Kth Largest Element Selection Circuit for Order Statistics Signal Processing

Kiichi URAHAMA  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E77-A   No.7   pp.1217-1218
Publication Date: 1994/07/25
Online ISSN: 
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Nonlinear Circuits and Systems
analog circuit,  order statistics,  median filter,  

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An analog circuit is devised which selects and outputs the kth largest element among n input voltages. The circuit is composed of n basic transconductance amplifiers connected mutually with an O(n) length wire, thus the complexity of the circuit is O(n). The circuit becomes particularly simple for the case of the selection of the median of inputs.