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Low cost logarithmic techniques for high-precision computations

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3 Author(s)
Lam, S.K. ; Centre for High Performance Embedded Syst., Nanyang Technol. Univ., Singapore ; Chaudhary, D.K. ; Srikanthan, T.

In this paper, we propose a novel high-precision logarithmic conversion method that relies on linear approximation to reduce the hardware cost and non-linear approximation to increase the conversion precision. It has been shown that for an 8-bit number conversion, the proposed method can achieve a precision of 10 fractional bits with only 24 Look-Up Table (LUT) entries, thereby justifying the approach for incorporation into low-cost and high-precision applications such as an environment modeling strategy for dynamic path planning.

Published in:

Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on  (Volume:5 )

Date of Conference:

25-28 May 2003

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