Advancements in FPGA?Based Design of Fixedpoint FIR Filters for Multirate Signal Processing Applications: A Comprehensive Review
Swati Soni · International Journal for Research in Applied Science and Engineering Technology · 2025
Abstract: Field‐programmable gate arrays (FPGAs) have emerged as a pivotal technology in the implementation of digital signal processing algorithms, particularly for fixed-point finite impulse response (FIR) filters in multirate applications. Recent advancements have significantly improved performance, power efficiency, and adaptability in harsh real‐time environments. This review synthesizes thirty studies that span innovations in design methodologies, architecture optimization, and practical deployments. It explores fixed-point arithmetic benefits and challenges in FIR filter implementations, discusses multirate signal processing techniques, and identifies emerging trends such as adaptive filter structures and low‐ latency architectures. Emphasis is placed on FPGA-specific optimizations, including resource utilization and parallel processing strategies. The review concludes by highlighting potential research directions and the need for further integration of artificial intelligence tools to enhance design automation. These insights will benefit researchers and engineers seeking robust, high-performance FPGA designs in complex signal processing environments.