| Paper: | SPTM-P12.10 | ||
| Session: | Adaptive Systems and Filtering I | ||
| Time: | Friday, May 19, 14:00 - 16:00 | ||
| Presentation: | Poster | ||
| Topic: | Signal Processing Theory and Methods: Adaptive Systems and Filtering | ||
| Title: | Steady-state Performance of Constrained Normalized Adaptive Filters for CDMA Systems | ||
| Authors: | Renato L. G. Cavalcante, Isao Yamada, Tokyo Institute of Technology, Japan | ||
| Abstract: | Constrained normalized adaptive filters are used as a computationally efficient class of receivers to decrease multiple access interference (MAI). Some receivers estimate the amplitude and/or use different normalization factors in order to improve the convergence speed. In this paper, we derive the steady-state performance of this class of receivers, from which it is revealed that the normalization factors that aim at increasing the convergence speed deteriorate the steady-state performance if the step-size is not changed. Additionally, we prove that an estimate of the desired user's amplitude can greatly improve the steady-state performance. Computer simulations show remarkably good agreement with our analysis. | ||
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