【摘要】 系统地比较了移动通信系统中自适应智能天线的两大类波束形成技术，即基于来波方向的波束形成和基于参考信号的波束形成。分析了两者的优缺点、性能和适用条件。最后重点讨论了在各种应用环境下对波束形成算法进行选择时所要考虑的关键因素。更多还原

【Abstract】 This article systematically compares two major types of beam - forming techniques in adaptive smart antennas for mobile communication systems, i. e., direction - of - arrival based beam - forming and reference signal based beam - forming. Their pros and cons, performance and the conditions br their apnlication are analyzed. Finally the key factors in choosing the appropriate type of BF in various application environments are highlighted.更多还原