Sources and Sinks

Input and output signals and sequences

Communications Toolbox™ contains System objects, blocks, and functions to produce generate signal source data and noise to simulate communication links. Communications Toolbox also provides System objects, blocks, and functions to display and analyze the performance of your communication system simulation.

Apps

Wireless Waveform Generator

Create, impair, visualize, and export modulated waveforms

Functions

expand all

Sources

`randi`	Uniformly distributed pseudorandom integers
`randerr`	Generate bit error patterns
`Randsrc`	使用规定的字母生成随机矩阵
`commsrc.combinedjitter`	Construct combined jitter generator object
`commsrc.pattern`	Construct pattern generator object
`commsrc.pn`	Create PN sequence 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`	生成眼图
`scatterplot`	Generate scatter plot
`symerr`	计算符号错误和符号错误率的数量

Objects

expand all

Sources

`comm.barkercode`	Generate bipolar Barker code
`comm.BasebandFileReader`	Read baseband signals from file
`comm.GoldSequence`	Generate Gold sequence
`comm.HadamardCode`	生成Hadamard代码
`comm.KasamiSequence`	Generate Kasami sequence
`comm.OVSFCode`	生成OVSF代码
`comm.PNSequence`	生成伪噪声（PN）序列
`comm.RBDSWaveformGenerator`	Generate RDS/RBDS waveform
`comm.WalshCode`	从正交代码集生成WALSH代码

Sinks

`comm.BasebandFileWriter`	将基带信号写入文件
`comm.constellationdiagram`	显示输入信号的星座图
`comm.eyediagram`	Display eye diagram of time-domain signals

Blocks

expand all

Sources

Barker Code Generator	生成双巴克代码
Baseband File Reader	Read baseband signals from file
Bernoulli二进制发电机	Generate Bernoulli-distributed random binary numbers
Gold Sequence Generator	Generate Gold sequence from set of sequences
Hadamard Code Generator	生成Hadamard代码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
随机整数发生器	Generate integers randomly distributed in specified range
Walsh Code Generator	从正交代码集生成WALSH代码

Sinks

Baseband File Writer	将基带信号写入文件
Constellation Diagram	显示输入信号的星座图
Eye Diagram	Display eye diagram of time-domain signal

Topics

Signal Terminology

This section defines important Communications Toolbox 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

您可以使用随机数生成器的MATLAB功能块为通信系统建模生成噪声。

Spreading Sequences

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

使用无线波形生成器应用

Create, impair, visualize, and export modulated waveforms.

从硬件设备读取信号

通信工具箱软件可以使用软件定义无线电（SDR）的通信工具箱支持软件包读取来自外部硬件设备的信号。金宝app

Export Data to MATLAB

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