NDLI: A two-stage angle-rotation architecture and its error analysis for efficient digital mixer implementation

Content Provider	IEEE Xplore Digital Library
Author	Dengwei Fu Willson, A.N.
Copyright Year	2004
Abstract	An efficient angle-rotation architecture, suitable for use in a digital mixer, is presented. The architecture employs a decomposition of the high-precision rotation-angle into a coarse angle and a fine angle, and employs two processing stages, coarse and fine. Only the coarse stage employs a ROM, and that ROM is extremely small. Small multipliers are shown to suffice while providing full accuracy at the system output. A systematic development of the architecture and its supporting theory and assumptions is given, along with the rationale for determining its structure. A rigorous analysis of its error sources is presented, as well as the computation of bounds for the various errors they induce at the system output. This error analysis is shown to lead to a straightforward means of designing an efficient two-stage angle-rotation unit for a digital mixer, given input/output bitwidths and performance specifications
Sponsorship	IEEE Circuits and Systems Society
Starting Page	604
Ending Page	614
Page Count	11
File Size	490307
File Format	PDF
ISSN	15498328
Volume Number	53
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Error analysis Read only memory Hardware Delay Computer architecture Synthesizers Frequency Table lookup Arithmetic trigonometric function generation Angle rotation CORDIC direct digital synthesizer (DDS) digital mixer low-latency synchronization
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Hardware and Architecture

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