论文信息 - Self-adaptive source separation. II. Comparison of the direct, feedback, and mixed linear network

Self-adaptive source separation. II. Comparison of the direct, feedback, and mixed linear network

For pt.I see ibid., vol.45, p.918-26 (1997). Macchi and Moreau (1997) investigated stability and convergence of a new direct linear adaptive neural network intended for separating independent sources when it is controlled by the well-known Herault-Jutten algorithm. In this second part, we study the corresponding feedback adaptive network. For two globally sub-Gaussian sources, the network achieves quasi-convergence in the mean square sense toward a separating state. A novel mixed adaptive direct/feedback network that is free of implementation constraints is investigated from the points of view of stability and convergence and compared with the direct and feedback networks. The three networks have the same (low) complexity. The mixed one achieves the best trade-off between convergence speed and steady-state separation performance, independently of the specific mixture.

Eric Moreau | Odile Macchi | O. Macchi | E. Moreau

[1] Y. Bar-Ness,et al. Convergence and performance comparison of three different structures of bootstrap blind adaptive algorithm for multisignal co-channel separation , 1992, MILCOM 92 Conference Record.

[2] John Carlin,et al. Bootstrapping adaptive cross pol cancelers for satellite communications , 1982 .

[3] J. Fort. Stabilité de l'algorithme de séparation de sources de Jutten et Hérault , 1991 .

[4] J. Hérault,et al. Réseau de neurones à synapses modifiables: décodage de messages sensoriels composites par apprentissage non supervisé et permanent , 1984 .

[5] Odile Macchi,et al. Adaptive Processing: The Least Mean Squares Approach with Applications in Transmission , 1995 .

[6] Eric Moreau,et al. Two novel architectures for the self adaptive separation of signals , 1993, Proceedings of ICC '93 - IEEE International Conference on Communications.

[7] Christian Jutten,et al. Blind separation of sources, part I: An adaptive algorithm based on neuromimetic architecture , 1991, Signal Process..

[8] Esfandiar Sorouchyari,et al. Blind separation of sources, part III: Stability analysis , 1991, Signal Process..

[9] Eric Moreau,et al. Self-adaptive source separation .I. Convergence analysis of a direct linear network controlled by the Herault-Jutten algorithm , 1997, IEEE Trans. Signal Process..