Signal modeling classes for linearized OFDM SSPA behavioral analysis

Mairtin S. O'Droma; Nana Mgebrishvili

doi:10.1109/LCOMM.2005.02030

Signal modeling classes for linearized OFDM SSPA behavioral analysis

Mairtin S. O'Droma, Nana Mgebrishvili

University of Limerick

Research output: Contribution to journal › Article › peer-review

Abstract

This paper presents a comparison of four signal representation philosophies, denoted direct time domain, (DTD), mixed frequency and time domain (MFTD), statistical (Stat), and a newly proposed hybrid MFTD-statistical (MFTD-S) for the behavioral analysis of an orthogonal frequency division multiplexing (OFDM) signal through a solid state power amplifier (SSPA) with five degrees of linearization applied. The potential of the Stat and MFTD-S approaches for behavioral analysis of multicarrier, multi-band and ultra wideband systems is illustrated. Also, and for the first time, the impairment amelioration obtained through the introduction of different degrees of linearization in OFDM based systems is quantified, together with an upper bound to potential linearization improvement: linearization benefit is poor unless the narrow area of benefit can be matched to the raised-sine shape of the SSPA energy efficiency curve.

Original language	English
Pages (from-to)	127-129
Number of pages	3
Journal	IEEE Communications Letters
Volume	9
Issue number	2
DOIs	https://doi.org/10.1109/LCOMM.2005.02030
Publication status	Published - Feb 2005

Keywords

Error vector magnitude (EVM)
MFTD
MFTD-S
Nonlinear RF amplifier
OFDM
Percentage linearization
Wireless transmitters

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1109/LCOMM.2005.02030

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title = "Signal modeling classes for linearized OFDM SSPA behavioral analysis",

abstract = "This paper presents a comparison of four signal representation philosophies, denoted direct time domain, (DTD), mixed frequency and time domain (MFTD), statistical (Stat), and a newly proposed hybrid MFTD-statistical (MFTD-S) for the behavioral analysis of an orthogonal frequency division multiplexing (OFDM) signal through a solid state power amplifier (SSPA) with five degrees of linearization applied. The potential of the Stat and MFTD-S approaches for behavioral analysis of multicarrier, multi-band and ultra wideband systems is illustrated. Also, and for the first time, the impairment amelioration obtained through the introduction of different degrees of linearization in OFDM based systems is quantified, together with an upper bound to potential linearization improvement: linearization benefit is poor unless the narrow area of benefit can be matched to the raised-sine shape of the SSPA energy efficiency curve.",

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doi = "10.1109/LCOMM.2005.02030",

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AU - O'Droma, Mairtin S.

AU - Mgebrishvili, Nana

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AB - This paper presents a comparison of four signal representation philosophies, denoted direct time domain, (DTD), mixed frequency and time domain (MFTD), statistical (Stat), and a newly proposed hybrid MFTD-statistical (MFTD-S) for the behavioral analysis of an orthogonal frequency division multiplexing (OFDM) signal through a solid state power amplifier (SSPA) with five degrees of linearization applied. The potential of the Stat and MFTD-S approaches for behavioral analysis of multicarrier, multi-band and ultra wideband systems is illustrated. Also, and for the first time, the impairment amelioration obtained through the introduction of different degrees of linearization in OFDM based systems is quantified, together with an upper bound to potential linearization improvement: linearization benefit is poor unless the narrow area of benefit can be matched to the raised-sine shape of the SSPA energy efficiency curve.

KW - Error vector magnitude (EVM)

KW - MFTD

KW - MFTD-S

KW - Nonlinear RF amplifier

KW - OFDM

KW - Percentage linearization

KW - Wireless transmitters

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JO - IEEE Communications Letters

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Signal modeling classes for linearized OFDM SSPA behavioral analysis

Abstract

Keywords

UN SDGs

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