NDLI: 32-bit cyclic redundancy codes for Internet applications

Content Provider	IEEE Xplore Digital Library
Author	Koopman, P.
Copyright Year	2002
Description	Author affiliation: Dept. of Electron. & Comput. Eng., Carnegie Mellon Univ., Pittsburgh, PA, USA (Koopman, P.)
Abstract	Standardized 32-bit cyclic redundancy codes provide fewer bits of guaranteed error detection than they could, achieving a Hamming Distance (HD) of only 4 for maximum-length Ethernet messages, whereas HD=6 is possible. Although research has revealed improved codes, exploring the entire design space has previously been computationally intractable, even for special-purpose hardware. Moreover, no CRC polynomial has yet been found that satisfies an emerging need to attain both HD=6 for 12K bit messages and HD=4 for message lengths beyond 64 Kbits. This paper presents results from the first exhaustive search of the 32-bit CRC design space. Results from previous research are validated and extended to include identifying all polynomials achieving a better HD than the IEEE 802.3 CRC-32 polynomial. A new class of polynomials is identified that provides HD=6 up to nearly 16K bit and HD=4 up to 114K bit message lengths, providing the best achievable design point that maximizes error detection for both legacy and new applications, including potentially iSCSI and application-implemented error checks.
Sponsorship	IEEE Comput. Soc. Tech. Committee on Fault-Tolerant Comput. (TCFTC) IFIP Working Group 10.4 on Dependable Comput. & Fault Tolerence DARPA LAAS-CNRS Univ. Michigan
Starting Page	459
Ending Page	468
File Size	696682
Page Count	10
File Format	PDF
ISBN	0769511015
DOI	10.1109/DSN.2002.1028931
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-06-23
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Internet Polynomials Cyclic redundancy check Ethernet networks High definition video Computer errors Hamming distance Hardware Computer networks Memory
Content Type	Text
Resource Type	Article

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