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The Scientific World Journal
Volume 2014, Article ID 102651, 11 pages
Research Article

Application of Butterfly Clos-Network in Network-on-Chip

1Jiangxi University of Science and Technology, Ganzhou 341000, China
2School of Information Science and Engineering, Jishou University, Jishou 416000, China

Received 28 August 2013; Accepted 17 November 2013; Published 29 January 2014

Academic Editors: Y. Lu and F. Yu

Copyright © 2014 Hui Liu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper studied the topology of NoC (Network-on-Chip). By combining the characteristics of the Clos network and butterfly network, a new topology named BFC (Butterfly Clos-network) network was proposed. This topology integrates several modules, which belongs to the same layer but different dimensions, into a new module. In the BFC network, a bidirectional link is used to complete information exchange, instead of information exchange between different layers in the original network. During the routing period, other nondestination nodes can be used as middle stages to transfer data packets to complete the routing mission. Therefore, this topology has the characteristic of multistage. Simulation analyses show that BFC inherits the rich path diversity of Clos network, and it has a better performance than butterfly network in throughput and delay in a quite congested traffic pattern.