Correction of mismatches in a time-interleaved analog-to-digital converter in an adaptively equalized digital communication receiver

Tsung Heng Tsai*, Paul J. Hurst, Stephen H. Lewis

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

In this paper, techniques to overcome the errors caused by the offset, gain, sample-time, and bandwidth mismatches among time-interleaved analog-to-digital converters in a high-speed baseband digital communication receiver are presented. The errors introduced by these mismatches are corrected using least-mean-square adaptation implemented in digital-signal-processing blocks. Gain, sample-time, and bandwidth mismatches are corrected by modifying the operation of the adaptive receive equalizer itself to minimize the hardware overhead. Simulation results show that the gain, offset, sample-time, and bandwidth mismatches are sufficiently corrected for practical digital communication receivers.

Original languageEnglish
Pages (from-to)307-319
Number of pages13
JournalIEEE Transactions on Circuits and Systems I: Regular Papers
Volume56
Issue number2
DOIs
StatePublished - 2009

Keywords

  • Analog-to-digital conversion
  • Calibration
  • Communication receiver
  • Digital signal processing (DSP)

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