Estimation and Correction of Gain Mismatch and Timing Error in Time-Interleaved ADCs Based on DFT

Metrology and Measurement Systems

Lianping Guo¹  Zhigang Wang¹  Shulin Tian¹ 

关键词: correction;    estimation;    gain mismatch;    time-interleaved analog-to-digital converter;    timing error;   

DOI  :  10.2478/mms-2014-0045

来源: Versita

【 摘 要 】

Time-interleaved analog-to-digital converter (ADC) architecture is crucial to increase the maximum sample rate. However, offset mismatch, gain mismatch, and timing error between time-interleaved channels degrade the performance of time-interleaved ADCs. This paper focuses on the gain mismatch and timing error. Techniques based on Discrete Fourier Transform (DFT) for estimating and correcting gain mismatch and timing error in an M-channel ADC are depicted. Numerical simulations are used to verify the proposed estimation and correction algorithm.

【 授权许可】

Unknown