Design of modulo 2n+1 FIR filter architecture
M. Thiruveni, Dr.T.K Shanthi · International Journal of Managment, IT and Engineering · 2013
Filtering is one of the main operations in signal processing. The efficiency of the filter mainly depends on multiplier and adder. The modulo 2n+ 1 multiplier and adder are used to design modulo 2n + 1 FIR filter architecture which is useful in applications like Residue Number System, Digital Signal Processing applications and cryptographic algorithms. In this multiplier [1], one operand uses weighted representation and another operand use diminished-1 representation. The new multiplier reduces the number of partial products which in turn reduces the operational time and power. Modulo 2n + 1 adder [2] can produce modulo sums within the range {0, 2n}, which is more than the range {0, 2n − 1} produced by existing diminished-1 modulo 2n + 1 adders. Since both units are designed effectively, the proposed FIR filter will be efficient.