NDLI: Detection and removal of LCOs in IIR filters

Content Provider	IEEE Xplore Digital Library
Author	Zhang Yan-Zhong Yao Ya-Fen
Copyright Year	1992
Description	Author affiliation: Changcheng Inst. of Metrol. & Meas., Beijing, China (Zhang Yan-Zhong; Yao Ya-Fen)
Abstract	A finite state machine method is proposed for realizing IIR digital filters. This realization has a maximum error of 1/2 bit from the final result of infinite-precision arithmetic, and has no error growth during the processing period. It avoids the effects of the filter coefficient quantization and multiplication arithmetic errors. A connection matrix method is presented for detecting and locating the limit-cycle oscillations (LCOs). The concept of suboptimum successor based on the defined error function is introduced. A graph theory method is proposed for removing limit-cycle oscillations from digital filters. This method breaks the filter's cycles, connects the unstable state to its suboptimum successor, and forms a tree graph of stable filters. It introduces a minimum noise increase and hardly any increase in hardware complexity.<>
Starting Page	272
Ending Page	275
File Size	255742
Page Count	4
File Format	PDF
ISBN	0780305930
DOI	10.1109/ISCAS.1992.229961
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1992-05-10
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Liquid crystal on silicon IIR filters Digital filters Arithmetic Limit-cycles Automata Quantization Graph theory Tree graphs Hardware
Content Type	Text
Resource Type	Article

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