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Propagation Measurements of Various Directional Beam in Subway funnel Environments for IEEE 802.11 Wireless LAN  

박노준 (원광대학교 대학원 전자공학과)
송문규 (원광대학교 공과대학 전기전자 및 정보공학)
강영진 (원광대학교 공과대학 전기전자 및 정보공학부)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.8, no.2, 2004 , pp. 232-238 More about this Journal
Abstract
In this paper, radio propagation in a subway tunnel is investigated using fan beam antennas, circular polarization antennas and directional antennas at 2.4㎓ and 5.8㎓ band, respectively. The results of narrowband channel measurements show that received power level for NLOS(Non-Line-Of-Sight) path is decreased drastically as compared with LOS(Line-Of-Sight) path. Wideband channel measurements are obtained using a PN sliding correlation method. The parameters of the channel such as mean access delay and RMS delay spread are compared as to different types of directional beam at IEEE 802.11 WLAN(Wireless Local Area Network) band including 2.4㎓ and 5.8㎓ bands, respectively.
Keywords
Wireless LAN; Tunnel; PN sliding correlation; Propagation Measurements;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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