NDLI: Implementation of read-k-times BDDs on top of standard BDD packages

Content Provider	IEEE Xplore Digital Library
Author	Gunther, W. Drechsler, R.
Copyright Year	2001
Description	Author affiliation: Inst. of Comput. Sci., Albert-Ludwigs-Univ., Freiburg, Germany (Gunther, W.)
Abstract	Ordered Binary Decision Diagrams (OBDDs) are the state-of-the-art data structure in VLSI CAD for representation and manipulation of Boolean functions. But due to the ordering restriction, many Boolean functions cannot be represented efficiently. As one alternative read-k-times BDDs have been proposed. They are a generalization of OBDDs in the way that variables may occur up to k times on each path, while they may only occur once in OBDDs. More functions can be represented by read-k-times BDDs in polynomial space than by OBDDs, while many operations, like synthesis and satisfiability, still have polynomial worst case behavior. In this paper, we present a new technique for implementation of read-k-times BDD packages on top of standard OBDD implementations. Thus, highly optimized OBDD packages can be used and only few changes in the code are needed, while the new type of decision diagram allows much smaller representations. Experimental results are given to demonstrate the efficiency of the approach.
Sponsorship	Broadcom India
Starting Page	173
Ending Page	178
File Size	589399
Page Count	6
File Format	PDF
ISBN	0769508316
ISSN	10639667
DOI	10.1109/ICVD.2001.902657
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-01-07
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Data structures Boolean functions Binary decision diagrams Packaging Polynomials Very large scale integration Computer science Logic design Formal verification
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Hardware and Architecture

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