Abstract:

The call admission control (CAC) is playing an important role in efficient utilization of the system resources.This paper proposes a new admission control algorithm for OFDMA system.We calculated the total transmit power of users combining the ant colony algorithm,and achieved call admission control by this power of user.The proposed algorithm can reduce the total transmission power of the system and increase the number of users,thus an efficient use of the resources.

Key words: OFDMA system;CAC;ant colony algorithm