25、NR系统中上行物理信号有哪些
A.解调参考信号(Demodulation reference signals, DM-RS) B.相位跟踪参考信号(Phase tracking reference signals, PT-RS) C.探测参考信号(Sounding reference signal, SRS) D.信道状态信息参考信号(Channel -state information reference signal, CSI-RS)正确答案ABC
25、NR系统中上行物理信号有哪些
A.解调参考信号(Demodulation reference signals, DM-RS) B.相位跟踪参考信号(Phase tracking reference signals, PT-RS) C.探测参考信号(Sounding reference signal, SRS) D.信道状态信息参考信号(Channel -state information reference signal, CSI-RS)正确答案ABC