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Sorgenti e destinazioni

Segnali e sequenze di input e di output e formati di file IO

Generare i dati sorgente del segnale e il rumore per simulare i collegamenti della comunicazione. Visualizzare e analizzare la prestazione della simulazione del sistema di comunicazione.

I formati di file supportati per l'elaborazione dei segnali acquisiti comprendono segnali binari in banda base e file in formato NI™ technical data management solution (TDMS). È possibile raccogliere i dati in tabelle o orari leggendo i file TDMS singolarmente o leggendo raccolte di file TDMS simultaneamente.

App

Wireless Waveform Generator

Create, impair, visualize, and export modulated waveforms

Funzioni

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Sorgenti

`randi`	Numeri interi pseudocasuali uniformemente distribuiti
`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 linear shift register
`shift2mask`	Convert shift to mask vector for linear shift register
`wgn`	Generate white Gaussian noise samples

Destinazioni

`biterr`	Compute number of bit errors and bit error rate (BER)
`eyediagram`	Generate eye diagram
`scatterplot`	Display input signal in IQ-plane
`symerr`	Compute number of symbol errors and symbol error rate

File TDMS

`tdmsread`	Read data from TDMS file (Da R2022a)
`tdmswrite`	Write data to TDMS file (Da R2022b)
`tdmsinfo`	Information about TDMS file (Da R2022a)
`tdmsreadprop`	Read properties as single row table from TDMS file (Da R2022a)
`tdmswriteprop`	Write properties to TDMS file (Da R2022b)

Oggetti

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Sorgenti

`comm.BarkerCode`	Generate bipolar Barker code
`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 bipolar Walsh code

Destinazioni

comm.ConstellationDiagram Display and analyze input signals in IQ-plane

File IO

`comm.BasebandFileReader`	Read baseband signal from file
`comm.BasebandFileWriter`	Write baseband signal to file
`tdmsDatastore`	Datastore for collection of TDMS files (Da R2022a)

Blocchi

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Sorgenti

Barker Code Generator	Generate bipolar Barker Code
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 OVSF code
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

Destinazioni

Constellation Diagram	Display and analyze input signals in IQ-plane
Eye Diagram	Display eye diagram of time-domain signal (Da R2023b)

File IO

Baseband File Writer	Write baseband signals to file
Baseband File Reader	Read baseband signals from file

Argomenti

Create Waveforms Using 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.

Informazioni complementari

Il formato file NI TDMS
Datastore

Esempi in primo piano

Multiband Signal Generation

Generate a wireless multiband signal efficiently.

Apri live script

Interference Modeling

Interference modeling in a bent pipe satellite communications link.

Apri modello