Accuracy evaluation of fixed-point based LMS algorithm

作者：Rocher Romuald^*; Menard Daniel; Sentieys Olivier; Scalart Pascal

来源：Digital Signal Processing, 2010, 20(3): 640-652.

DOI：10.1016/j.dsp.2009.10.007

• Adaptive filters
• Fixed-point arithmetic
• Quantization noise

The implementation of adaptive filters with fixed-point arithmetic requires computation quality evaluation. The accuracy may be determined by computing the global quantization noise power at the system output. In this paper, a new model for evaluating analytically the global noise power in LMS-based algorithms is presented. Thus, the model is developed for LMS and NLMS algorithms. The accuracy of our model is analyzed by simulations.

• 出版日期2010-5
• 单位INRIA