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ENC3250 Solutions pg 60

ENC3250 Solutions pg 60 - 13.4 A Kiviat graph provides a...

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-60- 13.4 A Kiviat graph provides a pictorial means of comparing systems along multiple variables. The variables are laid out at equal angular intervals. A given system is defined by one point on each variable; these points are connected to yield a shape that is characteristic of that system. 13.5 (1) The spectrum for infrared is virtually unlimited, which presents the possibility of achieving extremely high data rates. (2) The infrared spectrum is unregulated worldwide, which is not true of some portions of the microwave spectrum. (3) Infrared light is diffusely reflected by light-colored objects; thus it is possible to use ceiling reflection to achieve coverage of an entire room. (4) Infrared light does not penetrate walls or other opaque objects. This has two advantages: First, infrared communications can be more easily secured against eavesdropping than microwave; and second, a separate infrared installation can be operated in every room in a building without interference, enabling the construction of very large infrared LANs.
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  • Fall '11
  • Dr.TimothyCerner
  • Infrared light, Electromagnetic spectrum, wireless devices, separate infrared installation, intense infrared background

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