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15th Symposium on Reliable Distributed Systems (SRDS '96)
Diagnosing crosstalk-faulty switches in photonic networks
Niagara-on-the-Lake, Ontario, Canada
October 23-October 25
ISBN: 0-8186-7481-4
Chunming Qiao, Dept. of Electr. & Comput. Eng., State Univ. of New York, Buffalo, NY, USA
A procedure for diagnosing crosstalk and crosstalk-faulty switches in photonic dilated Benes networks (DBNs) is presented. It obtains the crosstalk ratios of each and every switch in an N/spl times/N DBN in 4N tests, along with O(N/spl middot/log/sup 2/N) calculations. One of its applications is to identify single or multiple switches in the DBN which are generating excessive crosstalk, or crosstalk-faulty. A recursive algorithm is used to configure the DBN for each test such that the necessary power measurements of the signals can be taken accurately. An important feature of the proposed diagnostic procedure is its suitability for automated test generation.
Index Terms:
optical communication; crosstalk-faulty switches; fault diagnosis; photonic dilated Benes networks; crosstalk ratios; recursive algorithm; computational complexity; optical communication network; electrooptical switches
Citation:
Chunming Qiao, "Diagnosing crosstalk-faulty switches in photonic networks," srds, pp.118, 15th Symposium on Reliable Distributed Systems (SRDS '96), 1996
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