The wireless TV signal receiving system of high-speed rail

The existing informationization of rail transit is insufficient in digital TV research. Due to the large viewing terminal, it is not able to used for watching cable TV on the high-speed rail. In view of the fact that mobile TV currently has a single viewing channel and requires the support of digital multimedia broadcasting (DMB), a wireless television signal receiving system is designed to watch television programs in the high-speed trains. The mobile receiving terminal consists of a high frequency head, a tuning station, a liquid crystal displayer and a battery pack. And it is used for receiving the television program transmitted by the host, issuing a switching radio command to the host to realize receiving and displaying the high speed wireless television signal. The overall scheme of the system is described, and the scheme of hardware design is completed in the paper. The software system is designed by the method of modular design. The experimental results show that the high-speed rail TV wireless terminal system has stable performance and good display. At the same time, the system has the characteristics of smaller size, low power consumption and simple structure. It will have more useful value and promotion prospect in the field of high-speed mobile video terminals.