Fixed-Width Group CSD Multiplier Design

Yong-Eun KIM  Kyung-Ju CHO  Jin-Gyun CHUNG  Xinming HUANG  

Publication
IEICE TRANSACTIONS on Information and Systems   Vol.E93-D   No.6   pp.1497-1503
Publication Date: 2010/06/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.E93.D.1497
Print ISSN: 0916-8532
Type of Manuscript: PAPER
Category: Fundamentals of Information Systems
Keyword: 
fixed-width,  GCSD multiplier,  quantization error,  digital arithmetic,  

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Summary: 
This paper presents an error compensation method for fixed-width group canonic signed digit (GCSD) multipliers that receive a W-bit input and generate a W-bit product. To efficiently compensate for the truncation error, the encoded signals from the GCSD multiplier are used for the generation of the error compensation bias. By Synopsys simulations, it is shown that the proposed method leads to up to 84% reduction in power consumption and up to 78% reduction in area compared with the fixed-width modified Booth multipliers.