Wednesday, September 16, 2015
Comparison of Different Wireless Media
Features | Wireless Media Type | |||||
Infrared | Laser | Narrow-band Radio | Spread-spectrum Radio | Microwave | ||
| 1. | Cost | Cheapest | Similar to Infrared | More expensive, may need FCC license | More expensive | Very expensive |
| 2. | Installation | Easy, may require line of sight | Requires line of sight | Requires trained technicians and can involve tall radio towers | Requires trained technicians and can involve tall radio towers | Requires trained technicians and can involve satellite dishes |
| 3. | Distance | Under a kilometer | Can span several kilometers | Can span hundreds of kilometers | Can span hundreds of kilometers | Can span thousands of kilometers |
| 4. | Other issues | Can attenuate due to fog and rain | Can attenuate due to fog and rain | Lower-power devices can attenuate; can be eavesdropped upon; Can also attenuate due to fog, rain, and solar flares | Lower-power devices can attenuate; can also attenuate due to fog, rain, and solar flares | Can be eavesdropped upon; can also attenuate due to fog, rain, and solar flares |
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