Provides visualization capabilities to see the effects of RF impairments and corrections in a satellite downlink. The link employs 16-QAM modulation in the presence of AWGN and uses a High
This model shows how to use the SISO Fading Channel block from the Communications Toolbox™ to simulate multipath Rayleigh and Rician fading channels, which are useful models of real-world
This model shows the effects of adjacent and co-channel interference on a PSK modulated signal. The model includes two interferers, Interferer 1 and Interferer 2. The model enables you to
Use Rayleigh and Rician multipath fading channel System objects and their built-in visualization to model a fading channel. Rayleigh and Rician fading channels are useful models of
Set the bit energy to noise density ratio (Eb/No) for communication links employing channel coding.
The transmit and receive processing for a 802.11ac™ multi-user downlink transmission over a WINNER II fading channel. To run this example, you need the WLAN Toolbox™ and the WINNER II
Creates a frequency-flat Rayleigh fading channel object and calls it to process a DBPSK signal consisting of a single vector. Bit error rate is computed for different values of the
Illustrates how to change the default Jakes Doppler spectrum of a constructed Rayleigh channel object to a flat Doppler spectrum.
Change the default Jakes Doppler spectrum of a constructed Rician channel object to a Gaussian Doppler spectrum with normalized standard deviation of 0.3, and subsequently display the
Typically, a path gain in a fading channel changes insignificantly over a period of 1/(100fd) seconds, where fd is the maximum Doppler shift. Because this period corresponds to a very large
Pass a QPSK signal through a Rayleigh multipath fading channel. Change the signal bandwidth to observe the impact of the fading channel on the QPSK constellation.
Illustrates how to change the default Jakes Doppler spectrum of a constructed three-path Rayleigh channel object to a cell array of different Doppler spectra, and then change the
Filters input data through a Rayleigh fading channel within a for loop. It uses the small data sets from successive iterations to create an animated effect. The Rayleigh fading channel has
Set up a system with multiple base stations (BS), multiple mobile stations (MS) and multiple MIMO downlinks from one BS sector to one MS, using the WINNER II Channel Model for Communications
The syntax for viewing and changing Doppler object properties is the same as for the case of channel objects (see Displaying and Changing Object Properties ).
Pass an FSK signal through a Rayleigh multipath fading channel. Change the signal bandwidth to observe the impact of the fading channel on the FSK spectrum.
Plots the power of a faded signal versus sample number. It illustrates the syntax of creating and calling a comm.RayleighChannel fading channel object and the state retention of the channel
This model applies RF impairments to a signal modulated by differential quadrature phase shift keying (DQPSK). To demonstrate and visualize the RF impairments, levels applied in this
Add a phase noise vector and frequency offset vector to a 16-QAM signal. Display the constellation.
Simulate High-Frequency (HF) ionospheric channels, based on the models described in Recommendation ITU-R F.1487. In particular, it shows how to simulate the general Watterson channel
The effects that spectral and phase noise have on a 100 kHz sine wave.
The value of a channel object's ChannelFilterDelay property is the number of samples by which the output of the channel lags the input. If you compare the input and output data sets directly,