Robust CDMA multiuser detectors

Probability-constrained versus the worst-case-based design

Sergiu Vorobyov

Research output: Contribution to journalArticle

Abstract

In this letter, a robust code-division multiple-access (CDMA) multiuser detection technique which is based on the probability-constrained optimization approach is developed, and its relationship to the popular worst-case-based robust CDMA multiuser detection technique is established. The important advantage of the proposed probability-constrained optimization-based approach with respect to the worst-case-based design is that in the former approach, the parameter of the uncertainty region of the worst-case-based design is quantified in terms of the outage probability and second-order statistics of the user signature estimation error. A simulation example demonstrates the advantages of such statistically motivated choice of the parameter of the uncertainty region. © 2008 IEEE.

Original languageEnglish
Pages (from-to)273-276
Number of pages4
JournalIEEE Signal Processing Letters
Volume15
DOIs
Publication statusPublished - 2008

Fingerprint

Code division multiple access
Multiuser detection
Constrained optimization
Detectors
Outages
Error analysis
Statistics
Uncertainty

Keywords

  • Code-division multiple-access
  • Linear receivers
  • Mathematical programming
  • Multiuser detection
  • Robustness

Cite this

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title = "Robust CDMA multiuser detectors: Probability-constrained versus the worst-case-based design",
abstract = "In this letter, a robust code-division multiple-access (CDMA) multiuser detection technique which is based on the probability-constrained optimization approach is developed, and its relationship to the popular worst-case-based robust CDMA multiuser detection technique is established. The important advantage of the proposed probability-constrained optimization-based approach with respect to the worst-case-based design is that in the former approach, the parameter of the uncertainty region of the worst-case-based design is quantified in terms of the outage probability and second-order statistics of the user signature estimation error. A simulation example demonstrates the advantages of such statistically motivated choice of the parameter of the uncertainty region. {\circledC} 2008 IEEE.",
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Robust CDMA multiuser detectors : Probability-constrained versus the worst-case-based design. / Vorobyov, Sergiu.

In: IEEE Signal Processing Letters, Vol. 15, 2008, p. 273-276.

Research output: Contribution to journalArticle

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T2 - Probability-constrained versus the worst-case-based design

AU - Vorobyov, Sergiu

PY - 2008

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KW - Linear receivers

KW - Mathematical programming

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