CDMA for cellular systems can be describ

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问题 CDMA for cellular systems can be described as follows. As with FDMA， each cell is allocated a frequency ( ) ，which is split into two parts, half for reverse (mobile unit to base station) and half for ( ) (base station to mobile unit). For full-duplex ( ) . a mobile unit uses both reverse and forwardchannels. Transmission is in the form of direct-sequence spread (本题) , which uses a chipping code to increase the data rate of the transmission, resulting inan increased signal bandwidth. Multiple access is provided by assigning ( ) chipping codes to multiple users, so that the receiver can recover the transmission of an individual unit from multiple transmissions.A.structureB.spectrumC.streamD.strategy

选项

答案 B

解析

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本试题收录于：中级网络工程师题库软件水平考试初中高级分类

中级网络工程师

软件水平考试初中高级

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CDMA for cellular systems can be describ

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