Changes between Version 22 and Version 23 of OFDM/MIMO/Docs/AutoResponse


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Timestamp:
Aug 29, 2009, 3:51:10 PM (15 years ago)
Author:
murphpo
Comment:

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  • OFDM/MIMO/Docs/AutoResponse

    v22 v23  
    1 = OFDM Auto Response System =
     1= OFDM PHY Auto Response System =
    22
    3 The OFDM core includes a subsystem which can automatically transmit a packet in response to a received packet. This behavior is ideal for implementing MAC protocols which require responses at fast time scales (like RTS-CTS or DATA-ACK exchanges). Both the conditions for responding and contents of the response packet are programmable from software. While this system is implemented in FPGA fabric, its behavior is programmed entirely by C code. Think of it as a MAC "accelerator"- MAC behaviors are specified in code but executed by dedicated hardware resources in the PHY.
     3The OFDM core includes a subsystem which can automatically transmit a packet in response to a received packet. Automatically triggerd transmissions occur with very short and deterministic turnaround times.
     4
     5This behavior is ideal for implementing MAC protocols which require responses at fast time scales (like RTS-CTS or DATA-ACK exchanges). Both the conditions for responding and contents of the response packet are programmable from software. While this system is implemented in FPGA fabric, its behavior is programmed entirely by C code. Think of it as a MAC "accelerator"- MAC behaviors are specified in code but executed by dedicated hardware resources in the PHY.
    46
    57The auto response hardware consists of three parts- '''match units''', '''actors''' and the '''header translator'''.