= [wiki:OFDMReferenceDesign OFDM Reference Design] History =

== OFDM Reference Design v09 (2008-Jun-11) ==
 * Download the XPS project: [http://warp.rice.edu/bigFiles/OFDM_ReferenceDesign_v09.zip OFDM_ReferenceDesign_v09.zip]
 * Built using cores and code as of repository [source:/@906 revision 906]
 * This version assumes a different location for TxDCO calibration information in the EEPROM of the radios. Please re-calibrate before running (instructions are [wiki:HardwareUsersGuides/RadioBoard_v1.4/Usage/TxDCOffset here]


 * Updated [source:/PlatformSupport/WARPMAC/ warpmac/warpphy] & [source:/ResearchApps/MAC/CSMAMAC/ csmamac]
   * Header interrupts are used to pipeline receive processions (i.e. an ACK is constructed and loaded into a PHY before the packet is even completely received)
   * Rx Data to Tx ACK turn-around time reduced from 80 microseconds to 30 microseconds
   * By default, left and right push buttons use left and right radios respectively (only for MIMO WARP kits)
   * Numerous tweaks to MAC timing parameters

== OFDM Reference Design v08 (2008-Feb-08) ==
 * Download the XPS project: [http://warp.rice.edu/bigFiles/OFDM_ReferenceDesign_v08.zip OFDM_ReferenceDesign_v08.zip]
 * Built using cores and code as of repository [source:/@834 revision 834]
 * Updated [source:/ResearchApps/PHY/MIMO_OFDM OFDM PHY]
   * Added support for header-only packets (like ACKs); numFullRateSymbols can be zero
   * Last two bytes of header are now a 16-bit CRC of just the header
   * Added new interrupt output for good header; asserts for non-header-only packets when header CRC passes
   * Added TxDone interrupt output; asserts when a packet transmission finishes
   * Fixed bugs in dynamic modulation mask usage
 * Updated [source:/PlatformSupport/WARPMAC/ warpmac/warpphy] & [source:/ResearchApps/MAC/CSMAMAC/ csmamac]
   * Changes to support new PHY features
   * Added TxDone & GoodHeader interrupt handlers; unused in this version
   * Added lots of comments to the source code to better explain various MAC/PHY interactions