Partitioned block frequency domain adaptive filter

Details Partitioned block frequency domain adaptive filter Partitioned block frequency domain adaptive filter

2006-09-05

2006-09-05

Mai, Tan V. (Department: 2193)

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

Reexamination Certificate

active

07103623

ABSTRACT:
The partitioned block frequency domain adaptive filter according to the invention includes a plurality of parallel arranged filter partitions. Each filter partition models a part of an impulse response of the adaptive filter and has update unit for updating filter coefficients of that filter partition by a circular convolution. The update unit intermittently constrain these filter coefficients by eliminating circular wrap-around artifacts of the circular convolution. The update unit is arranged for updating the filter coefficients in dependence on at least part of the circular wrap-around artifacts, resulting in an improved convergence behavior of the adaptive filter.

REFERENCES:
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Jia-Sien Soo et al, “Multidelay Block Frequency Domain Adaptive Filter”, vol. 38, No. 2, Feb. 1990. (abstract).

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