NDLI: Wordlength determination algorithms for hardware implementation of linear time invariant systems with prescribed output accuracy

Content Provider	IEEE Xplore Digital Library
Author	Chan, S.C. Tsui, K.M.
Copyright Year	2005
Description	Author affiliation: Dept. of Electr. & Electron. Eng., Hong Kong Univ., China (Chan, S.C.; Tsui, K.M.)
Abstract	This paper proposes two novel algorithms for optimizing the hardware resources in finite wordlength implementation of linear time invariant systems. The hardware complexity is measured by the exact internal wordlength used for each intermediate data. The first algorithm formulates the design problem as a constrained optimization, from which an analytic closed-form solution of the internal wordlengths subject to a prescribed output accuracy can be determined by the Lagrange multiplier method. The second algorithm is based on a discrete optimization method called the marginal analysis method, and it yields the desired wordlengths in integer values. Both approaches are found to be very effective and they are well-suited to large scale systems such as software radio receivers. Design examples show that the proposed algorithms offer better results and a lower design complexity than conventional methods.
Starting Page	2607
Ending Page	2610
File Size	218690
Page Count	4
File Format	PDF
ISBN	0780388348
DOI	10.1109/ISCAS.2005.1465160
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-05-23
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Hardware Time invariant systems Algorithm design and analysis Constraint optimization Design optimization Closed-form solution Lagrangian functions Optimization methods Large-scale systems Software radio
Content Type	Text
Resource Type	Article

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