Subspace-Based Multiuser Detection under Spreading Code Mismatch

Ann-Chen CHANG  Zhi-Feng HUANG  

Publication
IEICE TRANSACTIONS on Communications   Vol.E86-B   No.8   pp.2529-2531
Publication Date: 2003/08/01
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Terrestrial Radio Communications
Keyword: 
wireless communication,  CDMA,  multiuser detector,  subspace-based technique,  

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Summary: 
This Letter proposes a way of resolving spreading code mismatch in blind multiuser detection with subspace-based technique. It has been shown that subspace-based (SSB) blind multiuser detectors demonstrate the advantages of fast convergence speed and less sensitivity to spreading code mismatch over constrained mean output energy (CMOE) detectors. With a corrected scheme of the desired user code, the proposed method offers more robust capabilities over existing SSB techniques. Numerical results show that the effectiveness of the proposed technique.