Title :
Comments on "Closed-form analysis of linearly constrained CMA-based blind multiuser detector"
Author :
Xu, Changjiang ; Kwak, Kyung Sup
Author_Institution :
Dept. of Telecommun. Eng., Nanjing Univ. of Posts & Telecommun., China
fDate :
7/1/2001 12:00:00 AM
Abstract :
We point out that the proof of global convergence of LCCM detector is incorrect in the paper by Tang et al. (see ibid., vol.4, no.9, p.273-76, 2000). According to propositions presented in the paper by Xu and Feng (see Electron. Lett., vol.36, no.2, p.171-72, 2000), we further analyze the conditions for global convergence of LCCM detector, and give the low bound of constraint on the power of desired user.
Keywords :
code division multiple access; convergence of numerical methods; multiuser channels; signal detection; CMA-based multiuser detector; DS-CDMA; LCCM detector; closed-form analysis; desired user power; global convergence conditions; linearly constrained blind multiuser detector; low bound; Baseband; Convergence; Covariance matrix; Detectors; Equations; Filtering; Filters; Multiaccess communication; Multiuser detection; Power system modeling;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/4234.935745
