摘要
TD-SCDMA系统作为TDD-CDMA系统的代表,与FDD-CDMA相比,它在物理层采用了智能天线、多用户检测、上行同步以及特殊的帧结构等。在分析TD-SCDMA系统帧结构的基础上,提出了一种改进的动态信道分配方案以及考虑空间分布信息的信道分配算法,通过增大交叉时隙的空间隔离度和减少交叉时隙的使用机率来改善基站间的相互干扰,同时使每个时隙的用户空间分布更加均匀,能够有效增加系统容量,改善系统性能。
The TO SCDMA system, as the representative of the TDD CDMA system compared with the FDD CDMA, it adopt the smart antenna in the physical, multi user detection, uplink synchronization, and special frame structure, etc. Based on the analysis of frame structure on the basis of the TD SCDMA system, an improved dynamic channel allocation scheme, and considering the spatial distribution information of the channel allocation algorithm, by increasing the cross slot space isolation degree and reduce the cross time slot to use probability to improve the mutual interference between the base station, and make the user space distribution more uniform each time slot, can effectively increase the system capacity, improve the system performance.
出处
《计算机安全》
2014年第1期16-19,共4页
Network & Computer Security
