Paper Info
Title
Efficient signal reconstruction scheme for time-interleaved ADCs
Abstract
Time-interleaved analog-to-digital converters (ADCs) exhibit offset, gain, and time-skew errors due to channel mismatches. The time skews give rise to a nonuniformly sampled signal instead of the desired uniformly sampled signal. This introduces the need for a digital signal reconstructor that takes the “nonuniform samples” and generates the “uniform samples”. In the general case, the time skews are frequency dependent, in which case a generalization of nonuniform sampling applies. When the bandwidth of a digital reconstructor approaches the whole Nyquist band, the computational complexity may become prohibitive. This paper introduces a new scheme with reduced complexity. The idea stems from recent multirate-based efficient realizations of linear and time-invariant system . However, a time-interleaved ADC (without correction) is a time-varying system which means that these multirate-based techniques cannot be used straightforwardly but need to be appropriately analyzed and extended for this context.
Year
DOI
Venue
2012
10.1109/NEWCAS.2012.6329030
NEWCAS
Keywords
Field
DocType
analogue-digital conversion,computational complexity,signal reconstruction,signal sampling,nyquist band,digital signal reconstructor,linear invariant systems,multirate-based efficient realizations,nonuniform samples,signal reconstruction scheme,time-interleaved adc,time-interleaved analog-to-digital converters,time-invariant systems,time-skew errors,uniform samples,bandwidth,nonuniform sampling,finite impulse response filter,polynomials
Digital signal,Sampling (signal processing),Communication channel,Electronic engineering,Bandwidth (signal processing),Nyquist–Shannon sampling theorem,Signal reconstruction,Mathematics,Computational complexity theory,Nonuniform sampling
Conference
ISBN
Citations 
PageRank 
978-1-4673-0858-8
1
0.41
References 
Authors
6
2
Name
Order
Citations
PageRank
Kalidas Muralidharan Pillai, A.110.75
Håkan Johansson250565.36