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Performance evaluation of CDMA reverse links with imperfect beamforming in a multicell environment using a simplified beamforming model

Yu, J ; Yao, Y D ; Molisch, Andreas LU and Zhang, J Y (2006) In IEEE Transactions on Vehicular Technology 55(3). p.1019-1031
Abstract
Reverse link capacity of a direct-sequence code-division multiple-access (DS-CDMA) system in a multicell environment has been studied recently, and significant capacity improvements due to the use of beamforming have been observed. However, system performance with beamforming will be affected by several impairments, such as direction of arrival estimation errors, array perturbations, mutual coupling, and signal spatial spreads. In this paper, reverse link performance of CDMA systems with beamforming under these impairments (imperfect beamforming) is investigated. A simplified beamforming model is developed to evaluate the system performance in terms of user capacity, bit-error rates (BER), and outage probabilities. Both... (More)
Reverse link capacity of a direct-sequence code-division multiple-access (DS-CDMA) system in a multicell environment has been studied recently, and significant capacity improvements due to the use of beamforming have been observed. However, system performance with beamforming will be affected by several impairments, such as direction of arrival estimation errors, array perturbations, mutual coupling, and signal spatial spreads. In this paper, reverse link performance of CDMA systems with beamforming under these impairments (imperfect beamforming) is investigated. A simplified beamforming model is developed to evaluate the system performance in terms of user capacity, bit-error rates (BER), and outage probabilities. Both signal-to-interference-ratio-based power control and strength-based power control are considered in this paper. The capacity and BER degradations due to different impairments are shown, and outage probabilities under different power control schemes are examined. (Less)
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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
mutual coupling, code-division multiple access (CDMA), array perturbation, beamforming, power control, spatial spread, user capacity
in
IEEE Transactions on Vehicular Technology
volume
55
issue
3
pages
1019 - 1031
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • wos:000237849600030
  • scopus:33744520421
ISSN
1939-9359
DOI
10.1109/TVT.2006.874556
language
English
LU publication?
yes
id
4086b145-3f1c-410d-b56a-885ce1cb8ef2 (old id 408375)
date added to LUP
2016-04-01 11:43:23
date last changed
2021-02-17 07:25:50
@article{4086b145-3f1c-410d-b56a-885ce1cb8ef2,
  abstract     = {Reverse link capacity of a direct-sequence code-division multiple-access (DS-CDMA) system in a multicell environment has been studied recently, and significant capacity improvements due to the use of beamforming have been observed. However, system performance with beamforming will be affected by several impairments, such as direction of arrival estimation errors, array perturbations, mutual coupling, and signal spatial spreads. In this paper, reverse link performance of CDMA systems with beamforming under these impairments (imperfect beamforming) is investigated. A simplified beamforming model is developed to evaluate the system performance in terms of user capacity, bit-error rates (BER), and outage probabilities. Both signal-to-interference-ratio-based power control and strength-based power control are considered in this paper. The capacity and BER degradations due to different impairments are shown, and outage probabilities under different power control schemes are examined.},
  author       = {Yu, J and Yao, Y D and Molisch, Andreas and Zhang, J Y},
  issn         = {1939-9359},
  language     = {eng},
  number       = {3},
  pages        = {1019--1031},
  publisher    = {IEEE - Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Transactions on Vehicular Technology},
  title        = {Performance evaluation of CDMA reverse links with imperfect beamforming in a multicell environment using a simplified beamforming model},
  url          = {http://dx.doi.org/10.1109/TVT.2006.874556},
  doi          = {10.1109/TVT.2006.874556},
  volume       = {55},
  year         = {2006},
}