在ＣＤＭＡ蜂窝移动通信系统中应用智能天线技术，可以减少用户间由于伪随机码的互相关而引起的多址干扰，降低由于多径传输所造成的接收信号的衰落程度，增加系统容量，提高系统性能。软件无线电具有结构简便、应用灵活等特点，为智能天线技术的发展提供了有力的支持，是使智能天线走向实用化的关键技术 The application of smart antenna technology in CDMA cellular mobile communication system can reduce the multiple access interference caused by the cross-correlation of pseudorandom codes among users, reduce the decline of the received signal due to multipath transmission, increase the system capacity, and improve the system performance. Software radio has the advantages of simple structure and flexible application. It provides strong support for the development of smart antenna technology and is the key technology to make the smart antenna practical