Realization of Direct Form Fir Filter With Reduced Complexity SQRT Csla Adder

Abstract

Abstract-An efficient direct form finite impulse response (FIR) Filter is designed to enhance the performance of digital filtering operation. Multiplication and Accumulation (MAC) units are important logic element in the FIR filter. In the conventional direct form FIR filters the number of logical elements count and delay is high for using Ripple carry adder (RCA) based MAC structure. Overcome this issue by proposed the reduced complexity SQRT Carry select adder (CSLA) based MAC unit for Direct form filter with reduced coefficient. The proposed filter takes less delay and less number of logical elements used by the filter. The designed filter is simulated and evaluated, using Modelsim 6.3c and Xilinx ISE simulation tool.