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An analysis of out-of-band emission and in-band interference for precoded and classical OFDM systems
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.ORCID iD: 0000-0002-9225-8150
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.ORCID iD: 0000-0003-0413-4826
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.ORCID iD: 0000-0001-8647-436X
2015 (English)In: European Wireless 2015: 21th European Wireless Conference, 20-22 May 2015, Budapest, Hungary, Piscataway, NJ: IEEE Communications Society, 2015, article id 7147703Conference paper, Published paper (Refereed)
Abstract [en]

In this paper we present analytical expressions for the out-of-band (OOB) emission and in-band interference of two different OOB suppressed OFDM-systems; classical low-pass filtered and precoded. Then, we analytically compare their performance in terms of OOB emission suppression and introduced level of in-band interference. We analyse the fact that the in-band interference introduced by the filter depends on the length of the cyclic prefix as well as the behavior of the channel while that of the precoded OFDM does not. The analysis confirms that edged subcarriers suffer higher in-band interference than central subcarriers. Moreover, frequency precoders, for a specific choice of notching frequencies, can outperform time precoders.

Place, publisher, year, edition, pages
Piscataway, NJ: IEEE Communications Society, 2015. article id 7147703
National Category
Signal Processing
Research subject
Signal Processing
Identifiers
URN: urn:nbn:se:ltu:diva-34467Local ID: 8ad284fe-4be4-4f35-b93d-3e81a90f5fb2ISBN: 978-3-8007-3976-9 (electronic)OAI: oai:DiVA.org:ltu-34467DiVA, id: diva2:1007718
Conference
European Wireless : 20/05/2015 - 22/05/2015
Note
Godkänd; 2015; 20150703 (jaavan)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-12-08Bibliographically approved

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