智能天线技术在移动通信中的应用

Application of Smart Antenna Technique in Mobile Communication

智能天线采用空分复用技术,利用信号在传播方向上的差异,将同频率、同时隙的信号从空域区分开来。它可以成倍的扩展通信容量,并和其它复用技术相结合,最大限度的利用有限的频谱资源;可以有效地克服移动通信中由于复杂的地形、建筑物结构等对电波传播的影响,以及时延扩展、多径衰落、共信道干扰等产生的不利影响;能有效地扩大信号覆盖范围,降低系统建设成本;还能进行紧急呼叫定位,并提供更高的定位精度,可开发更多的增值业务。因此其在各种移动通信系统中得到了广泛的应用。

Smart antenna distinguishes same frequency,same timeslot signal in airspace by using technique and taking advantage of different broadcasting direction of signal.It can overcome influence from complicate topography,building structure,delay extend,multipath fading and common channel for signal broadcasting in mobile communication.And it can enlarge signal coverage,save system construction cost,provide higher accuracy while accuracy emergency call and develop more service to increase in value.So it can be widely applied in various mobile communication systems.