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Low-power and error protection coding for network-on-chip traffic
KTH, School of Information and Communication Technology (ICT), Microelectronics and Information Technology, IMIT.
KTH, School of Information and Communication Technology (ICT), Microelectronics and Information Technology, IMIT.
KTH, School of Information and Communication Technology (ICT), Microelectronics and Information Technology, IMIT.
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2008 (English)In: IET Computers and Digital Techniques, ISSN 1751-8601, Vol. 2, no 6, 483-492 p.Article in journal (Refereed) Published
Abstract [en]

The power consumption of the network-on-chip communication backbone is explored and the effectiveness of low-power encoding and error protection techniques is analysed. For the switch under the study, a Nostrum defective routing switch, simulations and power analysis suggest that only a minor fraction of the power is dissipated in the logic blocks, whereas the major part is due to the interconnection wires. The authors have investigated a number of low-power and data protection mechanisms and studied their impact on power consumption of the whole network. The bus-invert encoding scheme and a limited set of Hamming data protection codes have been implemented on both data link and at the network layer. However, it turned out that all low-power data encoding schemes have little potential to decrease power consumption due to the significant overhead. On the other hand, error protection mechanisms have a significant potential to decrease power consumption because they allow to operate the network at a lower voltage. The authors' experiments show a 20% decrease of power consumption for a given error rate and for a given performance.

Place, publisher, year, edition, pages
2008. Vol. 2, no 6, 483-492 p.
National Category
Computer Science
Identifiers
URN: urn:nbn:se:kth:diva-18018DOI: 10.1049/iet-cdt:20050060ISI: 000261302500007Scopus ID: 2-s2.0-54949138429OAI: oai:DiVA.org:kth-18018DiVA: diva2:336063
Note

QC 20100525. QC 20120119

Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2016-12-13Bibliographically approved

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Jantsch, AxelLauter, RobertHaukilahti, RaimoNilsson, Erland
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