Abstract
In this work, two approaches to realize a look up table (LUT) based finite impulse response (FIR) filter using Residue Number System (RNS) are proposed. The proposed implementations take advantage of shift and add approach offered by the chosen moduli set. The two proposed filter architecture are compared with an earlier proposed version of reconfigurable RNS FIR filter. The filters are synthesized using Cadence RTL compiler in UMC 90 nm technology. The performance of the filters are compared in terms of Area (A), Power (P), and Delay (T). The results show that one of the proposed architecture offers significant improvement in terms of delay, while the second approach is well suited for applications that require minimal power and area. Both implementations offer advantage in area-delay AT and power-delay-product PTP. Proposed approaches are also verified functionally using Altera DSP Builder.
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