Changes between Version 6 and Version 7 of OFDMReferenceDesign/Applications/Bridge


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Timestamp:
Dec 1, 2009, 4:01:19 PM (14 years ago)
Author:
murphpo
Comment:

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  • OFDMReferenceDesign/Applications/Bridge

    v6 v7  
    2323
    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.
     25
     26== Timing ==
     27''The values below correspond to OFDM Reference Design v14''[[BR]]
     28
     29The 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
     33This 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
     40Given 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
     42== Benchmarks ==
     43Detailed [wiki:OFDMReferenceDesign/Applications/Bridge/Benchmarks/v14 benchmarks] are available for the latest (v14) reference design's noMac implementation.