THE SYNCHRONIZATION OF TIME DIVISION MULTIPLE ACCESS SYSTEMS: AN ANALYTICAL AND EXPERIMENTAL STUDY.
OHIO STATE UNIV COLUMBUS ELECTROSCIENCE LAB
Pagination or Media Count:
A complete technology for synchronizing the transmissions in time division multiple access TDMA systems is presented. Up-link synchronizers are described which employ two coupled sampled-data delay-lock loops to provide the time base tracking functions. A sampled-data delay-lock loop is also used to provide down-link bit synchronization. Linearized models of the synchronizers are used to develop expressions relating the timing errors to signal and system parameters. Both deterministic errors due to clock frequency offsets and to relative satelliteterminal motion and random errors due to noise are investigated. The results apply to a relatively general network model, since few restrictive assumptions are employed in the analyses. An experimental synchronizer implemented to demonstrate concept feasibility and to check the accuracy of analytical results is described. The experimental results obtained by both bench and IDCSP satellite link testing are given. Based on these results, an assertion is made that the analytical results can be used with confidence in the design of operational TDMA systems. Author
- Non-Radio Communications