A high throughput digital Rank Order Filter in 0.18um CMOS technology

A high throughput digital Rank Order Filter (ROF) based on a modified bit-level algorithm has been implemented by using 0.18 μm CMOS technology and is presented in this paper. Parallel processing technique is used to increase the Filter speed and throughput. The proposed ROF is capable of giving the element of a certain rank from a given sequence of N elements in each window in each clock pulse by parallely operating M number of Rank Selection Circuits (RSCs). The performance of the proposed filter was investigated through Spice simulation. The simulation result was compared with that obtained from post fit simulation using FPGA.