| 发明名称 |
Coherent averaging for measuring traveling wave tube amplifier nonlinearity |
| 摘要 |
<p>A method and system provide the ability to measure a transmission performance characteristic. A signal is received and demodulated 1302. An ideal signal 1320 is generated 1304 from the demodulated signal. The received signal is coherently averaged 1324/1326 to reduce noise. The performance characteristic is the estimated TWTA nonlinearity from a difference between the coherently averaged ideal signal and received signal. <IMAGE></p> |
| 申请公布号 |
EP1523103(A1) |
申请公布日期 |
2005.04.13 |
| 申请号 |
EP20040256234 |
申请日期 |
2004.10.08 |
| 申请人 |
THE DIRECTV GROUP, INC. |
发明人 |
CHEN, ERNEST C. |
| 分类号 |
H03F3/58;H03F;H04B1/10;H04B7/185;H04B17/00;H04L27/227;H04L27/36;H04L27/38;H04N7/24;(IPC1-7):H04B1/10 |
主分类号 |
H03F3/58 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
