On Blind Identification of Gain and Timing Mismatches in Time-Interleaved Analog-to-Digital Converters
نویسندگان
چکیده
Gain and timing mismatches in a time-interleaved analog-todigital converter (TI-ADC) cause spurious images in its output spectrum thus effecting its performance. In this paper. we present an efficient digital blind identification structure to adaptively estimate gain and timing mismatches by using the filtered-error least-mean square (FxLMS) algorithm. The identification of mismatches helps in the removal of spurious images from the TI-ADC output spectrum and thus increases the signal-to-noise ratio (SNR). We demonstrate the performance of this structure through numerical simulations.
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