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For multiplierless FIR filter design and implementation, optimization of the product accumulation block (PAB) in transposed direct form structure has been ignored by most of the research. In this work, the power consumption of the PABs of FIR filters is studied theoretically and experimentally. It is shown that the PAB contributes most of the total power consumption in multiplierless FIR filters....
In the design of multiplierless finite impulse response (FIR) filters, tremendous efforts have been made to reduce the number of adders of the multiplier block for the reduction of overall chip area and power consumption. However, fewer in the multiplier block do not necessarily lead to lower power consumption, since the structural adders dominate the power consumption of an FIR filter circuit. In...
The switchings in the multiple constant multiplier (MCM) block of FIR filters are heavily affected by the spatial correlation of inputs at each computation unit—adders in this case. In this work, a new switching activity model for the MCM blocks is developed by taking the spatial correlation of inputs of each adder into consideration. Based on this model, a power measurement is proposed to estimate...
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