why do i get zero vector when using USRP N210 with MATLAB using comm.SDRuReceiver ?

18 次查看（过去 30 天）

显示更早的评论

Hadeel S. Abed 2021-3-28

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/786086-why-do-i-get-zero-vector-when-using-usrp-n210-with-matlab-using-comm-sdrureceiver

评论： Karunya Choppara 2022-5-10

采纳的回答： Karunya Choppara

i want to recived real TV signal and using the following functions:

radio = comm.SDRuReceiver( 'Platform','N200/N210/USRP2','IPAddress','192.168.10.2', ...

'CenterFrequency',650e6);

spectrumAnalyzer = dsp.SpectrumAnalyzer('InputDomain','Frequency',....

'SampleRate', 1e9,....

'SpectrumType', 'Power density',...

'YLimits', [-130,20],...

'PlotAsTwoSidedSpectrum', false,...

'SpectralAverages', 50, ...

'FrequencySpan', 'Start and stop frequencies', ...

'StartFrequency', 500e6, ...

'StopFrequency', 800e6,...

'Position', figposition([50 30 30 40])) ;

[rxSig, len ] = radio();

spectrumAnalyzer(rxSig);

why the {rxSig} is zeros and also the plot results is zero.

采纳的回答

Karunya Choppara 2021-4-17

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/786086-why-do-i-get-zero-vector-when-using-usrp-n210-with-matlab-using-comm-sdrureceiver#answer_677491

When len = 0, the data from radio() call is not a valid data, and we see all zeros in the rxSig output.

When providing data to the spectrumAnalyzer, we need to check the condition that len output is greater then 0.

[rxSig, len ] = radio();

if (len>0)

spectrumAnalyzer(rxSig);

end

Hi when i am doing the communication betwee usrp n 2920 . the receiver is receiving the messy code rather than the message i sent . the clock is fixed i.e. both the devices are synchronized and also the gain has been changed too but its seems like the gain change in irrelevant. Could you please help how to get the successful communication

Karunya Choppara 2022-5-10