Novel approximate synthesis flow for energy-efficient FIR filter
2016 IEEE 34th International Conference on Computer Design (ICCD)(2016)
摘要
The portability of emerging computing systems demands further reduction in the power consumption of their components. Approximate computing can reduce power consumption by using a simplified or an inaccurate circuit. In this paper, the energy efficiency of a finite impulse response (FIR) filter is improved through approximate computing. We propose an approximate synthesis technique for an energy-efficient FIR filter with an acceptable level of accuracy. We employ the common subexpression elimination (CSE) algorithm to implement the FIR filter and replace conventional adder/subtractors with approximate ones. While yielding acceptable rates of accuracy, the proposed flow can attain a maximum energy saving of 50.7% in comparison with conventional FIR filter designs.
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关键词
approximate synthesis flow,energy-efficient FIR filter,computing systems,power consumption,energy efficiency,finite impulse response filter,common subexpression elimination algorithm
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