Transmission Means
Wireless network of failing have two kinds of radio waves and infrared rays ways.
The transmission ray transmission means is influenced by distance very big.
The application of radiowave transmission means is much more extensive.
Modulation Way Of The Radiowave
Expand the spectral way.The frequency spectrum of the signal of the data is and then transmitted out after being expanded into several times even dozens of times.
Modulate the way in narrowband.The signal of the data is transmitted out directly in case of not making any expansion
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment