Skip to Main content Skip to Navigation
Conference papers

Low Precision Table Based Complex Reciprocal Approximation

Abstract : A recently proposed complex valued division algorithm designed for efficient hardware implementations requires a prescaling step by a constant factor. Techniques for obtaining this prescaling factor have been mentioned by the authors, which serves to justify the feasibility of the algorithm but is inadequate for obtaining efficient implementations. Table based solutions are formulated in this paper for obtaining the prescaling factor, a low precision reciprocal approximation for a complex value, using techniques adopted from univariate function approximations. Two separate designs are proposed, one using a single table (a reference design) and another using generalized multipartite tables. The main contribution of this work is the extension of generalized multipartite table methods to a function of two variables. The multipartite tables derived were up to 67% more memory efficient than their single table counterparts.
Document type :
Conference papers
Complete list of metadata

Cited literature [8 references]  Display  Hide  Download
Contributor : Jean-Michel Muller Connect in order to contact the contributor
Submitted on : Wednesday, January 13, 2010 - 3:39:25 PM
Last modification on : Saturday, September 11, 2021 - 3:17:07 AM
Long-term archiving on: : Monday, October 22, 2012 - 12:40:44 PM


Publisher files allowed on an open archive


  • HAL Id : ensl-00436329, version 2



Jean-Michel Muller, Pouya Dormiani, Milos Ercegovac. Low Precision Table Based Complex Reciprocal Approximation. 43rd Asilomar Conference on signals, systems and computers, Nov 2009, Pacific Grove, California, United States. ⟨ensl-00436329v2⟩



Record views


Files downloads