Abstract:

An approach for calculating the multiservices access capacities of uplink time division duplexing－coding division multiple access (TDD－CDMA) system is proposed. The relationship between service access capacities and TDD－CDMA interference is analyzed. And the specialty of TDD－CDMA interference distribution is also considered. By using Delbrouck’s algorithm, the call congestion, traffic congestion, time congestion and carried traffic of different services in a multi－dimensional loss TDD－CDMA system can be resolved. Both analysis and simulation results are given to support the method mentioned above.

Key words: time division duplexing－coding division multiple access, multi－service, access capacities