| | 2 | |
| | 3 | == OFDM Reference Design v12.1 (2009-Apr-15) == |
| | 4 | The code and models for this design correspond to [source:/@1182 svn rev 1182]. |
| | 5 | [[BR]] |
| | 6 | This project requires the latest versions of the Xilinx tools (ISE 10.1.03 + IP2, EDK 10.1.03, Sysgen 10.1.3.1386). |
| | 7 | [[BR]] |
| | 8 | Download the full XPS project: [http://warp.rice.edu/bigFiles/OFDM_ReferenceDesign_v12_1.zip OFDM_ReferenceDesign_v12_1.zip] (65 MB) |
| | 9 | |
| | 10 | '''Hardware Changes''' |
| | 11 | * Updated warp_timer hardware to use time slots during carrier sensing mode. The slot size can be configured to any number of clock cycles (including 1, effectively disabling slots). The timer interval is defined by slotCount- the number of time slots which pass before expiration. A slot will only decrement if the medium is completely idle during the slot. This behavior mimics the backoff mechanism in 802.11. |
| | 12 | * New warp_timer also includes 8 timers. The CSMA design uses 3 (backoff, timeout, user I/O). The remaining 5 are free for user applications. The slot count and slot length is configured per-timer. |
| | 13 | |
| | 14 | '''Software Changes''' |
| | 15 | * Updated WARPPHY and WARPMAC for compatibility with new timer's registers. |
| | 16 | |
| | 17 | ---- |
