Design and Implementation of FIR Filter Utilizing Baugh Wooley Multiplier Integrated With Wallace Tree Configuration and Efficient Approximate Adders

FIR (Finite Impulse Response) filters play a crucial part in the field of digital signal processing, this is particularly important for areas such as audio processing, telecommunications, and image filtering. This paper explores the development and realization of an FIR filter using Verilog, with synthesis and verification carried out through the Vivado tool. The design utilizes Cutting-edge approximate arithmetic components, such as an approximate adder designed for efficiency in terms of area and power consumption (APEx) and an Approximate Baugh-Wooley multiplier integrated with Wallace Tree configuration designed for reversible logic, to optimize both area and delay in FPGA-based applications. Power consumption is further minimized through the application of clock gating techniques, enhancing overall performance. Experimental results reveal a substantial reduction in area and delay, while maintaining sufficient accuracy for practical applications. A comparative analysis of designs with and without clock gating demonstrates significant improvements in power efficiency, emphasizing the effectiveness of approximate arithmetic units and clock gating for low-power digital filtering solutions.