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Table 2 PD performance for several coupling levels ρ with SNR = 40 dB and IQ imbalance of β1 = 5% and ϑ1 = 5°, β2 = 3% and ϑ2 = 3° and (PA-2)

From: Power amplifier linearization technique with IQ imbalance and crosstalk compensation for broadband MIMO-OFDM transmitters

Coupling level ρ LS P = 4 RLS P = 4 SG P = 4 CPD-1 P = 4 CPD-2 P = 4
  ACPR (dB) EVM (dB) ACPR (dB) EVM (dB) ACPR (dB) EVM (dB) ACPR (dB) EVM (dB) ACPR (dB) EVM (dB)
-20 dB -50.5 -30.0 -50.1 -30.0 -45.8 -28.9 -40.0 -14.1 -40.5 -21.2
-30 dB -50.6 -30.2 -50.2 -30.0 -46.2 -29.1 41.7 -18.5 -41.9 -21.6
Without coupling -50.7 -30.3 -50.2 -30.3 -47.0 -29.1 -42.1 -22.5 -42.1 -22.6
  1. The DC offset are |ε1| = 0.1 and = |ε2| = 0.7.