TY - GEN
T1 - Experimental characterization of 802.11n link quality at high rates
AU - Pelechrinis, Konstantinos
AU - Salonidis, Theodoros
AU - Lundgren, Henrik
AU - Vaidya, Nitin
PY - 2010
Y1 - 2010
N2 - 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.
AB - 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.
KW - 802.11n
KW - MIMO
KW - Packet delivery ratio
UR - http://www.scopus.com/inward/record.url?scp=78649260610&partnerID=8YFLogxK
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U2 - 10.1145/1860079.1860087
DO - 10.1145/1860079.1860087
M3 - Conference contribution
AN - SCOPUS:78649260610
SN - 9781450301404
T3 - Proceedings of the Annual International Conference on Mobile Computing and Networking, MOBICOM
SP - 39
EP - 46
BT - Proc. 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
PB - Association for Computing Machinery
T2 - 5th ACM International Workshop on Wireless Network Testbeds, Experimental Evaluation and Characterization, WiNTECH '10
Y2 - 20 September 2010 through 24 September 2010
ER -