TY - JOUR
T1 - Analysis of the optimum configuration of roadside units and onboard units in dedicated short-range communication systems
AU - Shieh, Wern Yarng
AU - Lee, Wei Hsun
AU - Tung, Shen Lung
AU - Jeng, Bor Shenn
AU - Liu, Cheng Hsin
N1 - Funding Information:
Manuscript received May 10, 2004; revised September 15, 2004, June 7, 2005, January 10, 2006, and June 22, 2006. This work was supported by the Project of Intelligent Transportation Systems at the Research Institute of ChungHwa Telecom (former ChungHwa Telecommunication Laboratories). The Associate Editor for this paper was C. K. Toh.
PY - 2006/12
Y1 - 2006/12
N2 - With the aid of a simple relation, which is analogous to the radar equation, the uplink signal strength received by the receiving module of a roadside unit (RSU) and emitted from the radiation module of an onboard unit (OBU) can be described. Setting the scale of this relation arbitrarily and determining the signal strength threshold from experimental measurements, and combined with the simulation of the radiation and the receiving pattern by cosinen function, the relative signal strength emitted from the OBU and received by the RSU can be calculated successfully. From this computed relative signal strength and the threshold, the influence of the RSU and OBU mounting parameters, such as the mounting angles and mounting height, on the available communication region is analyzed. The effect of windshield fading is also considered. With the help of the analysis results, an optimum RSU and OBU mounting configuration can be easily obtained. This method can be used conveniently and successfully for very short wavelengths. This includes visible light, infrared, and even submillimeter-wave ranges. For millimeter-wave and microwave systems, this method can, in some cases, also provide a rudimentary estimation.
AB - With the aid of a simple relation, which is analogous to the radar equation, the uplink signal strength received by the receiving module of a roadside unit (RSU) and emitted from the radiation module of an onboard unit (OBU) can be described. Setting the scale of this relation arbitrarily and determining the signal strength threshold from experimental measurements, and combined with the simulation of the radiation and the receiving pattern by cosinen function, the relative signal strength emitted from the OBU and received by the RSU can be calculated successfully. From this computed relative signal strength and the threshold, the influence of the RSU and OBU mounting parameters, such as the mounting angles and mounting height, on the available communication region is analyzed. The effect of windshield fading is also considered. With the help of the analysis results, an optimum RSU and OBU mounting configuration can be easily obtained. This method can be used conveniently and successfully for very short wavelengths. This includes visible light, infrared, and even submillimeter-wave ranges. For millimeter-wave and microwave systems, this method can, in some cases, also provide a rudimentary estimation.
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U2 - 10.1109/TITS.2006.884888
DO - 10.1109/TITS.2006.884888
M3 - Article
AN - SCOPUS:33845549346
SN - 1524-9050
VL - 7
SP - 565
EP - 571
JO - IEEE Transactions on Intelligent Transportation Systems
JF - IEEE Transactions on Intelligent Transportation Systems
IS - 4
ER -