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Accuracy evaluation of fixed-point APA algorithm [adaptive filter applications]

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4 Author(s)
Rocher, R. ; ENSSAT/IRISA, Univ. of Rennes I, Lannion, France ; Menard, D. ; Sentieys, O. ; Scalart, P.

The implementation of adaptive filters with fixed-point arithmetic requires us to evaluate the computation quality. The accuracy can be determined by calculating the global quantization noise power in the system output. In this paper, a new model for evaluating analytically the global noise power in the APA (affine projection algorithm) is developed. The model is presented and applied to the NLMS-OCF. The accuracy of our model is analyzed by experimentation.

Published in:

Acoustics, Speech, and Signal Processing, 2005. Proceedings. (ICASSP '05). IEEE International Conference on  (Volume:5 )

Date of Conference:

18-23 March 2005