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TSW14J56EVM: Understanding the received ADC samples from TSW14J56EVM

Part Number: TSW14J56EVM

Hi,

I am currently working with AFE7950EVM and TSW14J56 modules. I have experimented with transmission of single tone signals and successfully processed the received ADC data (65536 samples). Now, I am attempting to transmit a multi tone signal (6 signals with tone bandwidth as 40MHz and tone centered at 55MHz)where the transmitted ADC samples are 65536 and at the receiver the received ADC data samples are 65536.
Below images show the DAC window and ADC window of the HSDCPro during transmission and reception of the data.
DAC Output:
ADC Output:
How to differentiate the 6 tones based on the received data in order to apply 1D-FFT or 2D-FFT? 
Looking forward for your reply
Regards,
Vandana 
  • Hi Vandana,

    Can you explain a little more on what you are asking for when you say differentiate the 6 tones? Are you trying to calculate a parameter similar to the IMD3 for two tones but for six tones? If so then we are limited to the calculation for two tones and for six tones you will have to extract the data and create your own calculator for the six tone measurement.

    Regards,

    David Chaparro

  • I have previously worked with different millimeter wave sensors. There if I set the configuration of 128 chirps and 256 samples. Then the received data will consist data size of 256x128. I can easily identify that for 1st chirp there are 256 samples and so on. This is useful in applying 1D-FFT and 2D-FFT in post processing of the received data . In the case of TSW14J56 we are transmitting 65536 samples and receiving 65536 samples. This configuration does not change if I transmit  single tone or multi tone. Since signal processing of the data is important for my work. I need to understand how to process the received data in the case of TSW14J56?  

  • Hi Vandana,

    I will be closing this post because we are talking through email.

    Regards,

    David Chaparro