发明名称 |
CORRECTION OF ANALOG DEFECTS IN PARALLEL ANALOG-TO-DIGITAL CONVERTERS, IN PARTICULAR FOR MULTI-STANDARD, SOFTWARE-DEFINED RADIO AND/OR COGNITIVE RADIO APPLICATIONS |
摘要 |
The present invention relates to signal processing in an analog-to-digital converter comprising a time-interleaved multi-channel architecture. According to the invention: digital filtering (H(z)) is applied in each channel, at least to estimate a converter offset error, and a compensation for the offset is applied on the basis of the estimated offset error. Advantageously, it is possible to benefit from the presence of a digital filter (H(z)) that is usually used to filter the quantization noise, such as a comb filter in converters that have sigma/delta modulators, in order to estimate the offset. The same filtering can then be applied in order to also estimate a gain disparity between the different channels. |
申请公布号 |
EP2460275(A2) |
申请公布日期 |
2012.06.06 |
申请号 |
EP20100754359 |
申请日期 |
2010.07.28 |
申请人 |
GROUPE DES ECOLES DE TELECOMMUNICATIONS ECOLE NATIONAL SUPERIEURE DES TELECOMMUNICATIONS |
发明人 |
BEYDOUN, ALI;NGUYEN, VAN TAM;LOUMEAU, PATRICK |
分类号 |
H03M3/00;H03M1/10;H03M1/12 |
主分类号 |
H03M3/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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