Associative Memory for Nearest-Hamming-Distance Search Based on Frequency Mappin

Abstract

The developed associative-memory architecture uti- lizes a mapping operation of the Hamming distances into frequency space with ring oscillators programmable in discrete frequency steps. As a result fast word-parallel search of the nearest Ham- ming distance with low power consumption is obtained. Addition- ally, high robustness against fabri cation-related variations of the MOSFET characteristics is achievable by design because the size of the frequency steps is a freely selectable design param