Enhanced FIR Filter Architecture for Versatile Fixed and Reconfigurable Signal Processing
International Research Journal of Modernization in Engineering Technology and Science · 2024
Finite Impulse Response (FIR) filters are essential tools in signal processing, offering precise control over filtering characteristics.With finite-duration impulse responses, FIR filters ensure stability and simplicity in implementation, especially compared to their infinite impulse response (IIR) counterparts.Notably, FIR filters maintain linearity and can achieve linear-phase responses, preserving signal integrity without phase distortion.Their efficiency shines in multi-rate applications, facilitating decimation or interpolation with reduced computational load.Leveraging finite-precision arithmetic, FIR filters mitigate issues related to feedback, making them ideal for DSP systems.Additionally, their flexibility allows for fractional arithmetic, simplifying implementation on fixed-point DSP platforms.Understanding FIR tap configurations and multiply-accumulate operations is crucial for designing efficient filters with desired frequency responses.Transition bands play a pivotal role in defining filter characteristics, influencing the number of taps required.Implementation involves managing delay lines, often facilitated by circular buffers for seamless data processing.In summary, FIR filters offer a robust framework for signal filtering, balancing computational efficiency with precise control over frequency response.For the same filter length and the same block size, the proposed structure involves less ADP and less EPS than that of the existing direct-form blocks FIR structure.This Proposed System Implemented using Verilog HDL and Simulated by Modelsim 6.4 c and synthesized by Xilinx tool.The proposed system implemented in FPGA Spartan 3 XC3S 200 TQ-144.