High Speed 17-tap Finite Impulse Response Filter based on Distributive Arithmetic Technique
Neha Thakur, Priyanshu Pandey · Journal of Emerging Technologies and Innovative Research · 2017
Low complexity and configurability is the key features in emerging communication applications in order to support multi-standards and operation modes. To obtain these features, efficient implementations of finite impulse response (FIR) filter with multiplier-less distributive arithmetic technique is proposed in this paper. In this technique consist of Look Up Table (LUT), shift register and accumulator. Based on this technique multipliers in FIR filter are removed. Multiplication is performed through shift and addition operations. The LUT can be subdivided into a number of LUT to reduce the size of the LUT for higher order filter. Each LUT operates on a different set of filter taps. Analysis on the performance of various filter orders with different address length are done using Xilinx synthesis tool. The proposed architecture provides less latency and less area compared with existing structure of FIR filter.