R. P. Meenaakshi Sundhari and L. Murali. A High-Performance Hybrid FIR Filter Design using Distributed Arithmetic and Lookup Table. Dynamic Systems and Applications 30 (2021) No.8, 1273 – 1285

https://doi.org/10.46719/dsa20213084

ABSTRACT.
In recent days, Application Programming Interface (API) plays a major role in real time applications. Such interface modules apply a Finite impulse response (FIR) filter concept for processing the audio data. Major role of FIR filter decides the component size and complexity. To avoid such real time complexities, recent research literatures are conducting related to the filtering concepts. Since, FIR filters have an amazing property called maintaining linear phase and provide stable state. Moreover, the concepts of maintaining coefficients are difficult. Hence, the FIR filter design approaches are more spontaneous with architecture. It is necessary to select precise architecture type and configure it with Distributed Arithmetic (DA) concepts. The proposed method concentrates on implementing the concept of Hybrid Arithmetic modules, lookup table concepts and performs multiply and Accumulator (HAMAC) operations. For comparing the exactness of proposed method, some existing concepts like adaptive filter based on distributed arithmetic and New Distributed Arithmetic Formulation of Block Least Mean Square Algorithm based filters are reviewed. This research is verified with the factor N as 4, 16, 32 and 64. In that 177.96mW power is consumed for N=4 and its net delay is acquired as 20.747 ns. Further, the utilization of the design has the least number of flip flops.

Keywords: Adders, Delays, Distributed Arithmetic, Finite Impulse Response, Look-Up Table.