Channel Modeling and RF Impairments

AWGN, Rayleigh, Rician, MIMO, phase noise, frequency offset, nonlinearities

Communications System Toolbox™ enables you to model and visualize noisy SISO and MIMO channels having Rayleigh or Rician fading profiles. Multiple Doppler spectrum shapes are available. In addition, you can model RF impairments arising from actual hardware implementation.

System Objects

comm.AWGNChannel Add white Gaussian noise to input signal
comm.gpu.AWGNChannel Add white Gaussian noise to input signal with GPU
comm.BinarySymmetricChannel Introduce binary errors
comm.LTEMIMOChannel Filter input signal through LTE MIMO multipath fading channel
comm.MemorylessNonlinearity Apply memoryless nonlinearity to input signal
comm.MIMOChannel Filter input signal through MIMO multipath fading channel
comm.PhaseFrequencyOffset Apply phase and frequency offsets to input signal
comm.PhaseNoise Apply phase noise to complex, baseband signal
comm.RayleighChannel Filter input signal through a Rayleigh multipath fading channel
comm.RicianChannel Filter input signal through a Rician fading channel
comm.ThermalNoise Add receiver thermal noise


AWGN Channel Add white Gaussian noise to input signal
Binary Symmetric Channel Introduce binary errors
Multipath Rayleigh Fading Channel Simulate multipath Rayleigh fading propagation channel
Multipath Rician Fading Channel Simulate multipath Rician fading propagation channel
Free Space Path Loss Reduce amplitude of input signal by amount specified
I/Q Imbalance Create complex baseband model of signal impairments caused by imbalances between in-phase and quadrature receiver components
MIMO Channel Filter input signal through MIMO multipath fading channel
Memoryless Nonlinearity Apply memoryless nonlinearity to complex baseband signal
Phase Noise Apply receiver phase noise to complex baseband signal
Phase/Frequency Offset Apply phase and frequency offsets to complex baseband signal
Receiver Thermal Noise Apply receiver thermal noise to complex baseband signal
Complex Phase Difference Output phase difference between two complex input signals
Complex Phase Shift Shift phase of complex input signal by second input value


awgn Add white Gaussian noise to signal
bsc Model binary symmetric channel
doppler Construct Doppler spectrum structure
filter Filter signal with channel object
rayleighchan Construct Rayleigh fading channel object
ricianchan Construct Rician fading channel object
stdchan Construct channel object from set of standardized channel models
doppler.ajakes Construct asymmetrical Doppler spectrum object
doppler.bell Construct bell-shaped Doppler spectrum object
doppler.bigaussian Construct bi-Gaussian Doppler spectrum object
doppler.flat Construct flat Doppler spectrum object
doppler.gaussian Construct Gaussian Doppler spectrum object
doppler.jakes Construct Jakes Doppler spectrum object
doppler.rjakes Construct restricted Jakes Doppler spectrum object
doppler.rounded Construct rounded Doppler spectrum object
legacychannelsim Toggles random number generation mode for channel objects
plot (channel) Plot channel characteristics with channel visualization tool
plotPhaseNoiseFilter Plot response of phase noise filter block
reset Reset channel object

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