Interference analysis of TDD-CDMA systems with directional antennas

被引：2
|
作者：
Wang, LC
Huang, SY
Tseng, YC
机构：
来源：
2003 IEEE 58TH VEHICULAR TECHNOLOGY CONFERENCE, VOLS1-5, PROCEEDINGS | 2003年
关键词：
D O I：
10.1109/VETECF.2003.1285246
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper explores the advantages of using directional antennas in TDD-CDMA systems with asymmetric traffic. In the TDD-CDMA system, asymmetric traffic from neighboring cells may cause the cross-slot interference, which can seriously degrade system capacity. We analyze the cross-slot interference of the TDD-CDMA system with the trisector cellular architecture, where three directional antennas are employed at each base station. We find that the directivity of directional antennas can provide an additional degree of freedom for allocating resources. This advantage enables the TDD-CDMA system to support asymmetric uplink and downlink traffic with different rates of asymmetry among neighboring cells in the entire system.
引用
收藏
页码：1369 / 1373
页数：5
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