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A VLSI implementation of logarithmic and exponential functions using a novel parabolic synthesis methodology compared to the CORDIC algorithm

In English

Författare

  • Peyman Pouyan
  • Erik Hertz
  • Peter Nilsson

Summary, in English

High performance implementations of unary functions are important in many applications e.g. in the wireless communication area. This paper shows the development and VLSI implementation of unary functions like the logarithmic and exponential function, by using a novel approximation methodology based on parabolic synthesis, which is compared to the well known CORDIC algorithm. Both designs are synthesized and implemented on an FPGA and as an ASIC. The results of such implementations are compared with metrics such as performance and area. The performance in the parabolic architecture is shown to exceed the CORDIC architecture by a factor 4.2, in a 65 nm Standard-VT ASIC implementation.

Publiceringsår

2011

Språk

Engelska

Dokumenttyp

Konferensbidrag

Ämne

  • Electrical Engineering, Electronic Engineering, Information Engineering

Conference name

European Conference on Circuit Theory and Design (ECCTD 2011)

Conference date

2011-08-29

Conference place

Linköping, Sweden

Status

Published

Forskningsgrupp

  • Digital ASIC