Some problems when using the Pluto

Dear Sirs, I have some problems when using the Pluto

I am a student from National Taiwan University and I have some problems when using the Pluto for signal transmission experiment.

I executed the Matlab program for sending and receiving signals at the same time (at the same program) via Pluto shown in Fig.1. The API used on the Matlab is "iio_sys_obj_matlab.m". I sent a sinusoidal signal with 1024 in length and the received the consecutive 2048*7 signals shown in Fig.2. My problems are:

  1. Why are the received signals null at the beginning?
  2. How can I transmit and receive signals at the same time by using Pluto? That is, I can acquire the corresponding received signal of the transmitted signal at the same time instant?

 

Fig.1

 

Fig.2

Thanks,

Parents Reply
  • Thank You, Mr. Travis,
    I have download“ Communications Toolbox Support Package for Analog Devices ADALM-Pluto Radio”,
    and use the  sendRepeat  fuction 

    I enter the code:

    fs = 2e6;
     sw = dsp.SineWave;
     sw。振幅= 0.5;
     sw.Frequency = 100e3;
     sw.ComplexOutput = true;
     sw.SampleRate = fs;
     sw.SamplesPerFrame = 5000;
     txWaveform = sw();  
    tx = sdrtx('Pluto');
     tx.CenterFrequency = 2.415e9;
     tx.BasebandSampleRate = fs;
     tx.Gain = -5;
     sendRepeat(tx,txWaveform); 

    but have error

    ## Establishing connection to hardware. This process can take several seconds.
    Error using comm.plutoradio.base/resolvePlutoURI
    No devices with RadioID 'usb:0' can be found.

    Error in comm.plutoradio.tx/resolveURI

    Error in matlabshared.libiio.base/get.resolvedURI

    Error in matlabshared.libiio.base/getContext

    Error in comm.libiio.AD9361.base_control/getContext

    Error in matlabshared.libiio.base/setupImpl

    Error in comm.libiio.AD9361.base_control/setupImpl

    Error in comm.libiio.AD9361.base/setupImpl

    Error in comm.libiio.AD9361.tx_control/setupImpl

    Error in comm.libiio.AD9361.tx/setupImpl

    Error in comm.plutoradio.tx/setupImpl

    Error in comm.SDRTxPluto/setupImpl

    Error in comm.libiio.AD9361.tx/transmitRepeat

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