CDMA is usually a digital cellular technologies that makes use of spread spectrum strategies to allow multiple end users to share precisely the same frequency band, making it possible for far more effective use from the readily available spectrum.
码片同步 ：指接收端的扩频码与发送端的扩频码在码片时序上的同步。这一过程需要解决码片时序的捕获和跟踪问题，通常采用滑动相关法、匹配滤波法等技术实现。
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A simulation process has become made to combine generate exam measurement and website link stage simulation of various linear receiver to obtain responsible efficiency estimation of HSDPA+ multi-antenna procedure with a macro-cell network.
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是利用电磁波的反射特性来探测目标。雷达发射机产生特定频率、波形的电磁波，经由天线向空间定向辐射，形成具有一定方向性的波束。当波束遇到目标物体时，电磁波会在目标表面发生反射，其中部分反射波沿着原路返回被雷达天线接收，接收机对微弱的回波信号进行放大、滤波、解调等一系列精细处理，提取出目标的距离、方位、速度等关键信息。这一过程如同向黑暗中投掷石子，通过聆听回声来判断周围物体的位置
This paper describes advancements in detail of HSPA evolution that can access efficiency corresponding to Individuals of long-term evolution of UMTS terrestrial radio access network inside of a 5 MHz deployment.
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This facilitates interaction Among the many digital devices within a home that happen to be connected to the Home network. House Area
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This advancement was the culmination of collaborative efforts involving telecommunications equipment brands, standards corporations, and read more mobile network operators.