从智能天线与传统蜂窝基站天线比较谈TD-SCDMA组大网(宏蜂窝)的可能性

On the Possibility of TD-SCDMA Used in Macro-cell by Comparison between Smart Antenna and Traditional Cell Base Station Antenna

首先概述了TD-SCDMA系统智能天线技术的基本原理。给出了一种应用于TD-SCDMA智能天线系统的4端口阵列天线以及该天线上通过射频部分调节各端口权值可以实现智能天线系统所需的几种方向图。最后比较了TD-SCDMA、WCDMA、CDMA2000三种系统覆盖性能,从电磁传播角度说明TD-SCDMA系统组大网是完全可能的。

The basic principle of the smart antennain TD-SCDMA is firstly summarized. A four ports antennaarray used in TD-SCDMA smart antenna system is illustrated.Various patterns needed in smart antenna system are realizedby adjusting the port coefficients of the antenna through RFparts. The coverage of three systems: TD-SCDMA, WCDMA,CDMA2000 are compared, which shows that it is possible touse TD-SCDMA system in macro-cell in view ofelectromagnetic transmission.