Development of data transmission system utilizing digital mobile radio

摘要

Since the introduction of a digital mobile radio system in 2001 we have advanced the full-scale adoption of the system. The digital mobile radio system has been improved in the convenience of speech communication; for example, the system can be connected to the in-house telephone network for security. For the data transmission feature, which is not supported at present, we expect that it will be applied to a new service support system utilizing mobile radio when the feature is implemented. For this purpose, we have developed a data transmission system utilizing digital mobile radio and verified the function of the system in fields. The general description of the development and verification of the data transmission system is given below.