Hamming distance (HD)

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CTH-CAM: A Cryogenic eDRAM-Based CAM With 1–26 Tunable Hamming Distance

CTH-CAM: A Cryogenic eDRAM-Based CAM With 1–26 Tunable Hamming Distance 150 150
Author(s): Jincheng Wang, Yuxin Zhou, Bin Ning, Lintao Lan, Yifei Li, Xufeng Kou, Yuhao Shu, Yajun Ha

Abstract:

Cryogenic approximate content-addressable memory (ACAM) offers an appealing solution that allows mismatches between the query and the stored data, measured by the Hamming distance (HD). However, in ACAM designs, increasing the word length shrinks the matchline (ML) voltage spacing between adjacent HD tolerance levels, thereby limiting the tunable-HD tolerance range …

Published in: IEEE Journal of Solid-State Circuits
Page(s): 1 – 14
Year of Publication: 2026
Electronic ISSN: 1558-173X
DOI: 10.1109/JSSC.2026.3722705
Publisher: IEEE

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A 128-kbit Approximate Search-Capable Content-Addressable Memory (CAM) With Tunable Hamming Distance

A 128-kbit Approximate Search-Capable Content-Addressable Memory (CAM) With Tunable Hamming Distance 150 150
Author(s): Esteban Garzón, Eyal Rechef, Roman Golman, Odem Harel, Yuval Harary, Paz Snapir, Marco Lanuzza, Adam Teman, Leonid Yavits

Abstract:

The growing need for approximate matching in data-intensive applications, such as data analytics, machine learning, deep learning, and computational genomics has driven the proposal of our Hamming distance (HD) tolerant content-addressable memory (HD-CAM). HD-CAM features a modified NOR-type associative memory cell that leverages the discharge speed of the matchline (ML) …

Published in: IEEE Journal of Solid-State Circuits
Page(s): 3009 – 3019
Year of Publication: 2025
Electronic ISSN: 1558-173X
DOI: 10.1109/JSSC.2025.3529715
Publisher: IEEE

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