DSP oriented Implementation of a Feedforward Power Amplifier Linearizer

Sascha Burglechner; Andreas Springer; Ali Shahed; Mikko Valkama; Gernot Hueber

doi:10.1109/ISCAS.2009.5118115

DSP oriented Implementation of a Feedforward Power Amplifier Linearizer

Sascha Burglechner
, Andreas Springer
, Ali Shahed
, Mikko Valkama
, Gernot Hueber

Institute for Communications Engineering and RF-Systems

Research output: Chapter in Book/Report/Conference proceeding › Conference proceedings › peer-review

Abstract

In this contribution we introduce a new digital signal processing (DSP)-oriented implementation of a feedforward linearizer. The intermodulation distortion (IMD) signal is regenerated entirely in the digital baseband which gives better control over the linearization process and also improves the efficiency of the overall amplifier. A new scheme to estimate the parameters of the proposed feedforward linearizer is presented which decouples the parameters of the signal and error cancellation loop. We have verified the new DSP oriented feedforward linearizer by means of simulations in the presence of component impairments like, e.g., IQ mismatch. Initial measurements results in a laboratory setup show a reduction of the adjacent channel power of approximately 15 to 20 dB.

Original language	English
Title of host publication	Proc. of the IEEE International Symposium on Circuits and Systems (ISCAS 2009)
Editors	IEEE
Pages	1755-1758
Number of pages	4
DOIs	https://doi.org/10.1109/ISCAS.2009.5118115
Publication status	Published - 2009

Publication series

Name	Proceedings - IEEE International Symposium on Circuits and Systems
ISSN (Print)	0271-4310

Fields of science

202037 Signal processing

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10.1109/ISCAS.2009.5118115

Cite this

Burglechner, S., Springer, A., Shahed, A., Valkama, M., & Hueber, G. (2009). DSP oriented Implementation of a Feedforward Power Amplifier Linearizer. In IEEE (Ed.), Proc. of the IEEE International Symposium on Circuits and Systems (ISCAS 2009) (pp. 1755-1758). Article 5118115 (Proceedings - IEEE International Symposium on Circuits and Systems). https://doi.org/10.1109/ISCAS.2009.5118115

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title = "DSP oriented Implementation of a Feedforward Power Amplifier Linearizer",

abstract = "In this contribution we introduce a new digital signal processing (DSP)-oriented implementation of a feedforward linearizer. The intermodulation distortion (IMD) signal is regenerated entirely in the digital baseband which gives better control over the linearization process and also improves the efficiency of the overall amplifier. A new scheme to estimate the parameters of the proposed feedforward linearizer is presented which decouples the parameters of the signal and error cancellation loop. We have verified the new DSP oriented feedforward linearizer by means of simulations in the presence of component impairments like, e.g., IQ mismatch. Initial measurements results in a laboratory setup show a reduction of the adjacent channel power of approximately 15 to 20 dB.",

author = "Sascha Burglechner and Andreas Springer and Ali Shahed and Mikko Valkama and Gernot Hueber",

year = "2009",

doi = "10.1109/ISCAS.2009.5118115",

language = "English",

isbn = "978-1-4244-3827-3",

series = "Proceedings - IEEE International Symposium on Circuits and Systems",

pages = "1755--1758",

editor = "IEEE",

booktitle = "Proc. of the IEEE International Symposium on Circuits and Systems (ISCAS 2009)",

}

Burglechner, S, Springer, A, Shahed, A, Valkama, M & Hueber, G 2009, DSP oriented Implementation of a Feedforward Power Amplifier Linearizer. in IEEE (ed.), Proc. of the IEEE International Symposium on Circuits and Systems (ISCAS 2009)., 5118115, Proceedings - IEEE International Symposium on Circuits and Systems, pp. 1755-1758. https://doi.org/10.1109/ISCAS.2009.5118115

DSP oriented Implementation of a Feedforward Power Amplifier Linearizer. / Burglechner, Sascha; Springer, Andreas; Shahed, Ali et al.
Proc. of the IEEE International Symposium on Circuits and Systems (ISCAS 2009). ed. / IEEE. 2009. p. 1755-1758 5118115 (Proceedings - IEEE International Symposium on Circuits and Systems).

Research output: Chapter in Book/Report/Conference proceeding › Conference proceedings › peer-review

TY - GEN

T1 - DSP oriented Implementation of a Feedforward Power Amplifier Linearizer

AU - Burglechner, Sascha

AU - Springer, Andreas

AU - Shahed, Ali

AU - Valkama, Mikko

AU - Hueber, Gernot

PY - 2009

Y1 - 2009

N2 - In this contribution we introduce a new digital signal processing (DSP)-oriented implementation of a feedforward linearizer. The intermodulation distortion (IMD) signal is regenerated entirely in the digital baseband which gives better control over the linearization process and also improves the efficiency of the overall amplifier. A new scheme to estimate the parameters of the proposed feedforward linearizer is presented which decouples the parameters of the signal and error cancellation loop. We have verified the new DSP oriented feedforward linearizer by means of simulations in the presence of component impairments like, e.g., IQ mismatch. Initial measurements results in a laboratory setup show a reduction of the adjacent channel power of approximately 15 to 20 dB.

AB - In this contribution we introduce a new digital signal processing (DSP)-oriented implementation of a feedforward linearizer. The intermodulation distortion (IMD) signal is regenerated entirely in the digital baseband which gives better control over the linearization process and also improves the efficiency of the overall amplifier. A new scheme to estimate the parameters of the proposed feedforward linearizer is presented which decouples the parameters of the signal and error cancellation loop. We have verified the new DSP oriented feedforward linearizer by means of simulations in the presence of component impairments like, e.g., IQ mismatch. Initial measurements results in a laboratory setup show a reduction of the adjacent channel power of approximately 15 to 20 dB.

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DO - 10.1109/ISCAS.2009.5118115

M3 - Conference proceedings

SN - 978-1-4244-3827-3

T3 - Proceedings - IEEE International Symposium on Circuits and Systems

SP - 1755

EP - 1758

BT - Proc. of the IEEE International Symposium on Circuits and Systems (ISCAS 2009)

A2 - IEEE, null

ER -

DSP oriented Implementation of a Feedforward Power Amplifier Linearizer

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