TY - JOUR
T1 - Indoor Propagation Measurements at Infrared Frequencies for Wireless Local Area Networks Applications
AU - Hashemi, Homayoun
AU - Behbaheni, Farbod
AU - Yun, Gang
AU - Kavehrad, Mohsen
AU - Galko, Peter A.
N1 - Funding Information:
Manuscript received August 13, 1993; revised November 8, 1993. This project was funded by the Imax Corporation and the Canadian Institute for Telecommunications Research under the NCE program of the Government of Canada. H. Hashemi and F. Behbahani are with the Department of Electrical Engineering, Sharif University of Technology, Teheran, Iran. G. Yun, M. Kavehrad and P. A. Galko are with the Department of Electrical Engineering, University of Ottawa, Ottawa, Ontario, Canada, K1N 6N5. IEEE Log Number 9403014.
PY - 1994/8
Y1 - 1994/8
N2 - In a combination tutorial and research paper, prop-agation aspects of transmission at infrared (IR) frequencies for wireless in-building communications are explored. The tutorial section of the paper presents basic principles of propagation at IR, a comparison with indoor radio propagation, and the derivation of the channel's baseband model. The research aspect of the paper reports on the results of recent frequency response measurements at eight different sites in a university building. A major result shows that the indoor wireless optical channel is very dynamic, with great variations in the channel's characteristics for data collected in different rooms, in different locations within the same room, and for different orientations of the optical receiver at the same location of the same room. Numerical values of the channel's relative path loss and 3 dB bandwidth, along with frequency response plots covering a wide range of conditions, are presented and discussed. Finally, on the basis of the results of measurements, schemes for improving the performance of future wireless in building optical transceivers are proposed.
AB - In a combination tutorial and research paper, prop-agation aspects of transmission at infrared (IR) frequencies for wireless in-building communications are explored. The tutorial section of the paper presents basic principles of propagation at IR, a comparison with indoor radio propagation, and the derivation of the channel's baseband model. The research aspect of the paper reports on the results of recent frequency response measurements at eight different sites in a university building. A major result shows that the indoor wireless optical channel is very dynamic, with great variations in the channel's characteristics for data collected in different rooms, in different locations within the same room, and for different orientations of the optical receiver at the same location of the same room. Numerical values of the channel's relative path loss and 3 dB bandwidth, along with frequency response plots covering a wide range of conditions, are presented and discussed. Finally, on the basis of the results of measurements, schemes for improving the performance of future wireless in building optical transceivers are proposed.
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U2 - 10.1109/25.312790
DO - 10.1109/25.312790
M3 - Article
AN - SCOPUS:0028493649
SN - 0018-9545
VL - 43
SP - 562
EP - 576
JO - IEEE Transactions on Vehicular Technology
JF - IEEE Transactions on Vehicular Technology
IS - 3
ER -