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A new design for wide-sense nonblocking multicast switching networks

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2 Author(s)
Yuanyuan Yang ; Dept. of Electr. & Comput. Eng., New York State Univ., Stony Brook, NY, USA ; Jianchao Wang

We propose a design for a wide-sense nonblocking multicast switching network, which has many comparable properties to a strictly nonblocking Clos permutation network. For a newly designed four-stage N × N multicast network, its hardware cost in terms of number of crosspoints is about 2(3 + 2√2)N32/ = 11.66N32/, which is only a small constant factor higher than that of a three-stage nonblocking permutation network, and is lower than the O(-N3/2log N/loglog N) hardware cost of the well-known three-stage wide-sense nonblocking multicast network. In addition, the proposed four-stage nonblocking multicast network has a very simple routing algorithm with sub-linear time complexity, and does not require multicast capability for the switch modules in the input stage.

Published in:

Communications, 2004 IEEE International Conference on  (Volume:2 )

Date of Conference:

20-24 June 2004