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Low-error reconfigurable fixed-width multiplier for image processing applications
J.J.N. Jeyakumar,
Published in Gazi Universitesi
2020
Volume: 33
   
Issue: 1
Pages: 90 - 104
Abstract
Compensating the error using additional circuitry is mandatory in a low-error fixed-width multiplier. Instead of compensating the error, reconfiguring n-bit fixed-width multiplier to n/2-bit error-free full-width multiplier using decomposed multiplication is proposed in this paper. The decomposed block multiplication using an area-efficient New Bit Pair Recoding (NBPR) algorithm in fixed-width mode shows a relatively lesser truncation error than existing truncated multipliers. Reconfigurable 16☓16 NBPR multiplier in three different modes (8☓8, 16☓8, 16☓16) with a fixed 16-bit product is verified on the TSMC 65nm CMOS standard cell library. The experimental results show that the NBPR multiplier consumes a lesser area than standard Booth multipliers. Evaluating the proposed multiplier in imaging shows improved PSNR with minimal error compared to other fixed-width multipliers. © 2020, Gazi University Eti Mahallesi. All rights reserved.
About the journal
JournalGazi University Journal of Science
PublisherGazi Universitesi
ISSN21471762