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Performance of OFDM Systems with Time-Limited Waveforms over Multipath Radio Channels
KTH, Superseded Departments, Signals, Sensors and Systems.ORCID iD: 0000-0001-9697-9978
1998 (English)In: Global Telecommunications Conference, 1998. GLOBECOM 98. The Bridge to Global Integration. IEEE, New York: IEEE , 1998, 962-967 p.Conference paper, Published paper (Refereed)
Abstract [en]

Pulse shaping can effectively reduce the sensitivity of orthogonal frequency division multiplexing (OFDM) scheme to frequency and time variations but at the same time introduce correlation between subcarriers that destroys the orthogonality of the system. This correlation is however well defined and can be effectively used at the receiver in the detection process. This paper investigates the performance of OFDM systems when using time-limited waveforms over multipath radio channels. For pulse shaping of the same duration as the OFDM block interval, the memory between the subcarriers can be fully utilized by means of a maximum likelihood sequence estimation (MLSE) detector. It is shown that with such a detector, pulse shaping improve the performance of OFDM systems in multipath radio channels. The obtained results also show the advantage of employing pulse shaping with OFDM systems in the presence of long echoes.

Place, publisher, year, edition, pages
New York: IEEE , 1998. 962-967 p.
National Category
Computer and Information Science
Research subject
SRA - ICT
Identifiers
URN: urn:nbn:se:kth:diva-28131DOI: 10.1109/GLOCOM.1998.776872ISBN: 0-7803-4984-9 (print)OAI: oai:DiVA.org:kth-28131DiVA: diva2:383995
Conference
IEEE GLOBECOM 1998 - The Bridge to the Global Integration; Sydney, NSW, Aust; 8 November 1998 through 12 November 1998
Note
QC 20110111Available from: 2011-01-06 Created: 2011-01-06 Last updated: 2011-11-29Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
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  • de-DE
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  • fi-FI
  • nn-NO
  • nn-NB
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  • Other locale
More languages
Output format
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  • asciidoc
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