This paper introduces a new kind of EEG Telemetry and Tele\|Monitoring system, which uses TDM technology to transmit multi\|leads of EEG signals to the Monitoring Center through public telephone networks; the sender of system also sends the codes representing the methods of EEG potential evocation synchronously, which supplies the guidance for analysis in Monitoring Center.

The time division multiplexing technique and its application of the soft start and the converter;

Then the key technologies of air interface are put forward,including the direct sequence spread spectrum,full-duplex, time-division multiple access, code-division multiple access, error control, mobility management and data communication protocol.

In the paper, firstly introduce the near-far effect of the pseudolites and traditional solutions, then mainly analysis the TDMA technology and redesign the signal of the Pseudolites.

In the paper,firstly introduce the near-far effect of the pseudolites and traditional solutions,then mainly analyse the TDMA technology and redesign the signal of the pseudolites.