Robust CDMA signal detection in the presence of user and interference signature mismatch

Shuguang Cui, Zhi Quan Luo, Zhi Ding

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

1 Scopus citations

Abstract

Signal detection in multiuser CDMA systems is particularly attractive when the desired user signature and some interferer signatures are known and are not completely orthogonal at the receiver. As many multiuser systems must deal with the near-far problem, a weakness common to several known blind multiuser CDMA detectors is that the detection performance is very sensitive to signature waveform mismatch (SWM) which occurs a result of channel distortion. We consider the design of a partially blind multiuser CDMA detector that is robust to the SWM. We present a convex formulation of this problem by using second-order cone programming (SOCP). The resulting SOCP can be solved efficiently using the recently developed interior point methods. Computer simulations indicate that the performance of our new robust multiuser detector is superior to the one that does not utilize the interference information.

Original languageEnglish (US)
Title of host publication2001 IEEE 3rd Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2001
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages221-224
Number of pages4
ISBN (Electronic)0780367200
DOIs
StatePublished - 2001
Event3rd IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2001 - Taoyuan, Taiwan, Province of China
Duration: Mar 20 2001Mar 23 2001

Publication series

NameIEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC
Volume2001-January

Other

Other3rd IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2001
Country/TerritoryTaiwan, Province of China
CityTaoyuan
Period3/20/013/23/01

Bibliographical note

Publisher Copyright:
© 2001 IEEE.

Keywords

  • Computational Intelligence Society
  • Computer simulation
  • Detectors
  • Matched filters
  • Multiaccess communication
  • Multiple access interference
  • Multiuser detection
  • Robustness
  • Signal detection
  • Timing

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