View in EDS

On the Optimum Design of L-Estimators for Phase Offset Estimation in IEEE 1588.

Saved in:
Bibliographic Details
Title: On the Optimum Design of L-Estimators for Phase Offset Estimation in IEEE 1588.
Authors: Guruswamy, Anand1, Blum, Rick S.1, Kishore, Shalinee1, Bordogna, Mark2
Source: IEEE Transactions on Communications. Dec2015, Vol. 63 Issue 12, p5101-5115. 15p.
Subjects: Data packeting, Network Time Protocol (Computer network protocol), Message passing (Computer science), End-to-end delay, Estimation theory
Abstract: In packet-based time synchronization protocols such as IEEE 1588, clock phase offsets are determined via two-way message exchanges between a master and a slave. Since the end-to-end delays in packet networks are inherently stochastic in nature, the recovery of phase offsets from message exchanges must be treated as a statistical estimation problem. Recently, minimax estimators for this problem were proposed by the authors, which are optimum in terms of minimizing the mean-squared estimation error over all values of the unknown parameters. In this paper, we consider a restricted class of estimators referred to as L-estimators, which are linear functions of order statistics. The problem of designing optimum L-estimators is studied under several hitherto unconsidered criteria of optimality. Our results address the case where the queuing delay distributions are fully known, as well as the case where network model uncertainty exists. Optimum L-estimators that utilize information from past observation windows to improve performance are also described. The derived L-estimators have a much lower computational complexity than minimax estimators, and also require lesser statistical knowledge of the queuing delays. Simulation results indicate that L-estimators exhibit a mean-squared estimation error very close to minimax estimators under many network scenarios. [ABSTRACT FROM AUTHOR]
Copyright of IEEE Transactions on Communications is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 115133674
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: On the Optimum Design of L-Estimators for Phase Offset Estimation in IEEE 1588.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Guruswamy%2C+Anand%22">Guruswamy, Anand</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Blum%2C+Rick+S%2E%22">Blum, Rick S.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Kishore%2C+Shalinee%22">Kishore, Shalinee</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Bordogna%2C+Mark%22">Bordogna, Mark</searchLink><relatesTo>2</relatesTo>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22IEEE+Transactions+on+Communications%22">IEEE Transactions on Communications</searchLink>. Dec2015, Vol. 63 Issue 12, p5101-5115. 15p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Data+packeting%22">Data packeting</searchLink><br /><searchLink fieldCode="DE" term="%22Network+Time+Protocol+%28Computer+network+protocol%29%22">Network Time Protocol (Computer network protocol)</searchLink><br /><searchLink fieldCode="DE" term="%22Message+passing+%28Computer+science%29%22">Message passing (Computer science)</searchLink><br /><searchLink fieldCode="DE" term="%22End-to-end+delay%22">End-to-end delay</searchLink><br /><searchLink fieldCode="DE" term="%22Estimation+theory%22">Estimation theory</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In packet-based time synchronization protocols such as IEEE 1588, clock phase offsets are determined via two-way message exchanges between a master and a slave. Since the end-to-end delays in packet networks are inherently stochastic in nature, the recovery of phase offsets from message exchanges must be treated as a statistical estimation problem. Recently, minimax estimators for this problem were proposed by the authors, which are optimum in terms of minimizing the mean-squared estimation error over all values of the unknown parameters. In this paper, we consider a restricted class of estimators referred to as L-estimators, which are linear functions of order statistics. The problem of designing optimum L-estimators is studied under several hitherto unconsidered criteria of optimality. Our results address the case where the queuing delay distributions are fully known, as well as the case where network model uncertainty exists. Optimum L-estimators that utilize information from past observation windows to improve performance are also described. The derived L-estimators have a much lower computational complexity than minimax estimators, and also require lesser statistical knowledge of the queuing delays. Simulation results indicate that L-estimators exhibit a mean-squared estimation error very close to minimax estimators under many network scenarios. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of IEEE Transactions on Communications is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=115133674
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1109/TCOMM.2015.2493534
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 15
        StartPage: 5101
    Subjects:
      – SubjectFull: Data packeting
        Type: general
      – SubjectFull: Network Time Protocol (Computer network protocol)
        Type: general
      – SubjectFull: Message passing (Computer science)
        Type: general
      – SubjectFull: End-to-end delay
        Type: general
      – SubjectFull: Estimation theory
        Type: general
    Titles:
      – TitleFull: On the Optimum Design of L-Estimators for Phase Offset Estimation in IEEE 1588.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Guruswamy, Anand
      – PersonEntity:
          Name:
            NameFull: Blum, Rick S.
      – PersonEntity:
          Name:
            NameFull: Kishore, Shalinee
      – PersonEntity:
          Name:
            NameFull: Bordogna, Mark
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 12
              Text: Dec2015
              Type: published
              Y: 2015
          Identifiers:
            – Type: issn-print
              Value: 00906778
          Numbering:
            – Type: volume
              Value: 63
            – Type: issue
              Value: 12
          Titles:
            – TitleFull: IEEE Transactions on Communications
              Type: main
ResultId 1