Test and Measurement
Generate waveforms and use quantitative tools to measure system performance. Use graphical utilities such as constellation and eye diagrams to visualize the effects of various impairments and corrections.
Supported file formats to process captured signals include binary baseband signal and NI™ technical data management solution (TDMS) format files. You can read data into tables or timetables by reading TDMS-files individually, or by reading collections of TDMS-files simultaneously.
Bit Error Rate Calculation and Estimation
|Number of bit errors and bit error rate (BER)|
|Compute number of symbol errors and symbol error rate|
|BER and SER for uncoded data over AWGN channels|
|BER for coded AWGN channels|
|Error probability estimate and confidence interval of Monte Carlo simulation|
|BER and SER for uncoded data over Rayleigh and Rician fading channels|
|Fit curve to nonsmooth empirical BER data|
|BER for imperfect synchronization|
|BER using semianalytic technique|
|Measure adjacent channel power ratio (ACPR)|
|Compute bit or symbol error rate of input data|
|Measure error vector magnitude (EVM) of received signal|
|Measure modulation error ratio of received signal|
|Measure power and CCDF of the power of voltage signal (Since R2021a)|
|Error Rate Calculation||Compute bit error rate or symbol error rate of input data|
|EVM Measurement||Measure error vector magnitude (EVM)|
|MER Measurement||Measure modulation error ratio in digital modulation applications|
|Power Meter||Measure power and the CCDF of the power of voltage signal in Simulink (Since R2021a)|
- Bit Error Rate Analysis Techniques
Obtain bit error rate results and statistics.
- Analyze Performance with Bit Error Rate Analysis App
Learn how to use the Bit Error Rate Analysis app.
- Compute BER for QAM System with AWGN Using MATLAB
Communications Toolbox™ features build upon the MATLAB® computational and visualization tools, enabling you to use higher level functions when simulating communications systems.
- Create Waveforms Using Wireless Waveform Generator App
Create, impair, visualize, and export modulated waveforms.
- ACPR Measurements Using WCDMA Signal
This example shows you how to obtain adjacent channel power ratio (ACPR) measurements using a WCDMA communications signal, according to the 3GPP™ TS 125.104 standard .
- Measure Modulation Accuracy
Learn about EVM and MER for measuring modulation accuracy.
- Scatter Plots and Constellation Diagrams
Display digitally modulated signals in the IQ-plane.
- Visualize RF Impairments
Apply various RF impairments to a QAM signal.
- Plot Signal Constellations
Show reference constellation plots for 16-PSK modulation of Gray-coded and binary-coded symbol mapping by setting
PlotConstellation=truewhen using the modulation function.
- Eye Diagram Analysis
In digital communications, an eye diagram provides a visual indication of how noise might impact system performance.
- VITA 49 Packet Format
Explore the signal data packet and context data packet format of VITA 49 file.
- Selected Bibliography for Measurements
List of references for further reading.