Adaptive digital filter, and method of renewing coefficients the

Details Adaptive digital filter, and method of renewing coefficients the Adaptive digital filter, and method of renewing coefficients the

1992-08-27

1994-04-12

Smith, Jerry

Boots, shoes, and leggings

G06F 1531

Patent

active

053031733

ABSTRACT:
An adaptive digital filter has a series of delay elements for imparting a unit delay of one sampling interval to successive input data samples in order to concurrently obtain a set of data samples of different sampling items. Each set of data samples are multiplied by respective coefficients, and the resulting multiplier outputs are added together into a filter output for comparison with a reference signal. The coefficients are renewed a preassigned number of times during each sampling interval, and the last renewed coefficients are used for each new set of data samples. For such coefficient renewal, a plurality of arithmetic circuits are connected in parallel for simultaneously performing the necessary computations for the renewal of all the coefficients.

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Takahari, "Performance Improvement of LMS Algorithm Using Hopfield Model Network", IEEE Global Telecommunications Conference and Exhibition, vol. 2, pp. 1356-1360, 1990.
Takahashi, "Performance Improvement of LMS Algorithm," The Transactions of the Institute of Electronics, Information and Communication Engineers, vol. 74-A, No. 1 (Jan. 25, 1991), pp. 19-24.
Mitsuo Takeda et al., "Neural Networks for Computation: Number Representations and Programming Complexity," Applied Optics, vol. 25, No. 18 (Sep. 15, 1986), pp. 3033-3046.

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