Changes between Version 5 and Version 6 of OFDM/MIMO/Docs/PHYDetails


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Timestamp:
Aug 30, 2009, 1:31:50 PM (15 years ago)
Author:
murphpo
Comment:

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  • OFDM/MIMO/Docs/PHYDetails

    v5 v6  
    2020The bandwidth of the OFDM signal is 1/4 of the core's master clock. In most implementations, the master clock is sourced by the host PLB46 bus. We have tested the core with 40 and 80MHz bus clocks (corresponding to 10 and 20MHz over-the-air bandwidths).
    2121
    22 SubcarrierIndicies.png
     22The 64 subcarriers are numbered ![0, 1, ... 63] throughput the model and supporting code.
     23
     24'''Subcarrier Indices'''[[BR]]
     25[[Image(OFDM/MIMO/Docs/Images:Subcarrier_Indices.png)]]
     26
     27Our example projects load data into 48 subcarriers. The table below lists the utilization of all subcarriers in our designs:
     28||''Index''||''Utilization''||
     29||0 (DC)|| Must be empty (zero) ||
     30||7, 21, 43, 57|| BPSK pilot tones ||
     31||1-6, 8-20, 21-26, 38-42, 44-56, 58-63|| Data symbols ||
     32||27-37|| Empty (zero) ||