A further result on fault-free cycles in faulty folded hypercubes

  • Authors:
  • Sun-Yuan Hsieh;Che-Nan Kuo;Hsin-Hung Chou

  • Affiliations:
  • Department of Computer Science and Information Engineering, National Cheng Kung University, Tainan, Taiwan;Department of Computer Science and Information Engineering, National Cheng Kung University, Tainan, Taiwan;Department of Information Management, Chang Jung Christian University, Tainan County, Taiwan

  • Venue:
  • Information Processing Letters
  • Year:
  • 2009

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Abstract

Folded hypercube is a well-known variation of the hypercube structure and can be constructed from a hypercube by adding a link to every pair of nodes with complementary addresses. Let FF"v (respectively, FF"e) be the set of faulty nodes (respectively, faulty links) in an n-dimensional folded hypercube FQ"n. Fu has showed that FQ"n-FF"v-FF"e for n=3 contains a fault-free cycle of length at least 2^n-2|FF"v| if |FF"v|+|FF"e|==n that were not covered by Fu's result. We obtain the same lower bound of the longest fault-free cycle length, 2^n-2|FF"v|, under the constraints that (1) |FF"v|+|FF"e|=