Polyphase Nonlinear Equalization of Time-Interleaved Analog-to-Digital Converters
Author(s)
Goodman, Joel I.; Miller, Benjamin A.; Herman, Matthew; Raz, Gil; Jackson, Jeffrey
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As the demand for higher data rates increases, commercial analog-to-digital converters (ADCs) are more commonly being implemented with multiple on-chip converters whose outputs are time-interleaved. The distortion generated by time-interleaved ADCs is now not only a function of the nonlinear behavior of the constituent circuitry, but also mismatches associated with interleaving multiple output streams. To mitigate distortion generated by time-interleaved ADCs, we have developed a polyphase NonLinear EQualizer (pNLEQ) which is capable of simultaneously mitigating distortion generated by both the on-chip circuitry and mismatches due to time interleaving. In this paper, we describe the pNLEQ architecture and present measurements of its performance.
Date issued
2009-05Department
Lincoln LaboratoryJournal
IEEE Journal of Selected Topics in Signal Processing
Publisher
Institute of Electrical and Electronics Engineers
Citation
Goodman, J. et al. “Polyphase Nonlinear Equalization of Time-Interleaved Analog-to-Digital Converters.” Selected Topics in Signal Processing, IEEE Journal of 3.3 (2009): 362-373. © 2009 Institute of Electrical and Electronics Engineers
Version: Final published version
Other identifiers
INSPEC Accession Number: 10664321
ISSN
1932-4553
Keywords
time-interleaved analog-to-digital converter (ADC), polynomial filter, nonlinear equalization, nonlinear compensation, multidimensional filter, mismatch distortions, Volterra, compressed sensing