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CDMA for cellular systems can be describ
CDMA for cellular systems can be describ
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2022-08-02
51
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 (本题) . 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.connectionB.transmissionC.compromiseD.communication
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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