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Subspace-Based Multiuser Detection under Spreading Code Mismatch
Ann-Chen CHANG Zhi-Feng HUANG
IEICE TRANSACTIONS on Communications
Publication Date: 2003/08/01
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Terrestrial Radio Communications
wireless communication, CDMA, multiuser detector, subspace-based technique,
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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.