Week 2 Forum ISSC 343 - intensity from bright to dim to...

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There are two types of wireless transmission, Infrared Light and Radio Waves which can transmit two different signals, analog and digital. Analog signals are continuously on and the strength of the wave is always changing. Digital signals are sent out in little bursts, for example similar to Morse code. Infrared Light transmissions send messages using binary code. “Sending a 1 in binary code could result in a light quickly flashing on; sending a 0 could result in the light remaining off.” (Olenewa, 2013 pg. 55). Infrared light is invisible to the human eye, which is one reason why it is used. If a normal light was used any light in the city that flashes within view of the receiver could be interpreted as the sending light and can receive wrong data. Just like any light, to be viewed, must be in direct view of the receiving unit. “Yet, it is a much better medium for data transmission because it is less susceptible to interference from other sources of visible light.” (Olenewa, 2013 pg. 55). For analog signals, the light would just change
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Unformatted text preview: intensity from bright to dim to transmit data. ´or digital signals, the light would just ³ash on and oF to transmit data. “Radio waves provide the most common and eFec±ve means of wireless communica±ons today.” (Olenewa, 2013 pg. 57). The obvious device that uses radio waves to send signals is the radio. Most wireless transmission involves radio waves, as it can be picked up through rooms and buildings, as long as it’s not in a steel room deep underground. “Radio waves can also penetrate most solid objects (with the excep±on of metallic ones), whereas light waves cannot penetrate anything opaque or solid.” (Olenewa, 2013 pg. 58). References: Olenewa, J. (01/2013). Guide to Wireless Communica±ons, 3e, 3rd Edi±on. [VitalSource Bookshelf Online]. Retrieved from h²p://bookshelf.vitalsource.com/#/books/9781285700267/...
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