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

Shuguang Cui; Zhi Quan Luo; Zhi Ding

doi:10.1109/SPAWC.2001.923887

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

Shuguang Cui
, Zhi Quan Luo
, Zhi Ding

Electrical and Computer Engineering

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

2 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 language	English (US)
Title of host publication	2001 IEEE 3rd Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2001
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	221-224
Number of pages	4
ISBN (Electronic)	0780367200
DOIs	https://doi.org/10.1109/SPAWC.2001.923887
State	Published - 2001
Event	3rd IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2001 - Taoyuan, Taiwan, Province of China Duration: Mar 20 2001 → Mar 23 2001

Publication series

Name	IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC
Volume	2001-January

Other

Other	3rd IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2001
Country/Territory	Taiwan, Province of China
City	Taoyuan
Period	3/20/01 → 3/23/01

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

Publisher link

10.1109/SPAWC.2001.923887

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Cui, S., Luo, Z. Q., & Ding, Z. (2001). Robust CDMA signal detection in the presence of user and interference signature mismatch. In 2001 IEEE 3rd Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2001 (pp. 221-224). Article 923887 (IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC; Vol. 2001-January). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/SPAWC.2001.923887

Robust CDMA signal detection in the presence of user and interference signature mismatch. / Cui, Shuguang; Luo, Zhi Quan; Ding, Zhi.
2001 IEEE 3rd Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2001. Institute of Electrical and Electronics Engineers Inc., 2001. p. 221-224 923887 (IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC; Vol. 2001-January).

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

Cui, S, Luo, ZQ & Ding, Z 2001, Robust CDMA signal detection in the presence of user and interference signature mismatch. in 2001 IEEE 3rd Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2001., 923887, IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC, vol. 2001-January, Institute of Electrical and Electronics Engineers Inc., pp. 221-224, 3rd IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2001, Taoyuan, Taiwan, Province of China, 3/20/01. https://doi.org/10.1109/SPAWC.2001.923887

Cui S, Luo ZQ, Ding Z. Robust CDMA signal detection in the presence of user and interference signature mismatch. In 2001 IEEE 3rd Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2001. Institute of Electrical and Electronics Engineers Inc. 2001. p. 221-224. 923887. (IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC). doi: 10.1109/SPAWC.2001.923887

Cui, Shuguang ; Luo, Zhi Quan ; Ding, Zhi. / Robust CDMA signal detection in the presence of user and interference signature mismatch. 2001 IEEE 3rd Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2001. Institute of Electrical and Electronics Engineers Inc., 2001. pp. 221-224 (IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC).

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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.",

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

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