = "In CDMA systems, multiple users produce cochannel interference that is only partially mitigated by user-dependent spreading codes. Limitations in any closed-loop transmitter power control can create received power variations at the base station that are potentially large. Multichannel multiuser detectors are data-Adaptive receivers that provide interference mitigation as well as spatial and temporal diversity. These receivers are discussed in the context of CDMA applications. A maximum likelihood formulation of multiuser detection with antenna arrays is introduced to provide motivation and intuition. The proposed multiuser receiver incorporates space-Time beamforming and time-domain interference cancellation. Performance examples using simulated and experimental data are given along with comparisons with a variety of receiver types.",

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AB - In CDMA systems, multiple users produce cochannel interference that is only partially mitigated by user-dependent spreading codes. Limitations in any closed-loop transmitter power control can create received power variations at the base station that are potentially large. Multichannel multiuser detectors are data-Adaptive receivers that provide interference mitigation as well as spatial and temporal diversity. These receivers are discussed in the context of CDMA applications. A maximum likelihood formulation of multiuser detection with antenna arrays is introduced to provide motivation and intuition. The proposed multiuser receiver incorporates space-Time beamforming and time-domain interference cancellation. Performance examples using simulated and experimental data are given along with comparisons with a variety of receiver types.

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Multichannel adaptive beamforming and interference mitigation in multiuser CDMA systems

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