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Adaptive Gain and Delay Mismatch Cancellation for LINC Transmitter
Abstract : Linear amplification with Nonlinear Component (LINC) transmitter architecture is an efficient solution for high efficiency amplification of signals. Nonetheless, this solution suffers both from gain impairment and delay mismatch between the two signal paths. Indeed, a mismatch in propagation time between the paths degrades the quality of the transmit signal but also disrupts the convergence of the gain correction algorithm resulting in a degradation of its performance. In this paper, we present an adaptive algorithm based on a gradient descent formulation for the identification and correction of these delays. We also demonstrate its effectiveness when applied prior to the gain adjustment procedure. The identification approach is preferred here, to ensure monitoring facilities.
Cited literature [12 references]
https://hal-upec-upem.archives-ouvertes.fr/hal-00621968
Contributor : Jean-François Bercher <>
Submitted on : Thursday, March 17, 2016 - 9:32:00 AM
Last modification on : Wednesday, February 26, 2020 - 7:06:07 PM
Document(s) archivé(s) le : Sunday, November 13, 2016 - 8:00:12 PM
Contributor : Jean-François Bercher <>
Submitted on : Thursday, March 17, 2016 - 9:32:00 AM
Last modification on : Wednesday, February 26, 2020 - 7:06:07 PM
Document(s) archivé(s) le : Sunday, November 13, 2016 - 8:00:12 PM
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Linc_springer_2009.pdf
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