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Call admission control (CAC) is one of the most important issues for radio resource management of wireless communication systems, which has been widely investigated. However, the computational complexity of the CAC algorithm is still a stringent concern. The performance of interleave-division multiple-access (IDMA) system can be assessed by tracking signal-to-interference-plus-noise ratio (SINR) evolution of the iterative chip-by-chip (CBC) detection process. Based on this semi-analytical technique, a novel CAC algorithm, which makes resource estimation in advance by using the solution obtained from SINR evolution, is proposed to give a simple solution without compromising performance for CAC algorithm in IDMA systems. Besides, the effect of the base station multiuser detection (MUD) on the CAC algorithm is evaluated. It is shown that with the high efficiency of CBC MUD, a high throughput and a low blocking and dropping probability for multimedia users can be expected.

Call admission control algorithm for IDMA system based on SINR evolution