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Abstract
In this work we consider coefficient reordering for low power realization of FIR filters on fixed-point multiply-accumulate (MAC) based architectures, such as DSP processors. Compared to previous work we consider the input data correlation in the ordering optimization. For this we model the input data using the dual bit type approach. Results show that compared with just optimizing the number of switches between coefficients, the proposed method works better when the input data is correlated, which can be assumed for most applications.
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Department of Electrical Engineering, Linköping University, SE-581 83 Linköping, Sweden
Oscar Gustafson & Kenny Johansson
Department of Electronics and Telecommunications, Norwegian University of Science and Technology (NTNU), NO-7491 Trondheim, Norway
Saeeid Tahmasbi Oskuii & Per Gunnar Kjeldsberg
- Oscar Gustafson
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- Saeeid Tahmasbi Oskuii
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- Kenny Johansson
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- Per Gunnar Kjeldsberg
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Gustafson, O., Oskuii, S.T., Johansson, K., Kjeldsberg, P.G. (2007). Switching Activity Reduction of MAC-Based FIR Filters with Correlated Input Data. In: Azémard, N., Svensson, L. (eds) Integrated Circuit and System Design. Power and Timing Modeling, Optimization and Simulation. PATMOS 2007. Lecture Notes in Computer Science, vol 4644. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-74442-9_51
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