Design of a low power consumption pulse-shaping 1 : 4 interpolation FIR filter for W-CDMA applications

This paper presents the design and simulation of a power efficient 1:4 inte rpolation FIR filter with partitioned look Up Table (LUT) structure. Using the symmetry of the filter coefficients and the contents of the LUT the are a of the proposed filter is minimized. The two filters share the partitione d LUT and activate the LUT selectively to realize the low power operation. Experimental results suggest that the proposed filter reduces the power con sumption by 25% and simultaneously reduces the gate area by 7% compared to the previously proposed single-architecture dual-channel filter.