Research On The Terminal Technologies Of Mobile Station In Anti-destruction TDMA Mobile Communication System

In this paper, a new design of integrated service and anti-destruction terminal has been realized and the critical techniques in mobile station and multi-service access have been proposed based on the research of terminals in TDMA/TDD digital integrated service mobile communication system. The design of mobile station has been composed of time-division multi access terminal and service terminals, and the terminals include data terminal, voice terminal and image terminal. For the purpose of enhancing the performance of anti-destruction, the system was designed in the idea that the mobile and the base have absolutely same hardware, and can be distinguished by software. Thus, if the base was destroyed, each of the mobiles can act as base station, which ensures the system still can work normally. The mainly design of time-division multi access terminal and its multi services access is mainly focused on in this paper. In the design of the time-division terminal, Pc- 104 was adopted as the processor and CPLD devices was used as logic unit, that can enhance the system manage ability and extendable performance. At the same time, the time-division terminal achieves the function of managing channels dynamically according the type of services. The AMBE-l000 Vocoder chip is used to design the voice terminal, so the terminal has the advantages of low bit rate and high voice quality. The system analysis and test prove that the design achieves expected system requirement and the function of the system has been well performed. The remarkable characteristic of the TDMA/TDD mobile communication system designed in this paper is: multi-service access and anti-destruction were achieved, and the system was designed as small in size, light in weight and low in power supply.