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Comments on "A linearly constrained constant modulus approach to blind adaptive multiuser interference suppression"

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2 Author(s)
Changjiang Xu ; Dept. of Telecommun. Eng., Nanjing Univ. of Posts & Telecommun., China ; Guangzeng Feng

For original paper see IEEE Commun. Lett., vol.2, no.8, p.217-19 (1998 August). A linearly constrained constant modulus (LCCM) receiver was presented in the above paper by Miguez et al. In this letter, we point out that the analysis in the above paper is incomplete and show in the noise-free case that the LCCM approach can completely remove multiple-access interference if and only if the desired user amplitude is no less than the critical value 1/spl radic/3. The simulation examples demonstrate the results.

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IEEE Communications Letters  (Volume:4 ,  Issue: 9 )