Finite Impulse Response (FIR) filter is a major building block in Digital Signal Processing (DSP) system. The conventional FIR filters are implemented by utilizing a normal adder, which consumes more area. Minimizing the hardware utilization of the adder is a significant challenge in FIR filter design. Generally, complexity of the FIR filter is dominated by the adder. So, an efficient FIR filter was designed with the help of Carry Select Adder (CSLA) to reduce area and hardware complexity of the accumulation block. The area has been reduced by using CSLA that is very significant idea while designing a less area filter. The proposed method named as Low Area-CSLA-FIR (LA-CSLA-FIR) filter. The LA-CSLA-FIR filter was implemented in Xilinx Field Programmable Gate Array (FPGA) on different devices such as Virtex-4, Virtex-5 and Virtex-6 by using Verilog code. The experimental results of the LA-CSLA-FIR filter design reduced average the FPGA device utilization: 15.38 % of LUTs, 8% of flip flops and 8% of slices on Virtex-5 compared to existing filter designs.
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