@article{(Open Science Index):https://publications.waset.org/pdf/9998695,
	  title     = {Design of Regular Communication Area for Infrared Electronic-Toll-Collection Systems},
	  author    = {Wern-Yarng Shieh and  Chao Qian and  Bingnan Pei},
	  country	= {},
	  institution	= {},
	  abstract     = {A design of communication area for infrared
electronic-toll-collection systems to provide an extended
communication interval in the vehicle traveling direction and
regular boundary between contiguous traffic lanes is proposed.
By utilizing two typical low-cost commercial infrared LEDs with
different half-intensity angles Φ1/2 = 22◦ and 10◦, the radiation
pattern of the emitter is designed to properly adjust the spatial
distribution of the signal power. The aforementioned purpose
can be achieved with an LED array in a three-piece structure
with appropriate mounting angles. With this emitter, the influence
of the mounting parameters, including the mounting height and
mounting angles of the on-board unit and road-side unit, on the
system performance in terms of the received signal strength and
communication area are investigated. The results reveal that, for
our emitter proposed in this paper, the ideal ”long-and-narrow”
characteristic of the communication area is very little affected by
these mounting parameters. An optimum mounting configuration is
also suggested.
},
	    journal   = {International Journal of Electronics and Communication Engineering},
	  volume    = {8},
	  number    = {7},
	  year      = {2014},
	  pages     = {1118 - 1123},
	  ee        = {https://publications.waset.org/pdf/9998695},
	  url   	= {https://publications.waset.org/vol/91},
	  bibsource = {https://publications.waset.org/},
	  issn  	= {eISSN: 1307-6892},
	  publisher = {World Academy of Science, Engineering and Technology},
	  index 	= {Open Science Index 91, 2014},
	}