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Performance Comparison of Loading Algorithms for 80 MHz IEEE 802.11 WLANs
KTH, School of Electrical Engineering (EES), Communication Theory.ORCID iD: 0000-0001-6682-6559
2011 (English)In: 73rd Vehicular Technology Conference (VTC Spring), 2011 IEEE, IEEE conference proceedings, 2011, 1-5 p.Conference paper (Refereed)
Abstract [en]

Wireless local area networks are known to apply the same transmit power and modulation type over all employed OFDM subcarriers. Recent studies show that this can lead to significant performance degradations. As future WLANs will employ even larger bandwidths 80 MHz and above -we study in this paper loading strategies to improve the system performance. In particular, we study the performance of adaptive modulation, power loading and bit loading not only from the physical layer point of view but also by accounting for necessary protocol extensions to accommodate the required control overhead. Our studies reveal that, indeed, loading algorithms can provide significant performance improvements especially for 80 MHz systems. However, the selection of the most appropriate approach depends on channel, protocol and traffic parameters. Hence, this choice is not straightforward and has a substantial impact on the overall system's performance.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2011. 1-5 p.
National Category
Communication Systems Telecommunications
URN: urn:nbn:se:kth:diva-136824DOI: 10.1109/VETECS.2011.5956136ScopusID: 2-s2.0-80051987721OAI: diva2:677260
IEEE Vehicular Technology Conference 2011 (VTC Spring 2011)15-18 May 2011 , Budapest

QC 20131219

Available from: 2013-12-09 Created: 2013-12-09 Last updated: 2013-12-19Bibliographically approved

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