Changes between Version 7 and Version 8 of OFDMReferenceDesign/Applications/Bridge


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Timestamp:
Mar 30, 2010, 9:37:51 AM (12 years ago)
Author:
murphpo
Comment:

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  • OFDMReferenceDesign/Applications/Bridge

    v7 v8  
    2424The code for this application is provided in [source:/ResearchApps/MAC/NOMAC/noMac.c noMAC.c]. The default OFDM Reference Design project includes noMAC as a software project.
    2525
    26 == Timing ==
    27 ''The values below correspond to OFDM Reference Design v14''[[BR]]
    28 
    29 The timing of noMac is defined by the minimum delay between sequential packet transmissions. The idle time between transmissions is imposed by packet and state handling in the noMac application. The figure below illustrates the timing of bak-to-back packet transmissions by noMac.
    30 
    31 [[Image(OFDMReferenceDesign/Applications/Bridge/Benchmarks/Files:noMac_pktTxTiming.png)]]
    32 
    33 This figure assumes the following parameters:
    34  * SISO antenna configuration
    35  * 2 OFDM symbols for channel training per packet
    36  * 24 byte MAC header at QPSK (2 OFDM symbols)
    37  * Full rate modulation of QPSK (12 bytes per OFDM symbol) or 16-QAM (24 bytes per OFDM symbol)
    38  * 1484 byte payloads (1470 byte IP datagram + 14 byte Ethernet header)
    39 
    40 Given this timing, the minimum period for transmitting a new full-length packet is XXµs (for QPSK full rate) or XXµs (for 16-QAM full rate), implying a peak data throughput of 9.31Mbps for QPSK and 15.2Mbps for 16-QAM.
    41 
    4226== Benchmarks ==
    4327Detailed [wiki:OFDMReferenceDesign/Applications/Bridge/Benchmarks/v14 benchmarks] are available for the latest (v14) reference design's noMac implementation.