CDMA is often a digital cellular technology that utilizes spread spectrum methods to empower multiple people to share the same frequency band, letting additional economical use with 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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The signaling information fragments are pieced alongside one another in the LAC, exactly where total signaling messages are handed on to Layer 3.
Every single BTS dedicates a major quantity of output electrical power to a pilot channel, which is an unmodulated PN sequence (To put it differently, spread with Walsh code 0). Each and every BTS sector within the network is assigned a PN offset in measures of sixty four chips.
As opposed to sending Each individual letter individually, which might choose lots of effort and time, you set all of the letters into a single significant envelope and deliver that. In the event the huge envelope arrives, the letters are taken
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Different types of Multiplexing in Data Communications get more info Envision you have several friends who all need to deliver letters to precisely the same particular person simultaneously.
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速率分配： 根据调度结果和用户信道条件动态地分配每个用户的数据速率。
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