COFDM is a very advanced technology in the field of wireless transmission. Its main function is to rapidly and stably transmit high-definition audio and video signals in a blocked mobile environment. Its biggest advantage is that it supports the application of breaking through the limit of visual distance. Therefore, it is widely used in the field of modern wireless transmission. But while COFDM is so powerful, there are a number of factors that affect the practical application of COFDM, which we will look at below

1、Antenna gain

In the application of COFDM mobile wireless video transmission equipment, when the transmitter adopts high-gain directional antenna, the power density (field intensity) in the communication direction can be significantly improved; when the receiver adopts high-gain directional antenna, the signal/noise ratio can be significantly improved, and the receiving field intensity can be increased, thus greatly improving the communication distance.

2、Obstruction

COFDM mobile wireless video transmission equipment has the ability of diffraction, but the diffraction will cause the weakening of the transmission signal, so when the blockage is more dense, the transmission distance of the equipment will be closer

3、Equipment power

Generally speaking, under certain transmission environment and conditions, the larger the power of COFDM mobile wireless video transmission equipment, the longer the transmission distance.

4、Same frequency electromagnetic signal interference

Although COFDM mobile wireless video transmission equipment has a very strong anti-interference ability, its transmission distance will be affected by the signal interference of the same frequency.

5、Altitude 

Due to the radian of the earth, there will be a certain drop between the transmitting end and the receiving end of the equipment as the distance increases. Therefore, in the long-distance transmission process to adjust the corresponding position according to the altitude.