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tcp3d turbo coprocessor example usage

Hi,

We are trying to compare the hard decision outputs of Turbo coprocessor with our turbo that is implemented in matlab. We find that the outputs do not match for the same set of inputs as in the example project.
We have three streams of LLR inputs of length 1024 each and 12 LLR tail bits which are arranged in 6 x 2 matrix form in the dat file. These 12 tail bit values are supposed to be split into 4 tail bits for each of the 3 streams. How do we do the split?
Also all the LLR values are 8 bit signed integers, whereas we deal with fractional values in our matlab chain. How do we do the conversion between these two inputs?
Thanks,
Vignesh
  • Hi Vignesh,
    Welcome to the TI E2E forum. I hope you will find many good answers here and in the TI.com documents and in the TI Wiki Pages (for processor issues). Be sure to search those for helpful information and to browse for the questions others may have asked on similar topics (e2e.ti.com). Please refer the links below my signature.
    Please provide DSP part number and example, MCSDK version used.
    Thank you.