Title :
Convergence analysis of the CMA blind equalizer
Author :
Cusani, R. ; Laurenti, A.
Author_Institution :
INFOCOM Dept., Rome Univ., Italy
Abstract :
The convergence behaviour of the constant modulus algorithm (CMA) is analytically evaluated in terms of the mean and the variance of the equalized sequence conditioned on the transmitted symbol, thus characterizing the dispersion pattern of the equalized samples around the QAM constellation points. This extends to the CMA and improves the approach of Weerackody et al. (see ibid., vol.40, no.6, p.1383, 1992) , where the MSE trajectory of the generalized Sato algorithm (GSA) was analysed.<>
Keywords :
convergence of numerical methods; equalisers; error analysis; quadrature amplitude modulation; signal sampling; CMA blind equalizer; MSE trajectory; QAM constellation points; channel impulse response; constant modulus algorithm; convergence analysis; dispersion pattern; equalized samples; equalized sequence; generalized Sato algorithm; mean; transmitted symbol; variance; Algorithm design and analysis; Analysis of variance; Blind equalizers; Convergence; Pattern analysis; Quadrature amplitude modulation;
Journal_Title :
Communications, IEEE Transactions on
