VLSI Architecture for FIR Filter using Radix-4 Booth Multiplier and CBL Adder
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Abstract
The main objective of this research paper is to design architecture for finite impulse response (FIR) filter using radix-4 booth multiplier and common Boolean logic (CBL) adder. Finite Impulse response (FIR) filters are extensively utilized in digital signal processing in which different filter parts operate at different rates. It has applications in communication transmitters and receivers. FIR filters when implemented use multipliers and accumulators. There are various types of multiplier structure algorithms and their variations such as Combinational multiplier, Wallace Tree multiplier, Array multiplier and Sequential multiplier and Booth multiplier. Booth multipliers reduce the resulting number of partial products generated as a result of multiplication of two binary numbers. This paper presents a VLSI architecture for FIR filters integrating the Radix-4 Booth Multiplier and Carry Bypass Logic (CBL) Adder, improving speed, power efficiency, and area utilization. Performance comparisons with conventional architectures highlight the benefits of the proposed design.
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