An efficient blind calibration method for nonlinearity mis-matches in <i>M</i>-channel TIADCs

DOI Web Site 被引用文献6件 参考文献12件
  • Liu Xiangyu
    College of Electronic Science and Engineering, National University of Defense Technology
  • Xu Hui
    College of Electronic Science and Engineering, National University of Defense Technology
  • Liu Husheng
    College of Electronic Science and Engineering, National University of Defense Technology
  • Wang Yinan
    College of Electronic Science and Engineering, National University of Defense Technology

抄録

<p>As gain, offset, and timing mismatches, nonlinearity mismatches also contribute to spurious components which deteriorate TIADC’s performance. This paper proposes an efficient blind calibration method for nonlinearity mismatches in M-channel TIADCs. A modified model for nonlinearity mismatches is established by exploiting binary Hadamard transform (BHT) and differentiator. The calibration is composed of two stages—mismatches compensation and coefficients identification. The principle of mismatches compensation is to reconstruct estimations of the mismatches-induced spurious components and subtract them from the original TIADC’s output. The coefficients identification is performed based on filtered-x least mean square (FxLMS) algorithm. By using improved model and calibration algorithm, the proposed method consumes less computational resource according to the complexity comparison. To tackle the 4-order nonlinearity mismatches in an 16-channel TIADC, the proposed method consumes 23% fewer multipliers than the previous work. Simulation results reveal that both effective resolution and dynamic range improve a lot after calibration.</p>

収録刊行物

  • IEICE Electronics Express

    IEICE Electronics Express 14 (11), 20170468-20170468, 2017

    一般社団法人 電子情報通信学会

被引用文献 (6)*注記

もっと見る

参考文献 (12)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ