| Joint estimation of channel and carrier frequency offset from the emitter, in an uplink OFDMA system Recent countries visiting this post |  |
 | 8 | United States |
 | 4 | Germany |
 | 3 | |
 | 1 | United Kingdom |
 | 1 | China |
| Joint estimation of channel and carrier frequency offset from the emitter, in an uplink OFDMA system Recent countries visiting this post | |
| 8 | United States |
| 4 | Germany |
| 3 | |
| 1 | United Kingdom |
| 1 | China |