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AWR2944EVM: AWR2944 DDMA radarCube decompression problem

WEI SUNG JEN
Prodigy 30 points
Part Number: AWR2944EVM
Other Parts Discussed in Thread: AWR2944

Hi,

We refer to the lab0015high_end_corner_radar and record the radarCube which

has been compressed through AWR2944 DDMA process, and now we want to

decompress the radarCube by PC. We use the decompression Matlab code provided

by mmwave_industrial_toolbox_4_10_0\tools\memory_compression\matlab.

The decompression parameters show below:

The difference between example (test_main.m) and our experiment is only

numAdcSamples, numChirps, numVirtualAnt parameter. When we run the

decompress_data function

It will appear Error when the program run to the “black box” which is named

ExpGolombEncDec whose file type is Mex. The Error shows below:

We want to know what reason make there error and how to fix it? We also

want to know what this “black box” actually do when decompressing the data?

 

Regards,

 

Jen

  • 0
    TI__Genius 15046 points

    Hi Jen,

    I think the number of samples per block should be 32. This is because the lab combines 8 range bins, and 4RX channels per bin, totaling 32 samples. Could you try using 32 and seeing if that works? Could you also try all available radarcube formats? I haven't worked with the Matlab script for decompression, and am not sure what the three radarcube formats mean exactly.

    Regards,

    Aayush

  • 0 in reply to Aniket Mahajan
    Prodigy 30 points

    Hi Aayush,

    I have changed the samples per block to 32 but the Error also appear and the radarcube is formats2 in AWR2944.

    Could you help me understand the input parameter format when using decompress_data function, especially first parameter of this function?  

    Or whether there have another C code or file that can help us resolve the decompression problem?

    Thanks

    Regards, 

    Jen

  • 0 in reply to WEI SUNG JEN
    TI__Genius 15046 points

    Hi Wei,

    I need to get in touch with the developer of the script to understand how it can be used for DDMA radarcube. I will have to get back to you later next week, as this Friday and the coming Monday is an off in the India and US geography respectively.

    Regards,

    Aayush