Implementation of Location System Based on GSM

This paper introduces the architecture of GSM location system and its implementation scheme. It describes the infrared communication interface protocol of this demo system, and brings forward the status transform diagram used by the protocol. It mainly analyses the theories and methods of the location algorithm used by the demo system, and builds its channel model. Meanwhile, it analyses the testing results in the micro-cellular condition. With this it shows that this scheme accomplishes the mobile telephone relative position calculating using wireless cellular system, and will more perfectly acquire the absolute position of the mobile phone, so eventually complete the location tracing.