The wireless transmission distance is mainly determined by the power of the transmitter and the sensitivity of the receiver. Directly increasing the transmission power or receiving sensitivity can increase the use distance and signal quality, but the user cannot change the specifications of the two after leaving the factory, especially In addition to the limitation of radio wave regulations, the lack of mutual interference between multi-channel signals will be more serious. The power consumption of the product will increase, and the using time will be greatly shortened. Of course, this is not the best policy.
The additional way is to improve receiver sensitivity. In theory, when the sensitivity is increased by 6dB, the receiving distance can be doubled, but in fact, it is not easy for the user to change the original sensitivity of the receiver arbitrarily. Because in actual application, the transmitted signal is received through the antenna of the receiver, so the only way for users to improve the overall system transmission effect is to improve the characteristics and installation of the receiving antenna!