Title :
Conversion and Addition in Logarithmic Number Systems Using a Sum of Bit-Products
Author :
Johansson, Kenny ; Gustafsson, Oscar ; Wanhammar, Lars
Author_Institution :
Dept. of Electr. Eng., Linkoping Univ.
Abstract :
Computations in logarithmic number systems require realizations of four different elementary functions. In this work we utilize a recently proposed approximation method based on weighted sums of bit-products to realize these functions. It is shown that the considered method can be used to efficiently realize the different functions. However, a transformation is proposed to improve the results for functions with logarithmic characteristics
Keywords :
digital arithmetic; function approximation; table lookup; transforms; approximation method; bit-product sum; logarithmic number systems; Adaptive filters; Application software; Approximation methods; Computer architecture; Digital arithmetic; Function approximation; Interpolation; Linear approximation;
Conference_Titel :
Norchip Conference, 2006. 24th
Conference_Location :
Linkoping
Print_ISBN :
1-4244-0772-9
DOI :
10.1109/NORCHP.2006.329240
