For example, after the broadcast is launched by the tower, the broadcast can be received in a large area. This power is definitely not small. If the TV worker is exposed to the transmitting equipment, the physical damage is very great. The equipment of various operators is the same. , They increase the power of the base station or tower, all in order to transmit farther.
Bandwidth bandwidth voice is generally about 3K, because ordinary people speak 3K is enough, if it can be compressed, then a few hundred K is enough, so the voice transmission bandwidth is very small. Nowadays, the bandwidth of UAVs starts with M, which is much more challenging for long-distance transmission.
The transmission interval depends on the flexibility. According to Shannon’s formula, if the bandwidth increases ten times, the flexibility drops ten times, so bandwidth is very precious for wireless transmission. The characteristics of image transmission Compared with ordinary communication number transmission, the characteristics of image transmission are quite clear: the characteristic of image transmission is that the amount of data is too large.
TXT and other files usually start at a few K, and the amount of image data is much larger, for example, it takes a few megabytes to take a photo at will on the iPhone, so the bandwidth required is very high. The image transmission cannot be delayed. Just like everyone watching a movie, it can’t be tolerated if there is a lag. In addition, when we watch a movie, the high-definition image is very cool, and the ambiguity can’t stand the balance of interval and power consumption.
Post time: Sep-04-2020