摘要
在TDD—CDMA系统中由于对上下行不对称业务的需求,使得不同小区间的上下行切换点不同,因此会产生严重的小区间干扰(基站和基站间干扰),需要使用动态信道分配算法(DCA).该文提出了一种新算法(基于路径损耗的抗基站间干扰DCA),它通过路径损耗进行资源预留,同时通过尽量避免基站问的相互干扰机制来最大化提高系统容量.仿真结果表明提出的DCA能够显著改善非对称业务下系统的性能.
In TDD-CDMA system, the different asymmetrical requirements between uplink (UL) and downlink (DL) in different Base Station (BS) and different time will generate serious inter-cell interference. From the interference point of view, Dynamic Channel Allocation (DCA) is treated mandatorily on TDD-CDMA systems. In this paper, a novel and advanced DCA algorithm is presented, which is based on radio resource reserving related to pathless assistance and BS-BS interference resolving mechanisms. Simulation results show the novel DCA can work better than the traditional DCA schemes for asymmetrical traffic.
出处
《电子与信息学报》
EI
CSCD
北大核心
2004年第7期1038-1044,共7页
Journal of Electronics & Information Technology
基金
国家863项目资助课题(编号:2003AA123310)
