A . A、Preamble_Initial_Power=UL_Path_Loss+UL_interference+ConstantValue
B . B、Preamble_Initial_Power=DL_Path_Loss+UL_interference+ConstantValue
C . C、Preamble_Initial_Power=UL_Path_Loss+UL_interference+DefaultConstantValue
D . D、Preamble_Initial_Power=DL_Path_Loss+UL_interference+DefaultConstantValue
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