Changes between Version 2 and Version 3 of OFDM/MIMO/Docs/PHYDetails/FrameFormat


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Timestamp:
Dec 29, 2006, 9:35:39 PM (17 years ago)
Author:
murphpo
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  • OFDM/MIMO/Docs/PHYDetails/FrameFormat

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    11== [wiki:OFDM/MIMO MIMO OFDM] | [wiki:OFDM/MIMO#Documentation Documentation] | OFDM Frame Format ==
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    3 The frame format for the WARP MIMO OFDM core is based loosely on the frame format specified in the [http://ieeexplore.ieee.org/xpl/standardstoc.jsp?isnumber=17645&isYear=1999 IEEE 802.11a] wireless networking standard.
     3== Overview ==
     4The frame format for the WARP MIMO OFDM core is based loosely on the frame format specified in the [http://ieeexplore.ieee.org/xpl/standardstoc.jsp?isnumber=17645&isYear=1999 IEEE 802.11a] wireless networking standard. The WARP MIMO OFDM core supports both single (SISO) and two antenna (MIMO) modes. The frame formats for these two modes are detailed below.
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    56Each frame is divided into four sections, illustrated below:
    … …  
    78[[Image(OFDM/MIMO/Docs/Images:FrameFormatOverview.png)]]
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    9  * Preamble: a hard-coded 320-sample sequence used by the receiver for AGC, carrier frequency offset estimation and symbol timing estimation
    10  * Training: hard-coded OFDM symbols used for channel estimation. The number of training symbol periods is programmable per-packet.
    11  * Base Rate: a programmable number of OFDM symbols containing a packet's header, modulated using the user-specified base-rate modulation scheme.
    12  * Full Rate: a programmable number of OFDM symbols containing a packet's payload, modulated using the user-specified full-rate modulation scheme.
     10=== Preamble ===
     11A hard-coded 320-sample sequence used by the receiver for AGC, carrier frequency offset estimation and symbol timing estimation
     12[source:/ResearchApps/PHY/MIMO_OFDM/ofdm_tx_mimo_init.m#L48 ofdm_tx_mimo_init]
    1313
    14 The WARP MIMO OFDM core supports both single (SISO) and two antenna (MIMO) modes. The frame formats for these two modes are detailed below.
     14=== Training ===
     15A hard-coded OFDM symbols used for channel estimation. The number of training symbol periods is programmable per-packet.
     16[source:/ResearchApps/PHY/MIMO_OFDM/ofdm_tx_mimo_init.m#L37 ofdm_tx_mimo_init]
     17
     18=== Base Rate ===
     19A programmable number of OFDM symbols containing a packet's header, modulated using the user-specified base-rate modulation scheme.
     20[source:/ResearchApps/PHY/MIMO_OFDM/ofdm_tx_mimo_init.m#L150]
     21
     22=== Full Rate ===
     23A programmable number of OFDM symbols containing a packet's payload, modulated using the user-specified full-rate modulation scheme.
     24[source:/ResearchApps/PHY/MIMO_OFDM/ofdm_tx_mimo_init.m#L150]
    1525
    1626== SISO Frame Format ==