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[单选题]
5GNR下,DL Layer mapping的时候当layer数大于(),codeword才是双流。
A.2
B.3
C.4
D.5
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A.2
B.3
C.4
D.5
A.DemodulationreferencesignalforPUSCH
B.Phase-trackingreferencesignalsforPUSCH
C.DemodulationreferencesignalforPUCCH
D.Soundingreferencesignal
A.DemodulationreferencesignalsforPDSCH
B.Phase-trackingreferencesignalsforPDSCH
C.DemodulationreferencesignalsforPDCCH
D.DemodulationreferencesignalsforPBCH
E.CSIreferencesignals