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Dynamic Single-User OFDM Adaptation for IEEE 802.11 Systems
KTH, School of Electrical Engineering (EES), Communication Theory.ORCID iD: 0000-0001-6682-6559
2007 (English)In: Proceedings of ACM/IEEE International Symposium on Modeling, Analysis and Simulation of Wireless and Mobile Systems 2007 (MSWIM 2007), 2007Conference paper, Published paper (Refereed)
Abstract [en]

Earlier paper have demonstrated that the achievable throughput of OFDM systems can benefit significantly from individual modulation/transmit power selection on a per sub-carrier basis according to the actual gain of individual sub-carriers (so called dynamic OFDM scheme). Usage of such approach requires, however, providing support for additional functionality like: acquisition of the subcarrier gains, signaling of the used modulation types between the sender and receiver, etc. Therefore dynamic OFDM is actively pursued for future radio interfaces, rather then considered as extension of existing OFDM based standards. In this paper we present for the first time a proposal how the widely accepted IEEE 802.11a/g systems might be extended to support the dynamic OFDM in a singleuser (point-to-point) setting while assuring backward compatibility. We address these issues by a) presenting a set of protocol modifications; and b) a performance evaluation of the suggested extension (referred further on to as single-user 802.11 DYN mode) demonstrating the potential of performance improvement.

Place, publisher, year, edition, pages
2007.
National Category
Communication Systems Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-136791DOI: 10.1145/1298126.1298149OAI: oai:DiVA.org:kth-136791DiVA: diva2:677189
Conference
ACM/IEEE International Symposium on Modeling, Analysis and Simulation of Wireless and Mobile Systems 2007 (MSWIM 2007)
Note

QC 20140103

Available from: 2013-12-09 Created: 2013-12-09 Last updated: 2014-01-03Bibliographically approved

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fulltext(280 kB)160 downloads
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Gross, James

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CiteExportLink to record
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  • apa
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