Analysis Of The Wireless Transmission System
Wireless transmission system based on free space, ionospheric or tropospheric nonuniform air mass media transmission system, transmission quality, unstable and vulnerable to interference, must take measures to resist fading and frequency management and coordination between systems. The system eliminates the physical transmission medium, low cost, fast construction, scheduling flexibility and can be directional or omnidirectional broadcast traffic. When using c-band frequency satellite communications system, not the ionospheric effects, rain-free area in constant channel of the transmission quality can be regarded as stable. Wireless transmission system development process consists of small capacity short wave, VHF relay communication, as well as large-capacity microwave radio relay and satellite communications systems.