摘要
首先分析了TD-SCDMA系统的性能,表明其接收性能与同一时隙码分用户的空间分布有关。针对TD-SCDMA系统的这一特点,提出了一种对原有动态信道分配(DCA)方法的改进方法。传统的DCA是以使相邻小区干扰最小为准则,达到提高系统性能的目的。改进的方法除了考虑相邻小区的信道分配外,还要对本小区内用户空间分布进行考虑。链路仿真结果表明,这种方法可以明显提高系统性能。
Dynamic channel allocation(DCA) is generally for reducing intercell interference. In this paper, a improved method of DCA is proposed. In TD-SCDMA, method combined joint detection and smart antenna is applied. Arithmetic analysis show: its performance is influenced by user spatial separation. So user spatial separation in the same cell is considered in the new DCA. Simulation results show: system performance is improved by this method.
出处
《通信技术》
2003年第5期50-51,54,共3页
Communications Technology
