• documentation
main content

test and measurement -凯发k8网页登录

waveform generation, file io formats, visualization, and performance analysis

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.

apps

wireless waveform generatorcreate, impair, visualize, and export modulated waveforms
analyze ber performance of communications systems

functions

biterrnumber 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
display input signal in iq-plane
generate eye diagram
plot response of phase noise filter block
generalized marcum q-function
equivalent noise bandwidth of digital lowpass filter
q function
inverse q function
communications toolbox block characteristics
read data from tdms-file
write data to tdms-file
information about tdms-file
read properties as single row table from tdms-file
write properties to tdms-file

objects

comm.acprmeasure adjacent channel power ratio (acpr)
compute bit or symbol error rate of input data
comm.evmmeasure error vector magnitude (evm) of received signal
comm.mermeasure modulation error ratio of received signal
powermetermeasure power and ccdf of the power of voltage signal
display and analyze input signals in iq-plane
display frequency spectrum of time-domain signals
display time-domain signals
display vectors or arrays
read baseband signal from file
write baseband signal to file
datastore for collection of tdms-files

blocks

compute bit error rate or symbol error rate of input data
measure error vector magnitude (evm)
measure modulation error ratio in digital modulation applications
measure power and the ccdf of the power of voltage signal in simulink
display and analyze input signals in iq-plane
display eye diagram of time-domain signal
display and analyze signals generated during simulation and log signal data to matlab
display frequency spectrum
wireless waveform source exported to simulink
write baseband signals to file
read baseband signals from file

topics


  • obtain bit error rate results and statistics.


  • learn how to use the bit error rate analysis app.

  • create waveforms using wireless waveform generator app

    create, impair, visualize, and export modulated waveforms.


  • learn about acpr measurements.


  • learn about evm and mer for measuring modulation accuracy.


  • display digitally modulated signals in the iq-plane.


  • apply various rf impairments to a qam signal.


  • show reference constellation plots for 16-psk modulation of gray-coded and binary-coded symbol mapping by setting plotconstellation=true when using the modulation function.


  • in digital communications, an eye diagram provides a visual indication of how noise might impact system performance.


  • list of references for further reading.

related information



网站地图