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Adaptive Compensation of Frequency Response Mismatches in High-Resolution Time-Interleaved ADCs using a Low-Resolution ADC and a Time-Varying Filter

by Shahzad Saleem, Christian Vogel
"... Abstract — This paper investigates the adaptive compensation of frequency response mismatches in an M-channel timeinterleaved analog-to-digital converter (TI-ADC) using an extra low-resolution ADC and a time-varying FIR filter. The introduced compensation structure may be used to compensate any line ..."
Abstract - Cited by 9 (5 self) - Add to MetaCart
Abstract — This paper investigates the adaptive compensation of frequency response mismatches in an M-channel timeinterleaved analog-to-digital converter (TI-ADC) using an extra low-resolution ADC and a time-varying FIR filter. The introduced compensation structure may be used to compensate any

A Flexible and Scalable Structure to Compensate Frequency Response Mismatches in Time-interleaved Adcs

by Christian Vogel, Stefan Mendel , 2009
"... In this paper, we present a flexible and scalable structure to compensate frequency response mismatches in time-interleaved analog-to-digital converters (TI-ADCs). The flexibility of the structure allows for designing compensation filters independent of the number of channels that can achieve any de ..."
Abstract - Cited by 15 (11 self) - Add to MetaCart
In this paper, we present a flexible and scalable structure to compensate frequency response mismatches in time-interleaved analog-to-digital converters (TI-ADCs). The flexibility of the structure allows for designing compensation filters independent of the number of channels that can achieve any

A Signal Processing View on Time-Interleaved ADCS

by Christian Vogel , 2010
"... Abstract The idea of time-interleaved ADCs (TI-ADCs) is old, but it took more than 25 years until the requirements on converters and the possibility of advanced digital post correction made this architecture attractive. We investigate time-interleaved ADCs with a focus on the involved signal process ..."
Abstract - Cited by 1 (1 self) - Add to MetaCart
processing. By establishing a discrete-time model of a TI-ADC, we explicitly show that a TI-ADC with mismatches is a time-varying system producing spurious images. This view will help to understand the principles of digital calibration of linear mismatches in TI-ADCs. Currently, time offset mismatches

A review on low-complexity structures and algorithms for the correction of mismatch errors in time-interleaved ADCs

by Christian Vogel, Matthias Hotz, Shahzad Saleemz, Katharina Hausmairy, Michael Soudany - Proc. IEEE Int. Northeast Workshop Circuits and Systems (NEWCAS) Conf , 2012
"... Abstract—In this paper we review the progress in the design of low-complexity digital correction structures and algorithms for time-interleaved ADCs over the last five years. We devise a discrete-time model, state the design problem, and finally derive the algorithms and structures. In particular, w ..."
Abstract - Cited by 4 (3 self) - Add to MetaCart
, we discuss efficient algorithms to design time-varying correction filters as well as iterative structures utilizing polynomial based filters. Finally, we give an outlook to future research questions. I.

On the compensation of magnitude response mismatches in m-channel time-interleaved ADCs

by Stefan Mendel, Christian Vogel - in IEEE Int. Symp. Circuits Syst., 2007 (ISCAS 2007
"... Abstract — Parallel time-interleaved analog-to-digital converters (TI-ADCs) are an attractive architecture to realize low-power and high-speed data conversion. As a drawback of such converters, mismatches between the channels impair their performance, e.g., the spurious free dynamic range (SFDR). On ..."
Abstract - Cited by 4 (3 self) - Add to MetaCart
Abstract — Parallel time-interleaved analog-to-digital converters (TI-ADCs) are an attractive architecture to realize low-power and high-speed data conversion. As a drawback of such converters, mismatches between the channels impair their performance, e.g., the spurious free dynamic range (SFDR

Modeling of time-interleaved ADCs with nonlinear hybrid filter banks

by Christian Vogel, Gernot Kubin , 2005
"... In this paper, we model time-interleaved analog-to-digital converters (TIADCs) with nonlinear hybrid filter banks (NHFBs), which greatly unifies and simplifies the analysis of TIADCs. The input/output relation of such a nonlinear hybrid filter bank can be used to describe combined offset, gain, aper ..."
Abstract - Cited by 7 (5 self) - Add to MetaCart
In this paper, we model time-interleaved analog-to-digital converters (TIADCs) with nonlinear hybrid filter banks (NHFBs), which greatly unifies and simplifies the analysis of TIADCs. The input/output relation of such a nonlinear hybrid filter bank can be used to describe combined offset, gain

A novel iterative structure for online calibration of M-channel time-interleaved ADCs

by K. M. Tsui, S. C. Chan - IEEE Transactions on Instrumentation and Measurement , 2014
"... Abstract — This paper proposes a computationally efficient calibration structure for online estimation and compensation of offset, gain and frequency response mismatches in M-channel time-interleaved (TI) analog-to-digital converters (ADCs). The basic idea of the proposed approach is to reserve some ..."
Abstract - Cited by 2 (0 self) - Add to MetaCart
Abstract — This paper proposes a computationally efficient calibration structure for online estimation and compensation of offset, gain and frequency response mismatches in M-channel time-interleaved (TI) analog-to-digital converters (ADCs). The basic idea of the proposed approach is to reserve

Using collaborative filtering to weave an information tapestry

by David Goldberg, David Nichols, Brian M. Oki, Douglas Terry - Communications of the ACM , 1992
"... predicated on the belief that information filtering can be more effective when humans are involved in the filtering process. Tapestry was designed to support both content-based filtering and collaborative filtering, which entails people collaborating to help each other perform filtering by recording ..."
Abstract - Cited by 945 (4 self) - Add to MetaCart
predicated on the belief that information filtering can be more effective when humans are involved in the filtering process. Tapestry was designed to support both content-based filtering and collaborative filtering, which entails people collaborating to help each other perform filtering

BLOCK PROCESSINGWITH ITERATIVE CORRECTION FILTERS FOR TIME-INTERLEAVED ADCS

by Matthias Hotz, Christian Vogel
"... This paper presents a systematic approach to block processing with iterative correction filters for time-interleaved analog-to-digital con-verters (TI-ADCs). TI-ADCs consist of several channels and can significantly increase the achievable sampling rate, but suffer from mismatches among the channels ..."
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-lighted. Index Terms — time-varying filter, block processing, MIMO, Farrow structure, mismatch correction, time-interleaved ADC.

Joint Channel and Mismatch Correction for OFDM Reception with Time-interleaved ADCs

by Upamanyu Madhow, Munkyo Seo, Mark Rodwell - Towards Mostly Digital MultiGigabit Transceiver Architectures” , IEEE GLOBECOM, Nov 2008
"... Abstract — Time-interleaved (TI) analog-to-digital converters (ADCs) are a promising architecture for realizing the highspeed ADCs required to implement “mostly digital ” receivers for emerging multiGigabit communication systems. Mismatch between the parallel ADCs comprising a TI-ADC is a fundamenta ..."
Abstract - Cited by 4 (4 self) - Add to MetaCart
Abstract — Time-interleaved (TI) analog-to-digital converters (ADCs) are a promising architecture for realizing the highspeed ADCs required to implement “mostly digital ” receivers for emerging multiGigabit communication systems. Mismatch between the parallel ADCs comprising a TI-ADC is a
Results 1 - 10 of 57,996