Fast implementation of stack filters with vhdl-based synthesis and fpgas

This paper presents a rapid approach for designing and implementing stack filters in the hardware. The design cycle is speeded up using VHDL based synthesis and parametrizable models. To achieve a short implementation time, the filters are prototyped using Field Programmable Cate Arrays (FPGAs) from Xilinx Inc. The main emphasis is on finding out the efficient ways of describing nonlinear filter structures on VHDL, and mapping to the dedicated FPGA architecture. The performance and logic capacity studies are used to find out reasonable algorithms and applications to be implemented with FPGAs.