| 发明名称 |
Mismatch profile |
| 摘要 |
A system can include a signal image correlator receives a discrete frequency domain representation of a signal tone in an interleaved analog-to-digital (IADC) signal and an image of the signal tone in the discrete frequency domain representation of the IADC signal and determines a correlation between the signal tone and the image of the signal tone, a power of the signal tone and a power of the image of the signal tone. The system can also include a frequency domain estimator that determines an instantaneous frequency domain mismatch profile estimate based on the correlation between the signal tone and the image of the signal tone. The system can further include an averaging filter that averages the instantaneous frequency domain mismatch profile estimate over time to provide a frequency domain mismatch profile estimate. |
| 申请公布号 |
US9184762(B2) |
申请公布日期 |
2015.11.10 |
| 申请号 |
US201514656205 |
申请日期 |
2015.03.12 |
| 申请人 |
TEXAS INSTRUMENTS INCORPORATED |
发明人 |
Ramakrishnan Sthanunathan;Venkatraman Sashidharan;Potty Sreenath Narayanan;Chomal Sunil;Viswanathan Nagarajan;Tangudu Jawaharlal |
| 分类号 |
H03M1/10;H03M1/36;H03M1/08;H03M1/06;H03M1/12 |
主分类号 |
H03M1/10 |
| 代理机构 |
|
代理人 |
Cooper Alan A. R.;Cimino Frank D. |
| 主权项 |
1. A system comprising:
a signal image correlator receives a discrete frequency domain representation of a signal tone in an interleaved analog-to-digital (IADC) signal and an image of the signal tone in the discrete frequency domain representation of the IADC signal and determines a correlation between the signal tone and the image of the signal tone, a power of the signal tone and a power of the image of the signal tone; a frequency domain estimator determines an instantaneous frequency domain mismatch profile estimate based on the correlation between the signal tone and the image of the signal tone; an averaging filter averages the instantaneous frequency domain mismatch profile estimate over time to provide a frequency domain mismatch profile estimate; and a time domain converter converts the frequency domain mismatch profile estimate into the time domain. |
| 地址 |
Dallas TX US |
