TY - GEN
T1 - Transmit antenna selection based on link-layer channel probing
AU - Cheng, Chen Mou
AU - Hsiao, Pai Hsiang
AU - Kung, H. T.
AU - Vlah, Dario
PY - 2007
Y1 - 2007
N2 - In this paper, we propose transmit antenna selection based on receiver feedback of channel information obtained via linklayer probing. Furthermore, we report the performance gain of the proposed antenna selection scheme in an experimental multi-antenna 802.11 network. We built a low-altitude Unmanned Aerial Vehicle (UAV) testbed using commodity dual-antenna 802.11 hardware and performed field experiments to collect traces of link performance using antennas of various types and orientations. Based on the collected traces, we demonstrate that transmit antenna selection can achieve a significant amount of gain using a link-layer channel probing protocol at a relatively low probing rate. The largest improvement we observed with joint transmit/receive antenna selection in 2×2 systems was 32%, about twice as much as that of receive-only antenna selection in 1×2 systems, which achieved 17%. Moreover, a similar improvement is obtained with probing intervals up to about 200 milliseconds, which is infrequently enough to consume only a small fraction of the available 802.11 channel capacity. Since these results require only a low implementation and operational cost, we conclude that transmit antenna selection is a worthwhile technique to use with the kind of multi-antenna mobile ad-hoc networks we examined.
AB - In this paper, we propose transmit antenna selection based on receiver feedback of channel information obtained via linklayer probing. Furthermore, we report the performance gain of the proposed antenna selection scheme in an experimental multi-antenna 802.11 network. We built a low-altitude Unmanned Aerial Vehicle (UAV) testbed using commodity dual-antenna 802.11 hardware and performed field experiments to collect traces of link performance using antennas of various types and orientations. Based on the collected traces, we demonstrate that transmit antenna selection can achieve a significant amount of gain using a link-layer channel probing protocol at a relatively low probing rate. The largest improvement we observed with joint transmit/receive antenna selection in 2×2 systems was 32%, about twice as much as that of receive-only antenna selection in 1×2 systems, which achieved 17%. Moreover, a similar improvement is obtained with probing intervals up to about 200 milliseconds, which is infrequently enough to consume only a small fraction of the available 802.11 channel capacity. Since these results require only a low implementation and operational cost, we conclude that transmit antenna selection is a worthwhile technique to use with the kind of multi-antenna mobile ad-hoc networks we examined.
UR - http://www.scopus.com/inward/record.url?scp=47749108665&partnerID=8YFLogxK
U2 - 10.1109/WOWMOM.2007.4351703
DO - 10.1109/WOWMOM.2007.4351703
M3 - 会议稿件
AN - SCOPUS:47749108665
SN - 1424409926
SN - 9781424409921
T3 - 2007 IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks, WOWMOM
BT - 2007 IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks, WOWMOM
T2 - 2007 IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks, WOWMOM
Y2 - 18 June 2007 through 21 June 2007
ER -