Wireless transmission and wired transmission have the following differences:
1. Wiring
Wireless transmission requires no wiring at all.
Wired transmission wiring is cumbersome and requires a lot of manpower and material resources.
2. Scalability
Wireless transmission scalability is strong, only need to add a microwave transmitter and receiver to complete.
The scalability of wired transmission is weak. For some reasons, the ports reserved for the original wiring are not enough, and the addition of new users will encounter the trouble of rearranging cables and long construction period.
3. Attenuation
Wireless transmission has no attenuation, but if the equipment has aging phenomenon, only need to replace the aging equipment without a full replacement.
For some reasons, the original cable attenuation phenomenon can not be replaced or difficult to replace the cable, the new wiring or replacement work is cumbersome, the need for a lot of manpower and material resources.
4. Difficulty of construction
The construction difficulty of wireless transmission is low, many unknown factors are eliminated, manpower and material resources are less, and the project completion quality is high.
The construction difficulty of wired transmission is high, the buried cable needs to be dug and laid, the wiring should be threaded, and the problems of crossing the wall and many unknown factors (such as power failure, water) greatly increase the difficulty of construction.
Wired is to see the transmission media ah, common optical cable, cable!
It's wireless, I understand. It's like electromagnetic waves
Can own access, without access to install the trouble!
Now the wireless communication is very hot, is it not said that the cable has no future? (1) The cable communication is the guided transmission media (information flow along the solid media), and the wireless communication is the non-guided transmission media (in the free space is propagated).
(2) From the perspective of capacity, the wired is always unlimited, and the wireless is always limited.
(3) In terms of transmission quality, the quality of wired communication is better