Optimal Step-Size Constant Modulus Algorithm

Vicente Zarzoso (1) , Pierre Comon (1)

1 Laboratoire d'Informatique, Signaux, et Systèmes de Sophia-Antipolis (I3S) / Equipe SIGNAL

The step size leading to the global minimum of the constant modulus (CM) criterion along the search direction can be obtained algebraically at each iteration among the roots of a third-degree polynomial. The resulting optimal step-size CMA (OS-CMA) is compared with other CM-based iterative techniques in terms of performance-versus-complexity trade-off.

Mots clés: Blind equalization; constant modulus; CMA

Domaines: Traitement du signal et de l'image [eess.SP]; Traitement du signal et de l'image [eess.SP]

Vicente Zarzoso, Pierre Comon. Optimal Step-Size Constant Modulus Algorithm. IEEE Transactions on Communications, 2008, 56 (1), pp.10-13. ⟨10.1109/TCOMM.2008.050484⟩. ⟨hal-00327594⟩