Blind Calibration of Timing Skew in Time-Interleaved Analog-to-Digital Converters
Blind Calibration of Timing Skew in Time-Interleaved Analog-to-Digital Converters
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DOI：
10.1109/jstsp.2009.2020269
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发表时间：
2009-05
影响因子：
7.5
通讯作者：
Vijay Divi;G. Wornell
中科院分区：
文献类型：
--
作者：
Vijay Divi;G. Wornell
时间交错模数转换器的性能通常会因时序失配错误而显着降低。我们开发了对此类转换器进行盲校准的方法，即估计未知的时间偏差参数并根据这些估计执行信号重建。这些方法的复杂性较低，并且允许在具有大量转换器的系统中进行精确校准，前提是偏差的幅度足够小。我们还提出了校准增益失配的修改以及自适应顺序实施方法。提供性能和复杂性分析以支持该方法的可行性。
The performance of time-interleaved analog-to-digital converters is often significantly degraded by timing mismatch errors. We develop methods for performing blind calibration of such converters, i.e., for estimating the unknown time-skew parameters and for performing signal reconstruction from these estimates. The methods are low in complexity and allow for accurate calibration in systems with large numbers of converters, provided that the skews are sufficiently small in magnitude. We also present modifications to calibrate gain mismatch as well as adaptive sequential methods of implementation. Performance and complexity analysis is provided to support the viability of the methods.