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  3. CDMA for cellular systems can be describ

CDMA for cellular systems can be describ

admin2022-08-02  66
问题 CDMA for cellular systems can be described as follows. As with FDMA， each cell is allocated a frequency (本题) ，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 (   ) , 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.waveB.signalC.bandwidthD.domain
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答案 C
解析
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中级 网络工程师

软件水平考试初中高级

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