Timeline for Fixed point channel model for OFDM system
Current License: CC BY-SA 3.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 15, 2013 at 17:23 | comment | added | Deve | If you're just discarding the LSBs then this is most probably the reason for the bad performance. I co-authored a paper about how to optimally reduce the word width of the IFFT output in an OFDM system. You can download it here: inue.uni-stuttgart.de/publications/pub_2012/… | |
| Apr 15, 2013 at 17:13 | comment | added | Euripedes Rocha Filho | I'm testing with 16b FFT core and truncating the output to 12b, this 12b input -> 16b processing -> 12b output. | |
| Apr 15, 2013 at 17:03 | comment | added | Deve | You're welcome. Do you use an IP core for the IFFT block and if yes, what output width does it have? | |
| Apr 15, 2013 at 16:35 | comment | added | Euripedes Rocha Filho | Thank you @Deve! You're absolutely right! Your thoughts about the results are correct. I'm running some simulation with enough points to take the BER measure but the constellation presents the behaviour you said above. Now I have to realize how to improve the performance. | |
| Apr 15, 2013 at 16:32 | vote | accept | Euripedes Rocha Filho | ||
| Apr 15, 2013 at 14:22 | history | answered | Deve | CC BY-SA 3.0 |