Authors Name: Perika Kalanwesh, E.Parusha Ramu
Digital filters are the essential units for digital signal processing systems. Traditionally, digital filters are achieved in Digital Signal Processor (DSP), but DSP-based solution cannot meet the high speed requirements in some applications for its sequential structure. Nowadays, Field Programmable Gate Array (FPGA) technology is widely used in digital signal processing area because FPGA-based solution can achieve high speed due to its parallel structure and configurable logic, which provides great flexibility and high reliability in the course of design and later maintenance. In general, Digital filters are divided into two categories, including Finite Impulse Response (FIR) and Infinite Impulse Response (IIR). And FIR filters are widely applied to a variety of digital signal processing areas for the virtues of providing linear phase and system stability.
Keywords –Distributed Arithmetic; FIR; pipeline; LUT; FPGA