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Impact of Doppler spread and adaptive modulation on TCP throughput in Rayleigh fading channels
Georgia Tech.
ABB Corporate Research.
NokiaSiemens Networks.
2010 (English)In: AEU - International Journal of Electronics and Communications, ISSN 1434-8411, E-ISSN 1618-0399, Vol. 64, no 11, 1082-1089 p.Article in journal (Refereed) Published
Abstract [en]

A number of wireless systems have recently adopted adaptive modulation (AM) schemes to improve its efficiency. In this letter, our aim is to study the impact Doppler spread and adaptive modulation has on transmission control protocol (TCP) throughput in Rayleigh fading channels. We consider a finite state Markov channel (FSMC) model, which is a useful model for analyzing radio channel with nonindependent fading. Furthermore, we use a Markov model for TCP evolution and evaluate the TCP performance by computer simulations. In our simulations we have compared the TCP Reno scheme with TCP Tahoe scheme. The results indicate that a large Doppler spread leads to lower TCP throughput due to more frequent transitions of channel states and modulation schemes which make it difficult for the TCP congestion control mechanism to accommodate the dynamic link characteristics.

Place, publisher, year, edition, pages
2010. Vol. 64, no 11, 1082-1089 p.
National Category
Computer Engineering
Identifiers
URN: urn:nbn:se:miun:diva-24282DOI: 10.1016/j.aeue.2009.12.004OAI: oai:DiVA.org:miun-24282DiVA: diva2:785877
Available from: 2015-02-04 Created: 2015-02-04 Last updated: 2015-02-11Bibliographically approved

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Gidlund, Mikael
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CiteExportLink to record
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Citation style
  • apa
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