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Table 1 Available transmission modes and performance requirements for AWGN channel in terms of SNR threshold [26 - Figure thirty-five]

From: Adaptive utility-based scheduling algorithm for multiuser MIMO uplink

Transmission mode Spectral efficiency [bit/s/Hz] SNR threshold [dB] (BER < 10-3) SNR threshold [dB] (BER < 10-11)
QPSK 1/2 0.937 2.65 4.15
QPSK 2/3 1.250 4.40 5.85
QPSK 3/4 1.406 5.30 6.60
16QAM 1/2 1.875 7.35 8.95
16QAM 2/3 2.500 10.10 11.55
16QAM 3/4 2.812 11.25 13.05
64QAM 2/3 3.749 14.70 16.40
64QAM 3/4 4.218 16.40 18.25
64QAM 5.624 21.35 23.45