Digital correction of frequency response mismatches in 2-channel time-interleaved ADCs using adaptive I/Q signal processing

Simran Singh; Mikko Valkama; Michael Epp; Lauri Anttila; Wolfgang Schlecker; Elmar Ingber

doi:10.1007/s10470-014-0476-9

Digital correction of frequency response mismatches in 2-channel time-interleaved ADCs using adaptive I/Q signal processing

Simran Singh^*
, Mikko Valkama
, Michael Epp
, Lauri Anttila
, Wolfgang Schlecker
, Elmar Ingber

^*Corresponding author for this work

Research output: Contribution to journal › Article › Scientific › peer-review

7 Citations (Scopus)

Abstract

A novel adaptive compensation architecture for the frequency response mismatch of 2-channel time-interleaved ADC (TI-ADC) is proposed for developing high-performance self-adaptive systems. The proposed approach overcomes the existing methods in the sense that the TI-ADC mismatch identification can be performed without allocating a region where only the TI-ADC mismatch spurs are present. This is accomplished via mapping the TI-ADC problem into an I/Q mismatch problem which allows deploying complex statistical signal processing. As proof of concept, the compensation architecture is demonstrated and tested on a 16-bit TI-ADC measured hardware data.

Original language	English
Pages (from-to)	543-555
Number of pages	13
Journal	Analog Integrated Circuits and Signal Processing
Volume	82
Issue number	3
DOIs	https://doi.org/10.1007/s10470-014-0476-9
Publication status	Published - 2015
Publication type	A1 Journal article-refereed

Keywords

Circularity
Complex I/Q signal processing
Digitally assisted analog (DASA)
Frequency response mismatch identification
Time-interleaved ADC

Publication forum classification

Publication forum level 1

ASJC Scopus subject areas

Surfaces, Coatings and Films
Hardware and Architecture
Signal Processing

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10.1007/s10470-014-0476-9

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title = "Digital correction of frequency response mismatches in 2-channel time-interleaved ADCs using adaptive I/Q signal processing",

abstract = "A novel adaptive compensation architecture for the frequency response mismatch of 2-channel time-interleaved ADC (TI-ADC) is proposed for developing high-performance self-adaptive systems. The proposed approach overcomes the existing methods in the sense that the TI-ADC mismatch identification can be performed without allocating a region where only the TI-ADC mismatch spurs are present. This is accomplished via mapping the TI-ADC problem into an I/Q mismatch problem which allows deploying complex statistical signal processing. As proof of concept, the compensation architecture is demonstrated and tested on a 16-bit TI-ADC measured hardware data.",

keywords = "Circularity, Complex I/Q signal processing, Digitally assisted analog (DASA), Frequency response mismatch identification, Time-interleaved ADC",

author = "Simran Singh and Mikko Valkama and Michael Epp and Lauri Anttila and Wolfgang Schlecker and Elmar Ingber",

year = "2015",

doi = "10.1007/s10470-014-0476-9",

language = "English",

volume = "82",

pages = "543--555",

journal = "Analog Integrated Circuits and Signal Processing",

issn = "0925-1030",

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T1 - Digital correction of frequency response mismatches in 2-channel time-interleaved ADCs using adaptive I/Q signal processing

AU - Singh, Simran

AU - Valkama, Mikko

AU - Epp, Michael

AU - Anttila, Lauri

AU - Schlecker, Wolfgang

AU - Ingber, Elmar

PY - 2015

Y1 - 2015

N2 - A novel adaptive compensation architecture for the frequency response mismatch of 2-channel time-interleaved ADC (TI-ADC) is proposed for developing high-performance self-adaptive systems. The proposed approach overcomes the existing methods in the sense that the TI-ADC mismatch identification can be performed without allocating a region where only the TI-ADC mismatch spurs are present. This is accomplished via mapping the TI-ADC problem into an I/Q mismatch problem which allows deploying complex statistical signal processing. As proof of concept, the compensation architecture is demonstrated and tested on a 16-bit TI-ADC measured hardware data.

AB - A novel adaptive compensation architecture for the frequency response mismatch of 2-channel time-interleaved ADC (TI-ADC) is proposed for developing high-performance self-adaptive systems. The proposed approach overcomes the existing methods in the sense that the TI-ADC mismatch identification can be performed without allocating a region where only the TI-ADC mismatch spurs are present. This is accomplished via mapping the TI-ADC problem into an I/Q mismatch problem which allows deploying complex statistical signal processing. As proof of concept, the compensation architecture is demonstrated and tested on a 16-bit TI-ADC measured hardware data.

KW - Circularity

KW - Complex I/Q signal processing

KW - Digitally assisted analog (DASA)

KW - Frequency response mismatch identification

KW - Time-interleaved ADC

U2 - 10.1007/s10470-014-0476-9

DO - 10.1007/s10470-014-0476-9

M3 - Article

AN - SCOPUS:84925535772

SN - 0925-1030

VL - 82

SP - 543

EP - 555

JO - Analog Integrated Circuits and Signal Processing

JF - Analog Integrated Circuits and Signal Processing

IS - 3

ER -

Digital correction of frequency response mismatches in 2-channel time-interleaved ADCs using adaptive I/Q signal processing

Abstract

Keywords

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ASJC Scopus subject areas

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