Presentation 2011-01-18
A Regular Expression Matching Circuit Based on a Decomposed Automaton
Hiroki NAKAHARA, Tsutomu SASAO, Munehiro MATSUURA,
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Abstract(in English) In this paper, we propose a regular expression matching circuit based on a decomposed automaton. To implement regular expressions on the hardware, first, we convert them to a non-deterministic finite automaton (NFA). Then, to reduce the number of states, we convert the NFA into a modular non-deterministic finite automaton with unbounded multi-character transition (MNFAU). Next, to realize it by a feasible amount of the hardware, we decompose the MNFAU into the deterministic finite automaton (DFA) and the NFA. The DFA part is implemented by an off-chip memory and a simple sequenser, while the NFA part is implemented by a cascade of logic cells. Also, this paper shows that the MNFAU based implementation is superior to the DFA and the NFA based ones, with respect to the area and time complexity.
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Paper # VLD2010-98,CPSY2010-53,RECONF2010-67
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Committee RECONF
Conference Date 2011/1/10(1days)
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Language JPN
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Title (in English) A Regular Expression Matching Circuit Based on a Decomposed Automaton
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1st Author's Name Hiroki NAKAHARA
1st Author's Affiliation Department of Computer Science and Electronics, Kyushu Institute of Technology()
2nd Author's Name Tsutomu SASAO
2nd Author's Affiliation Department of Computer Science and Electronics, Kyushu Institute of Technology
3rd Author's Name Munehiro MATSUURA
3rd Author's Affiliation Department of Computer Science and Electronics, Kyushu Institute of Technology
Date 2011-01-18
Paper # VLD2010-98,CPSY2010-53,RECONF2010-67
Volume (vol) vol.110
Number (no) 362
Page pp.pp.-
#Pages 6
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