View in EDS PDF Full Text

Erlang capacity analysis of hybrid FDMA/CDMA systems supporting multi-class services according to channel assignment methods.

Saved in:
Bibliographic Details
Title: Erlang capacity analysis of hybrid FDMA/CDMA systems supporting multi-class services according to channel assignment methods.
Authors: Insoo Koo1, Jeongrok Yang1, Aftab Ahmad2, Kiseon Kim1
Source: International Journal of Communication Systems. Dec2002, Vol. 15 Issue 10, p867-880. 14p. 2 Charts, 4 Graphs.
Subjects: ERLANG (Computer program language), Queuing theory, Markov processes, Performance evaluation, Communications industries
Abstract: In this paper, we focus on the evaluation of the Erlang capacity for hybrid FDMA/CDMA systems supporting multi-class services with two channel allocation schemes: independent carrier channel assignment (ICCA) and combined carrier channel assignment (CCCA). For the performance analysis, a multi-dimensional Markov chain model is developed. The effect of the number of carriers of hybrid FDMA/CDMA system on the Erlang capacity is observed, and the optimum values of the system parameters such as the number of channel elements (CEs) and the number of carriers are selected with respect to the Erlang capacity. As a numerical example, we consider an FDMA/CDMA system supporting voice/data services. We find out that, even though the benefit of CCCA scheme over ICCA scheme is negligible for small number of CEs, the scenario changes significantly when the number of CEs increases beyond a certain point. An improvement of as much as 74% can be achieved in the Erlang capacity when 5 carriers are employed. We also find the capacity knees for different number of carriers. The results of this paper could be helpful in the traffic engineering of FDMA/CDMA systems providing multi-class services. Copyright © 2002 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Communication Systems is the property of Wiley-Blackwell 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 Links:
  – Type: pdflink
Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 13439704
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Erlang capacity analysis of hybrid FDMA/CDMA systems supporting multi-class services according to channel assignment methods.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Insoo+Koo%22">Insoo Koo</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Jeongrok+Yang%22">Jeongrok Yang</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Aftab+Ahmad%22">Aftab Ahmad</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Kiseon+Kim%22">Kiseon Kim</searchLink><relatesTo>1</relatesTo>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Communication+Systems%22">International Journal of Communication Systems</searchLink>. Dec2002, Vol. 15 Issue 10, p867-880. 14p. 2 Charts, 4 Graphs.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22ERLANG+%28Computer+program+language%29%22">ERLANG (Computer program language)</searchLink><br /><searchLink fieldCode="DE" term="%22Queuing+theory%22">Queuing theory</searchLink><br /><searchLink fieldCode="DE" term="%22Markov+processes%22">Markov processes</searchLink><br /><searchLink fieldCode="DE" term="%22Performance+evaluation%22">Performance evaluation</searchLink><br /><searchLink fieldCode="DE" term="%22Communications+industries%22">Communications industries</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In this paper, we focus on the evaluation of the Erlang capacity for hybrid FDMA/CDMA systems supporting multi-class services with two channel allocation schemes: independent carrier channel assignment (ICCA) and combined carrier channel assignment (CCCA). For the performance analysis, a multi-dimensional Markov chain model is developed. The effect of the number of carriers of hybrid FDMA/CDMA system on the Erlang capacity is observed, and the optimum values of the system parameters such as the number of channel elements (CEs) and the number of carriers are selected with respect to the Erlang capacity. As a numerical example, we consider an FDMA/CDMA system supporting voice/data services. We find out that, even though the benefit of CCCA scheme over ICCA scheme is negligible for small number of CEs, the scenario changes significantly when the number of CEs increases beyond a certain point. An improvement of as much as 74% can be achieved in the Erlang capacity when 5 carriers are employed. We also find the capacity knees for different number of carriers. The results of this paper could be helpful in the traffic engineering of FDMA/CDMA systems providing multi-class services. Copyright © 2002 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Communication Systems is the property of Wiley-Blackwell 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=13439704
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1002/dac.569
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 14
        StartPage: 867
    Subjects:
      – SubjectFull: ERLANG (Computer program language)
        Type: general
      – SubjectFull: Queuing theory
        Type: general
      – SubjectFull: Markov processes
        Type: general
      – SubjectFull: Performance evaluation
        Type: general
      – SubjectFull: Communications industries
        Type: general
    Titles:
      – TitleFull: Erlang capacity analysis of hybrid FDMA/CDMA systems supporting multi-class services according to channel assignment methods.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Insoo Koo
      – PersonEntity:
          Name:
            NameFull: Jeongrok Yang
      – PersonEntity:
          Name:
            NameFull: Aftab Ahmad
      – PersonEntity:
          Name:
            NameFull: Kiseon Kim
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 12
              Text: Dec2002
              Type: published
              Y: 2002
          Identifiers:
            – Type: issn-print
              Value: 10745351
          Numbering:
            – Type: volume
              Value: 15
            – Type: issue
              Value: 10
          Titles:
            – TitleFull: International Journal of Communication Systems
              Type: main
ResultId 1