Neural Network with Momentum for Dynamic Source Separation and its Convergence Analysis
|
| Title | Neural Network with Momentum for Dynamic Source Separation and its Convergence Analysis |
| Authors | |
| Abstract | This paper addresses the problem of blind source separation (BSS) of independent sources from their linear mixtures in the over-determined cases ( ) with unknown and dynamically changing number of sources. The system architecture including an on-line source number estimator and an auto-adjust separation mechanism is considered based on the feed-forward neural network (FNN). To speed up and stabilize the iteration procedure, we propose to modify the FNN by adding a momentum term, and convergence analysis for the new algorithm is also presented, provided that the learning rate is set as a constant and the momentum factor an adaptive variable. Computer simulation results confirm that our approach is feasible for dynamic BSS cases and has satisfied convergence speed and steady-state error performance. Moreover, the proposed algorithm can ensure the separation of weak or badly scaled signals. |
| Publisher | ACADEMY PUBLISHER |
| Date | 2011-05-04 |
| Source | Journal of Networks Vol 6, No 5 (2011): Special Issue: Nomadic Services and Applications |
| Rights | Copyright © ACADEMY PUBLISHER - All Rights Reserved.To request permission, please check out URL: http://www.academypublisher.com/copyrightpermission.html. |