ANALYSIS OF VARIOUS MCM ALGORITHMS FOR RECONFIGURABLE RRC FIR FILTER

M.Ragavi, J.Harirajkumar

Abstract: Low complexity and power consumption are the key concerns while designing reconfigurable pulse shaping FIR filter for multistandard wireless communication system. In FIR filter, the single input to be multiplied by a set of coefficients known as multiple constant multiplications. This multiple constant multiplication becomes an obstruction in many applications. To overcome that, Digit Based Recoding, Canonic Sign Digit, Common Subexpression Elimination and Binary Common Subexpression Elimination algorithms are used to optimize the number of addition and subtraction operations. While designing these MCM algorithms in the architecture of RRC FIR filter, Binary Common Subexpression Elimination (BCSE) algorithm provides the better performance in terms of area and power.

Keywords: Multiple Constant Multiplication (MCM), Root Raised Cosine Filter (RRC), Canonic Sign Digit (CSD), Multiple Sign Digit (MSD), Common Subexpression Elimination (CSE)

DOI: https://doi.org/10.15623/ijret.2015.0402096