A Frequency Domain Method for Blind Identification of Timing Mismatches in Time-Interleaved ADCs

Author

Vogel, Christian

Author_Institution

Christian Doppler Lab. for Nonlinear Signal Process., Graz Univ. of Technol.

fYear

2006

fDate

Nov. 2006

Firstpage

45

Lastpage

48

Abstract

The performance of time-interleaved ADCs (TI-ADCs) mainly suffers from timing mismatches. We introduce an accurate blind timing mismatch identification for bandlimited, oversampled input signals, which is based on a frequency relation between the input signal and the sampled output signal and the fact that timing mismatches are generally small compared to the sampling period. We provide a detailed derivation of the method and discuss questions of implementation and complexity. Finally, we show the potential of the method through numerical simulations

Keywords

analogue-digital conversion; blind source separation; frequency-domain analysis; signal sampling; timing; blind identification; blind timing mismatch identification; frequency domain method; oversampled input signals; time-interleaved ADC; timing mismatches; Analog-digital conversion; Bandwidth; Frequency domain analysis; Laboratories; Numerical simulation; Oral communication; Sampling methods; Signal processing; Signal processing algorithms; Timing;

fLanguage

English

Publisher

ieee

Conference_Titel

Norchip Conference, 2006. 24th

Conference_Location

Linkoping

Print_ISBN

1-4244-0772-9

Type

conf

DOI

10.1109/NORCHP.2006.329241

Filename

4126944