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An associative RAM-based CAM and its application to broadband communications systems

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1 Author(s)
S. V. Kartalopoulos ; Lucent Technol., AT&T Bell Labs., Holmdel, NJ, USA

The content addressable memory (CAM) is a memory device that executes fast recognition and validation of binary patterns of a limited set, as opposed to the random access memory (RAM) that executes slow recognition of a large set of patterns. Here, we present a logic circuit which, combined with existing RAM, constructs an associative RAM-based content addressable memory (AR-CAM) that executes fast pattern recognition of very large pattern sets. In addition, we describe the applicability of the AR-CAM to broadband communications systems. Broadband communications systems with an aggregate bandwidth of tens or hundreds of Gbps require real-time recognition and translation of large pattern sets. Although CAM are a good candidate for such applications, nevertheless we demonstrate that AR-CAM can better and inexpensively accomplish this task

Published in:

IEEE Transactions on Neural Networks  (Volume:9 ,  Issue: 5 )