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Novel techniques for bus power consumption reduction in realizations of sum-of-product computation

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4 Author(s)
Masselos, K. ; Dept. of Electr. & Comput. Eng., Patras Univ., Greece ; Merakos, P. ; Stouraitis, T. ; Goutis, C.E.

Novel techniques for power-efficient implementation of sum of product computation are presented. The proposed techniques aim at reducing the switching activity required for the successive evaluation of the partial products, in the busses connecting the storage elements where data and coefficients are stored to the functional units. This is achieved through reordering the sequence of evaluation of the partial products. Heuristics based on the traveling salesman problem are proposed to perform the reordering for different categories of algorithms. Information related to both data (dynamic) and coefficients (static) is used to drive the reordering. Experimental results from the application of the proposed techniques on several signal-processing algorithms have proven that significant switching activity savings can be achieved.

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Very Large Scale Integration (VLSI) Systems, IEEE Transactions on  (Volume:7 ,  Issue: 4 )