Experimental characterization of 802.11n link quality at high rates

Konstantinos Pelechrinis, Theodoros Salonidis, Henrik Lundgren, Nitin Vaidya

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

802.11n has made a quantum leap over legacy 802.11 systems by supporting extremely higher transmission rates at the physical layer. In this paper, we ask whether such high rates translate to high qual- ity links in a real deployment. Our experimental investigation in an indoor wireless testbed reveals that the highest transmission rates advertised by the 802.11n standard typically produce losses (or even outages) even in interference-free environments. Such losses become more acute and persist at high SNR values, even at low interference intensity. We find that these problems are partly due to bad configurations that do not allow exploitation of spatial di- versity, partly due to the wider 802.11n channels that expose these sensitive high rates to more interference. We show that these prob- lems can be alleviated using the 802.11n MAC layer enhancements jointly with packet size adaptation.

Original languageEnglish (US)
Title of host publicationProc. of the 5th ACM International Workshop on Wireless Network Testbeds, Experimental Evaluation and Characterization, WiNTECH'10, Co-located with MobiCom'10 and 11th ACM Int. Symp. on MobiHoc'10
PublisherAssociation for Computing Machinery
Pages39-46
Number of pages8
ISBN (Print)9781450301404
DOIs
StatePublished - Jan 1 2010
Event5th ACM International Workshop on Wireless Network Testbeds, Experimental Evaluation and Characterization, WiNTECH '10 - Chicago, IL, United States
Duration: Sep 20 2010Sep 24 2010

Publication series

NameProceedings of the Annual International Conference on Mobile Computing and Networking, MOBICOM

Other

Other5th ACM International Workshop on Wireless Network Testbeds, Experimental Evaluation and Characterization, WiNTECH '10
CountryUnited States
CityChicago, IL
Period9/20/109/24/10

Keywords

  • 802.11n
  • MIMO
  • Packet delivery ratio

ASJC Scopus subject areas

  • Software
  • Hardware and Architecture
  • Computer Networks and Communications

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