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Table 1 Downlink SNR values and modulation scheme mapping for LTE

From: A capacity and minimum guarantee-based service class-oriented scheduler for LTE networks

Minimum instantaneous downlink SNR value (dB)

Modulation scheme

1.7

QPSK

3.7

QPSK

4.5

QPSK

7.2

16QAM

9.5

16QAM

10.7

16QAM

14.8

64QAM

16.1

64QAM