Title
Blocker-Tolerant RF-to-Digital Linearization With a Very Nonlinear Auxiliary Path
Abstract
This paper introduces a new linearization technique based on signal-component cancellation to remove the third-order lumped nonlinearities from the entire receiver chain using a nonlinear auxiliary path. The paper shows that the solution performance improves when the auxiliary path becomes more nonlinear, a rather counter-intuitive property of the proposed technique with several practical implications. The signal-component cancellation uses two coefficients that are found adaptively with a novel two-step LMS algorithm in the digital domain. In contrast with previous prominent approaches based on an auxiliary path, the proposed linearization has two significant advantages: 1) it does not estimate the signal nonlinearities used in other techniques for cancellation, and 2) upon convergence of the adaptive algorithm, the digital solution is input-signal independent and therefore is static in steady-state.
Year
DOI
Venue
2019
10.1109/MWSCAS.2019.8885260
Midwest Symposium on Circuits and Systems Conference Proceedings
Keywords
Field
DocType
Intermodulation,IIP2,IIP3,Linearization,Harmonic Cancellation,RF Front-end,Adaptive Linearization,Blocker-Tolerant Receiver
Convergence (routing),Least mean squares filter,Baseband,Nonlinear system,Control theory,Computer science,Radio frequency,Adaptive algorithm,Linearization
Conference
ISSN
Citations 
PageRank 
1548-3746
0
0.34
References 
Authors
0
4
Name
Order
Citations
PageRank
Julian Camilo Gomez Diaz100.68
Amir Tofighi Zavareh222.04
Lester Boampong300.34
Sebastian Hoyos423429.24