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A New Design of Nonblocking Permutation WDM Networks Based on Three-Stage Clos Network

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1 Author(s)
Yanjun Liu ; Sch. of Comput. Sci. & Technol., Univ. of Sci. & Technol. of China, Hefei, China

As optical communication becomes a promising networking choice to meet the ever-increasing demands on bandwidth, crossbar-like wavelength division multiplexing (WDM) switching network is widely used in parallel and distributed processing community. However, the hardware cost of the existing crossbar-like networks is very high. On the basis of three-stage Clos network, we propose an optimal design of strictly nonblocking permutation WDM switching networks named Permutation with Full Wavelength Conversion (PFWC) model, of which the hardware cost is reduced to O(k3/2N3/2) while the performance is kept high. Therefore, our PFWC model is much more cost-effective and thus practical in parallel and distributed systems.

Published in:

2009 First International Conference on Information Science and Engineering

Date of Conference:

26-28 Dec. 2009