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How can I modify OFDM

    Question

  • Hello, I am trying to modify OFDM on SORA SDK v1.1 so that I can turned off some subcarriers when transmitting (like non-continuous OFDM). I have done this before on USRP. Now in SORA, could somebody help me about the following problems?

    1. SORA SDK v1.1 provide source code for 802.11a and 802.11b, but I need to implement 802.11g OFDM. Since 802.11a and g both use OFDM, how can I adopt 802.11a code to 802.11g?

    2. In order to turn off some subcarriers, what source file(s) should I modify? I have checked the source code for serveal days but still haven't got any clue.

     

    Thanks a lot

    Wednesday, December 22, 2010 5:38 PM

All replies

  • 1. 11a and 11g is exactly the same baseband.

    2. You might want to look into the subcarrier mapping. The code is indeed slightly complicated. So you may take some time to look through. As a start point, you may go throught the files located at \SoraRoot\src\bb\dot11a\dot11. Especially these atx* files.

    Sunday, December 26, 2010 4:28 AM
    Owner