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TDD-CDMA系统由于上下行业务量的不对称,因此会产生严重的小区间干扰,需要使用动态信道分配算法(DCA)来适应上下行业务量的动态不平衡。文中提出了一种基于平均功率值的DCA算法。它通过采用平均功率控制的算法对功率进行处理,以提高信道利用率;并避免基站间的相互干扰来改善系统性能,从而提高系统容量。仿真结果表明,提出的算法能够显著地改善系统指标,达到优化效果。
Due to the asymmetric uplink and downlink traffic, TDD-CDMA system may cause serious inter-cell interference and use dynamic channel allocation algorithm (DCA) to adapt to the dynamic imbalance between uplink and downlink traffic. In this paper, a DCA algorithm based on average power value is proposed. It uses the average power control algorithm to process the power to improve channel utilization; and to avoid mutual interference between base stations to improve system performance, thereby increasing system capacity. The simulation results show that the proposed algorithm can significantly improve the system index and achieve the optimized result.