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Performance of OFDM Systems with Time-Limited Waveforms over Multipath Radio Channels
KTH, Tidigare Institutioner, Signaler, sensorer och system.ORCID-id: 0000-0001-9697-9978
1998 (Engelska)Ingår i: Global Telecommunications Conference, 1998. GLOBECOM 98. The Bridge to Global Integration. IEEE, New York: IEEE , 1998, s. 962-967Konferensbidrag, Publicerat paper (Refereegranskat)
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.

Ort, förlag, år, upplaga, sidor
New York: IEEE , 1998. s. 962-967
Nationell ämneskategori
Data- och informationsvetenskap
Forskningsämne
SRA - Informations- och kommunikationsteknik
Identifikatorer
URN: urn:nbn:se:kth:diva-28131DOI: 10.1109/GLOCOM.1998.776872ISBN: 0-7803-4984-9 (tryckt)OAI: oai:DiVA.org:kth-28131DiVA, id: diva2:383995
Konferens
IEEE GLOBECOM 1998 - The Bridge to the Global Integration; Sydney, NSW, Aust; 8 November 1998 through 12 November 1998
Anmärkning
QC 20110111Tillgänglig från: 2011-01-06 Skapad: 2011-01-06 Senast uppdaterad: 2018-01-12Bibliografiskt granskad

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