ABSTRACT
Wireless communication can provide many advantages over traditional wired network systems. Some of the main advantages of wireless communication are ease of use and flexibility, short amount of time to implement, optimized inventory control, and substantial cost savings. The wireless technologies employ different segments of the electromagnetic spectrum, including radio frequencies, microwave, infrared, and visible electromagnetic radiation. The chapter outlines the principles that offer exciting opportunities for infrared data communication systems. Wireless infrared communication using an infrared light-emitting diode is pulsed at a low duty cycle and a high current to provide the transmitting energy. Longer-distance transmission utilizes a focusing lens but requires more precise alignment between the transmitter and the receiver. Applications would include situations where high-speed point-to-point communications would require gaining legal access and right of way, such as in high-density urban areas or in cases where the communication link is needed on a temporary basis.
