Performance of mobile OFDM systems over time-varying non-linearities with memory

Alexander Beremiz Hilario Tacuri; José Mauro Fortes

doi:10.1109/ISWCS.2014.6933316

Performance of mobile OFDM systems over time-varying non-linearities with memory

Alexander Beremiz Hilario Tacuri, José Mauro Fortes

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

Abstract

The performance of modern communications transmitters utilizing multi-carrier modulation techniques is highly sensitive to non-linear distortions arising mainly from the highpower amplifier (HPA). The increase in symbol duration makes the system more sensitive to time-varying channels. In addition, the wideband characteristics of multi-carrier signals result in frequency-dependent distortions, typically know as memory effects. This paper presents analytical expressions that could be used to evaluate the impact of the distortions induced by time-varying non-linearities with memory on the BER performance of a multi-carrier signal such as the orthogonal frequency division multiplexing (OFDM). The time-varying non-linearity with memory is modeled by a time-varying Volterra Series. The resulting mathematical expressions are applied to an specific situation, allowing for a quantitative evaluation of the system performance degradation.

Original language	English
Title of host publication	2014 11th International Symposium on Wireless Communications Systems, ISWCS 2014 - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	39-43
Number of pages	5
ISBN (Electronic)	9781479958634
DOIs	https://doi.org/10.1109/ISWCS.2014.6933316
State	Published - 21 Oct 2014
Externally published	Yes
Event	2014 11th International Symposium on Wireless Communications Systems, ISWCS 2014 - Barcelona, Spain Duration: 26 Aug 2014 → 29 Aug 2014

Publication series

Name	2014 11th International Symposium on Wireless Communications Systems, ISWCS 2014 - Proceedings

Conference

Conference	2014 11th International Symposium on Wireless Communications Systems, ISWCS 2014
Country/Territory	Spain
City	Barcelona
Period	26/08/14 → 29/08/14

Bibliographical note

Publisher Copyright:
© 2014 IEEE.

Keywords

multi-path channels
non-linearity
OFDM
performance analysis

Access to Document

10.1109/ISWCS.2014.6933316

Cite this

Hilario Tacuri, A. B., & Fortes, J. M. (2014). Performance of mobile OFDM systems over time-varying non-linearities with memory. In 2014 11th International Symposium on Wireless Communications Systems, ISWCS 2014 - Proceedings (pp. 39-43). [6933316] (2014 11th International Symposium on Wireless Communications Systems, ISWCS 2014 - Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISWCS.2014.6933316

Hilario Tacuri, Alexander Beremiz ; Fortes, José Mauro. / Performance of mobile OFDM systems over time-varying non-linearities with memory. 2014 11th International Symposium on Wireless Communications Systems, ISWCS 2014 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2014. pp. 39-43 (2014 11th International Symposium on Wireless Communications Systems, ISWCS 2014 - Proceedings).

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abstract = "The performance of modern communications transmitters utilizing multi-carrier modulation techniques is highly sensitive to non-linear distortions arising mainly from the highpower amplifier (HPA). The increase in symbol duration makes the system more sensitive to time-varying channels. In addition, the wideband characteristics of multi-carrier signals result in frequency-dependent distortions, typically know as memory effects. This paper presents analytical expressions that could be used to evaluate the impact of the distortions induced by time-varying non-linearities with memory on the BER performance of a multi-carrier signal such as the orthogonal frequency division multiplexing (OFDM). The time-varying non-linearity with memory is modeled by a time-varying Volterra Series. The resulting mathematical expressions are applied to an specific situation, allowing for a quantitative evaluation of the system performance degradation.",

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Hilario Tacuri, AB & Fortes, JM 2014, Performance of mobile OFDM systems over time-varying non-linearities with memory. in 2014 11th International Symposium on Wireless Communications Systems, ISWCS 2014 - Proceedings., 6933316, 2014 11th International Symposium on Wireless Communications Systems, ISWCS 2014 - Proceedings, Institute of Electrical and Electronics Engineers Inc., pp. 39-43, 2014 11th International Symposium on Wireless Communications Systems, ISWCS 2014, Barcelona, Spain, 26/08/14. https://doi.org/10.1109/ISWCS.2014.6933316

Performance of mobile OFDM systems over time-varying non-linearities with memory. / Hilario Tacuri, Alexander Beremiz; Fortes, José Mauro.

2014 11th International Symposium on Wireless Communications Systems, ISWCS 2014 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2014. p. 39-43 6933316 (2014 11th International Symposium on Wireless Communications Systems, ISWCS 2014 - Proceedings).

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

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N2 - The performance of modern communications transmitters utilizing multi-carrier modulation techniques is highly sensitive to non-linear distortions arising mainly from the highpower amplifier (HPA). The increase in symbol duration makes the system more sensitive to time-varying channels. In addition, the wideband characteristics of multi-carrier signals result in frequency-dependent distortions, typically know as memory effects. This paper presents analytical expressions that could be used to evaluate the impact of the distortions induced by time-varying non-linearities with memory on the BER performance of a multi-carrier signal such as the orthogonal frequency division multiplexing (OFDM). The time-varying non-linearity with memory is modeled by a time-varying Volterra Series. The resulting mathematical expressions are applied to an specific situation, allowing for a quantitative evaluation of the system performance degradation.

AB - The performance of modern communications transmitters utilizing multi-carrier modulation techniques is highly sensitive to non-linear distortions arising mainly from the highpower amplifier (HPA). The increase in symbol duration makes the system more sensitive to time-varying channels. In addition, the wideband characteristics of multi-carrier signals result in frequency-dependent distortions, typically know as memory effects. This paper presents analytical expressions that could be used to evaluate the impact of the distortions induced by time-varying non-linearities with memory on the BER performance of a multi-carrier signal such as the orthogonal frequency division multiplexing (OFDM). The time-varying non-linearity with memory is modeled by a time-varying Volterra Series. The resulting mathematical expressions are applied to an specific situation, allowing for a quantitative evaluation of the system performance degradation.

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Hilario Tacuri AB, Fortes JM. Performance of mobile OFDM systems over time-varying non-linearities with memory. In 2014 11th International Symposium on Wireless Communications Systems, ISWCS 2014 - Proceedings. Institute of Electrical and Electronics Engineers Inc. 2014. p. 39-43. 6933316. (2014 11th International Symposium on Wireless Communications Systems, ISWCS 2014 - Proceedings). doi: 10.1109/ISWCS.2014.6933316

Performance of mobile OFDM systems over time-varying non-linearities with memory

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Keywords

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