智能天线发射数字多波束形成方法研究

智能天线技术应用于第三代移动通信系统中具有可以减小因频率复用造成的共信道干扰（CCI）、提高频谱利用效率及增大系统容量、减小发射功率和空间电磁干扰、增加发射效率、对小区进行动态划分等优点。阵列天线的数字多波束形成技术是智能天线中的一项重要技术，关于接收数字多波束形成处理技术国内外相关文献报导较多，而对于发射数字多波束形成技术报导较少。文中主要讨论了两种发射数字多波束的形成方法，并通过计算机仿真试验验证该方法的可行性。此方法对蜂窝定位，空分多址系统的实现也有实用价值。

Research of smart antenna transmit digital multi-beaming method

Smart antenna may reduce coggege of Electronic Engineering of UESTC, the cochannel interferences (CCI), enhance the user capacity and spectrum efficiency, reduces the transmit power and electromagnetic interferences, enhance the transmit efficiency, dynamically divide cells in third generation cellular. The digital beamforming (DBF) of the phased array antenna is a key technology of the smart antenna. There are many reports about the receive digital multi beaming process, but the report about transmit digital multi beaming is very few. This paper introduces two methods about the transmit digital multi beaming and obtains the result of computer simulation. This method may use in the SDMA and cell location system.