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Content Provider | IEEE Xplore Digital Library |
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Author | Zeng, B. Laakso, T. Hartimo, I. Neuvo, Y. |
Copyright Year | 1991 |
Description | Author affiliation: Signal Proces. Lab., Tampere Univ. of Technol., Finland (Zeng, B.) |
Abstract | The authors propose the use of error feedback for roundoff noise reduction in cascade-form recursive digital filters employing floating-point arithmetic. The floating-point error feedback has a similar mechanism to the fixed-point error feedback. However, the optimal error feedback solution (in the sense of minimum mean-square error) for the floating-point case is different from the corresponding fixed-point case. The formulated optimal feedback coefficients are shown to be independent of the section of ordering and zero-pole pairing, which does not hold in the fixed-point case. Finally, a suboptimal error feedback is proposed and shown to provide a constant output SNR (signal-to-noise ratio) independent of the specific characteristics of the filter except the filter's order. Several examples are given to verify these results.< |
Starting Page | 1925 |
Ending Page | 1928 |
File Size | 590348 |
Page Count | 4 |
File Format | |
ISBN | 0780300033 |
ISSN | 15206149 |
DOI | 10.1109/ICASSP.1991.150759 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 1991-04-14 |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Feedback Digital filters Floating-point arithmetic Signal processing Limit-cycles Fixed-point arithmetic Computer errors Noise reduction Dynamic range Hardware |
Content Type | Text |
Resource Type | Article |
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