A new VLSI architecture without global broadcast for 2-D digital filters

Abstract

In this paper, we propose the new two-dimensional (2-D) systolic-array structures of IIWFIR digital filters without global broadcast by the different derivation and another systolic transformation. For more practical considerations, we further provide a detailed block diagram of a 2-D FIR filter using recently proposed multiplier to reduce the roundoff quantization error in the logic-gate level. These proposed systolic structures amenable to VLSI implementation permit the 2-D input sequence to be scanned in row-wise mode and locally broadcast one value each clock per delay element.