Apply I/Q Imbalance to 16-QAM Signal in Simulink

The model applies 16-QAM modulation, applies a I/Q imbalance to a signal, and the plots the signal constellation by using a Constellation Diagram block.

Display the signal constellation with no impairment.

Display the signal constellation with amplitude imbalance impairment only.

The amplitude imbalance is: 3.00 dB.

Display the signal constellation with phase imbalance impairment only.

The phase imbalance is: 30.00 degrees.

Display the signal constellation with in-phase DC offset impairment only.

The in-phase DC offset is: 1.50.

Display the signal constellation with quadrature DC offset impairment only.

The quadrature DC offset is: 1.50.

Impairments can be applied as negative values. Display the signal constellation with all imbalance parameters set to nonzero negative impairment values.

The amplitude imbalance is: -3.00 dB.
The phase imbalance is: -30.00 degrees.
The in-phase DC offset is: -1.50.
The quadrature DC offset is: -1.50.

Related Topics

• Compensate I/Q Imbalance
• Visualize RF Impairments

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