Performance evaluations of a multiservice TDMA system

A simple model based on the queueing theory is proposed. Results such as throughput and blockage thresholds are established in an analytical manner through system parameters, capacity, debit, error rate, transmission time, and multiplexing. Representation of two error correction systems is possible through the model: one at the physical level, the other at the linkage level. Each of these systems is simulated in a dual fashion. This simulation process has made it possible to study the equivalency between different traffic classes, and system resources. In particular, functional zones with throughput optimization have been defined as a function of Forward Error Correcting (FEC), Eb/No, and the system's global capacity. For example, for a 50 Mbit/sec capacity system with 50 percent high-speed data, and a pre-coding error rate of 0.0001, a 3/4 FEC seems appropriate while a 7/8 FEC is sufficient for a 10 to the -6th CCITT recommendation.