Robust blind multiuser detection against CDMA signature mismatch
Shuguang Cui; Zhi-Quan Luo; Zhi Ding
Acoustics, Speech, and Signal Processing, 2001. Proceedings. (ICASSP apos;01). 2001 IEEE International Conference on
Volume 4, Issue , 2001 Page(s):2297 - 2300 vol.4
Digital Object Identifier   10.1109/ICASSP.2001.940458
Summary:A common problem with the existing blind multiuser CDMA detectors is that their performance is very sensitive to the signature waveform mismatch (SWM) caused by channel distortion. We consider the problem of designing a blind multiuser CDMA detector which is robust to the SWM. We present a convex formulation for this problem by using the second order cone (SOC) programming. We also propose the use of recently developed interior point methods to efficiently solve the resulting SOC problem. Computer simulations indicate that the performance of our new robust blind multiuser detector is superior

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