Idealized Baseband Simulation

Simulate single-carrier RF networks, connect directly to Simulink^® blocks, generate C-code

Use the blocks in the Idealized Baseband library to create mathematical models of RF components within the Simulink environment. You can connect blocks in library to other Simulink blocks directly without an input or an output connection block and run the simulations. During the simulation, the model uses complex-baseband representation of the blocks to compute time-domain waveforms.

Idealized Baseband blocks assume perfect impedance matching and a nominal impedance of 1 ohm. This means that there are no loading effects and the power flow is unidirectional. You can use these blocks in digital signal processing to estimate the impact of RF phenomena on overall system performance.

The RF Blockset Idealized Baseband library includes RF amplifiers, filters, and mixers. In the Simulink environment, you connect these Idealized Baseband library blocks to other Simulink blocks to represent a higher abstract level for your RF architecture.

You can also use the block library with Simulink Coder™ software to generate C code for real-time execution.

Blocks

Amplifier	Complex baseband model of amplifier with noise and nonlinearities (Since R2020a)
Mixer	Model RF and IQ modulator and RF and IQ demodulator with impairments and noise
Power Amplifier	Model narrowband power amplifier with memory (Since R2022a)
S-parameters	Model RF complex baseband S-parameters in Simulink (Since R2023a)
Filter	Filter RF complex baseband signals in Simulink (Since R2023a)

Topics

Idealized Baseband Library
Learn about Idealized Baseband library environment.
Nonlinearities and Noise in Idealized Baseband Amplifier Block
Use Idealized Baseband Amplifier block to simulate nonlinearities and noise in your RF system design.
Nonlinearities and Noise in Idealized Baseband Mixer Block
Use Idealized Baseband Mixer block to simulate nonlinearities and noise in your RF system design.

Featured Examples

Idealized Baseband Amplifier with Nonlinearity and Noise

The example shows how to use the idealized baseband library Amplifier block to amplify a signal with nonlinearity and noise. The Amplifier uses the Cubic Polynomial model with a Linear power gain of 10 dB, an Input IP3 nonlinearity of 30 dBm, and a Noise figure of 3 dB.

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Modulate Quadrature Baseband Signals Using IQ Modulators

Modulate quadrature baseband signals using two different RF Blockset™ blocks. You can use either an idealized baseband Mixer block or a circuit envelope IQ Modulator block in your model to modulate quadrature baseband signals to the RF level. Observe the impairments in the modulated output signal due to gain imbalance, third-order intercepts (OIP3) and system noise in the complex output power density and output power spectrum analyzers.

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Speed Up PA and DPD simulation

Speed up your PA and DPD simulation using Idealized Baseband Power Amplifier block.

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Model RF Complex Baseband S-Parameters in Simulink

Compare Idealized Baseband and Circuit Envelope S-parameters blocks.

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Time Domain Filtering of RF Complex Baseband Signals in Simulink

Compare Idealized Baseband and Circuit Envelope Filter blocks.

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