High-Speed, Low-Complexity Systolic Designs of Novel Iterative Division Algorithms in GF(2^m)

  • Authors:
  • Chien-Hsing Wu;Chien-Ming Wu;Ming-Der Shieh;Yin-Tsung Hwang

  • Affiliations:
  • -;-;-;-

  • Venue:
  • IEEE Transactions on Computers
  • Year:
  • 2004

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Abstract

Abstract--We extend the binary algorithm invented by Stein and propose novel iterative division algorithms over {\rm GF}(2^m) for systolic VLSI realization. While Algorithm EBg is a basic prototype with guaranteed convergence in at most 2m-1 iterations, its variants, Algorithms EBd and EBdf, are designed for reduced complexity and fixed critical path delay, respectively. We show that Algorithms EBd and EBdf can be mapped to parallel-in parallel-out systolic circuits with low area-time complexities of {\rm O}(m^2\log\log m) and {\rm O}(m^2), respectively. Compared to the systolic designs based on the extended Euclid's algorithm, our circuits exhibit significant speed and area advantages.