Timing mismatch compensation in TI-ADCS using Bayesian approach

Hesam Araghi, Mohammad Ali Akhaee, Arash Amini
2015 2015 23rd European Signal Processing Conference (EUSIPCO)  
A TI-ADC is a circuitry to achieve high sampling rates by passing the signal and its shifted versions through a number of parallel ADCs with lower sampling rates. When the time shifts between the C channels of a TI-ADC are properly tuned, the aggregate of the obtained samples is equivalent to that of a single ADC with C-times the sampling rate. However, the performance of a TI-ADC can be seriously degraded under interchannel timing mismatch. As this nonideality cannot be avoided in practice, we
more » ... ded in practice, we need to first estimate the mismatch value, and then, compensate it. In this paper, by adopting a stochastic bandlimited signal model we study the signal recovery problem from the samples of a TI-ADC affected by timing mismatch and jitter. In particular, we derive the Bayesian model and implement the minimum mean square error (MMSE) estimator. The latter is achieved by means of Gibbs sampling technique.
doi:10.1109/eusipco.2015.7362612 dblp:conf/eusipco/AraghiAA15 fatcat:p4ii3bfe6nhlnav4ngwym2ovjm