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Diagnosis of single faults in bitonic sorters

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2 Author(s)
Tsern-Huei Lee ; Dept. of Commun., Nat. Chiao Tung Univ., Hsinchu, Taiwan ; Chou, J.-J.

Bitonic sorters have recently been proposed to construct along with banyan networks the switching fabric of future broadband networks. Unfortunately, a single fault in a bitonic sorter may have disastrous consequences for the switching system. Therefore, a bitonic sorter must be proved to be free of faults before it can be used. We study the topological properties of bitonic sorters and present an efficient fault diagnosis procedure to detect, locate, and identify the fault type of single faults. Our diagnosis procedure can detect most single faults in two tests. Faults which cannot be detected in two tests can always be detected in four tests. Several binary search techniques are developed to locate a faulty sorting element (i.e. a 2×2 sorter)

Published in:

Networking, IEEE/ACM Transactions on  (Volume:2 ,  Issue: 5 )