FPGA-Based FIR Filter Design and Simulation
Weiqiang Zhang, Zihan Wang · Highlights in Science Engineering and Technology · 2025
This paper proposes an optimized design approach for a Finite Impulse Response (FIR) digital filter, leveraging parallel and pipelined architectures to enhance performance, with simulation results validated in ModelSim. FIR filters are crucial components in digital signal processing (DSP), commonly applied in communication systems, audio processing, and other real-time signal applications. As real-time systems demand high computational speed, the challenge of implementing FIR filters efficiently in hardware, particularly in resource-limited environments, becomes increasingly critical. This study addresses these challenges by incorporating parallel processing to enable simultaneous computation across multiple filter stages, significantly boosting processing speed. Additionally, a pipelined architecture is employed to decompose the filter’s operations into multiple stages, reducing latency and further improving throughput. The proposed design is implemented using Verilog Hardware Description Language (HDL), ensuring flexibility and scalability for various hardware platforms. The performance and functionality of the design are thoroughly verified through simulations in ModelSim, demonstrating that the parallel and pipelined FIR filter achieves an optimal trade-off between processing speed and resource consumption. The results show that the design is not only effective for high-frequency applications but also well-suited for embedded and real-time systems, where both speed and resource efficiency are essential. Future work will focus on exploring additional optimizations for filter architectures to further enhance system performance and expand the design's applicability in dynamic and resource-constrained environments.