Which two statements are true about 64 QAM modulation in the downlink direction?

Ericsson ECP-383 Question Answer

Which two statements are true about 64 QAM modulation in the downlink direction? (Choose two.)

The usage of 64 QAM is not dependent on radio channel quality.

The usage of 64 QAM is UE dependent.

The spectral efficiency of 64 QAM is higher than QPSK in strong radio conditions.

The spectral efficiency of 64 QAM is lower than QPSK in strong radio conditions.

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