Sources and Sinks

Input and output signals and sequences

Generate signal source data and noise to simulate communication links. Visualize and analyze the performance of your communications system simulation.

Apps

Wireless Waveform Generator

Create, impair, visualize, and export modulated waveforms

Functions

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Sources

`randi`	Uniformly distributed pseudorandom integers
`randerr`	Generate bit error patterns
`randsrc`	Generate random matrix using prescribed alphabet
`commsrc.combinedjitter`	Construct combined jitter generator object
`commsrc.pattern`	Construct pattern generator object
`zadoffChuSeq`	Generate root Zadoff-Chu sequence
`mask2shift`	Convert mask vector to shift for shift register configuration
`shift2mask`	Convert shift to mask vector for shift register configuration
`wgn`	Generate white Gaussian noise samples

Sinks

`biterr`	Number of bit errors and bit error rate (BER)
`eyediagram`	Generate eye diagram
`scatterplot`	Generate scatter plot
`symerr`	Compute number of symbol errors and symbol error rate

Objects

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Sources

`comm.BarkerCode`	Generate bipolar Barker code
`comm.BasebandFileReader`	Read baseband signals from file
`comm.GoldSequence`	Generate Gold sequence from set of sequences
`comm.HadamardCode`	Generate Hadamard code
`comm.KasamiSequence`	Generate Kasami sequence
`comm.OVSFCode`	Generate OVSF code
`comm.PNSequence`	Generate a pseudonoise (PN) sequence
`comm.RBDSWaveformGenerator`	Generate RDS/RBDS waveform
`comm.WalshCode`	Generate Walsh code from orthogonal set of codes

Sinks

`comm.BasebandFileWriter`	Write baseband signals to file
`comm.ConstellationDiagram`	Display constellation diagram for input signals

Blocks

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Sources

Barker Code Generator	Generate bipolar Barker Code
Baseband File Reader	Read baseband signals from file
Bernoulli Binary Generator	Generate Bernoulli-distributed random binary numbers
Gold Sequence Generator	Generate Gold sequence from set of sequences
Hadamard Code Generator	Generate Hadamard code from orthogonal set of codes
Kasami Sequence Generator	Generate Kasami sequence from set of Kasami sequences
OVSF Code Generator	Generate orthogonal variable spreading factor (OVSF) code from set of orthogonal codes
PN Sequence Generator	Generate pseudonoise sequence
Poisson Integer Generator	Generate Poisson-distributed random integers
Random Integer Generator	Generate integers randomly distributed in specified range
Walsh Code Generator	Generate Walsh code from orthogonal set of codes

Sinks

Baseband File Writer	Write baseband signals to file
Constellation Diagram	Display constellation diagram for input signals
Eye Diagram Scope	Display eye diagram of time-domain signal

Topics

Use Wireless Waveform Generator App

Create, impair, visualize, and export modulated waveforms.

Signal Terminology

Define terms related to matrices, vectors, and scalars, as well as frame-based and sample-based processing.

Sources and Sinks

Error statistics and plotting.

Random Noise Generators in Simulink

You can generate noise for communication system modeling using the MATLAB® Function block with a random number generator.

Spreading Sequences

Comparison of spreading sequences for single and multiuser scenarios in single path and multipath environments.

Export Data to MATLAB

Sending the simulation results to the MATLAB workspace and using MATLAB to analyze the data.

Featured Examples

Multiband Signal Generation

Generate a multiband signal efficiently using the Communications Toolbox™.

Open Script

Interference Modeling

Interference modeling in a bent pipe satellite communications link using Communications Toolbox™.

Open Model

Communications Toolbox Documentation

Support

Bridging Wireless Communications Design and Testing with MATLAB

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