TDD-CDMA系统中支持非对称业务的动态信道分配算法研究  

A Novel Dynamic Channel Allocation Scheme to Support Asymmetrical Services in TDD-CDMA Systems

作　　者：彭木根[1] 王文博[1] 

机构地区：[1]北京邮电大学电信工程学院,北京100876

出　　处：《电子与信息学报》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)

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.

关 键 词：TDD-CDMA系统 动态信道分配(DCA) 小区间干扰 资源预留 

分 类 号：TN914.5[电子电信—通信与信息系统]