说明：  RAKE的概念是由R.Price和P.E.Green在1958年的《多径信道中的一种通信技术》一文中提出来的。Rake的中文意思是：耙子，表明瑞克接收的过程相当于用一个钉耙将各个多径信号“耙”出来，然后加以收集。通常接收的多径信号时延差很小且是随机的，叠加后的多径信号一般很难分离，而只有特定设计的信号才可以进行分离，这种信号即扩频信号。分离的手段是相关接收
(RAKE concept put forward in 1958 " a multipath channel communication technology by R.Price and PEGreen. Rake the Chinese meaning is: rake that Rick received equivalent with a rake " rake" multipath signal out, and then to be collected. Usually received multipath signal delay difference is small and is random, and the multipath signals superimposed generally difficult to isolate, and only the specific design of the signal can be separated, such a signal, i.e., the spread spectrum signal. Means of separation is a correlation receiver)