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This paper analyzes the main sources of power consumption in
Networks-on-Chip (NoC)-based systems. Analytical power models of global
interconnection links are studied at different levels of abstraction.
Additionally, power measurement experiments are performed for different
types of routers. Based on this study, we propose a new topology-based
methodology to optimize the power consumption of complex NoC-based systems
at early design phases. The efficiency of the proposed methodology is
verified through a case study of an MPEG4 video application. Experimental
results show a promising improvement in power consumption (8.55%), average
number of hops (10.80%), and number of global links (56.25%) compared to
the best known related work.
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