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
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摘要: 在TDDCDMA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。Abstract: 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 pathloss assistance and BS-BS interference resolving mechanisms. Simulation results show the novel DCA can work better than the traditional DCA schemes for asymmetrical traffic.
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王文博等.时分双工CDMA移动通信技术[M].北京:北京邮电大学出版社,2001,第1章.[2]［2］TS25. 922 V5. 0. 0, Radio resource management strategies[S]. 3GPP RAN WG2, 2002-03.[3]Haas H, McLaughlin S. A dynamic channel assignment algorithm for a hybrid TDMA/CDMA-TDD interface using the novel TS-opposing technique[J].IEEE J. on Selected Areas in Communications.2001, 19(10):1831-1846[4]彭木根,王文博.基于多用户检测技术的TDD-CDMA系统上行链路容量研究[J].北京:北京邮电大学学报,2003,26(3):21-25.[5]Peng Mugen, Wang Wenbo. Novel approach for downlink capacity analysis in CDMA networks [J]. PIMRC2003, Beijing, China, 2003: 1901-1905.[6]Harri Holma.[J].Antti Toskala. WCDMA for UMTS[M]. New York: John Wiley Sons Ltd.2000,:-[7]［7］3GPP TR25. 942 v.4.0.0, RF System Scenarios[S]. 3GPP RAN WG2, 2002-03. -
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