Sorting long sequences in a single hop radio network

  • Authors:
  • Marcin Kik

  • Affiliations:
  • Institute of Mathematics and Computer Science, Wrocław University of Technology, Wrocław, Poland

  • Venue:
  • MFCS'06 Proceedings of the 31st international conference on Mathematical Foundations of Computer Science
  • Year:
  • 2006

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Abstract

We propose an algorithm for merging two sorted sequences of length km stored in two sequences of m stations of single-hop single-channel radio network, where each station stores a block of of k consecutive elements. The time and energetic cost of this algorithm are 6mk+8m–4 and 8k+4⌈log2(m+1)⌉+6, respectively. This algorithm can be applied for sorting a sequence of length N=kn in a network consisting of n stations with memory limited by Θ(k) words. For $k=\Omega(\lg n)$, the energetic cost of such sorting is $O(k\cdot\lg n)$ and the time is $O(N\lg n)$. Moreover, the constants hidden by the big “Oh” are reasonably small, to make the algorithm attractive for practical applications.