Low-Cost Measurement Setup for Power Amplifier Characterization and Digital Pre-distortion: Challenges and Implementation

Adarsh A. Venkataramani; Carl W. Morgenstern; Yu Rong; Pierre Francois W. Wolfe; Brian A. Janice; Kenneth E. Kolodziej; Daniel W. Bliss

doi:10.1109/RadarConf2458775.2024.10549147

Low-Cost Measurement Setup for Power Amplifier Characterization and Digital Pre-distortion: Challenges and Implementation

Adarsh A. Venkataramani
, Carl W. Morgenstern
, Yu Rong
, Pierre Francois W. Wolfe
, Brian A. Janice
, Kenneth E. Kolodziej
, Daniel W. Bliss

Engineering, Ira A. Fulton Schools of (IAFSE)

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

1 Scopus citations

Abstract

This paper (a) experimentally evaluates power amplifier (PA) linearization using digital pre-distortion (DPD) on a low-cost commercial off-the-shelf (COTS) Ettus N320 software-defined radio (SDR) and (b) provides a comprehensive overview of solutions for calibration challenges encountered during DPD implementation on SDRs. In the experiment, a 16-QAM, 200kHz, 1.5dBm input waveform drives a ZVE-8G+ amplifier into saturation. Following a twelve-step calibration process and leveraging the in-direct learning architecture (ILA) DPD, the results exhibit a linearized output achieving -32dB in adjacent channel power ratio (ACPR) and -35dB error vector magnitude (EVM).

Original language	English (US)
Title of host publication	RadarConf 2024 - 2024 IEEE Radar Conference, Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9798350329209
DOIs	https://doi.org/10.1109/RadarConf2458775.2024.10549147
State	Published - 2024
Event	2024 IEEE Radar Conference, RadarConf 2024 - Denver, United States Duration: May 6 2024 → May 10 2024

Publication series

Name	Proceedings of the IEEE Radar Conference

Conference

Conference	2024 IEEE Radar Conference, RadarConf 2024
Country/Territory	United States
City	Denver
Period	5/6/24 → 5/10/24

Keywords

Calibration
Digital pre-distortion
Power amplifiers
Radar and Communications
Software-defined radio
Spectrum efficiency

ASJC Scopus subject areas

Computer Networks and Communications
Signal Processing
Instrumentation

Access to Document

10.1109/RadarConf2458775.2024.10549147

Cite this

Venkataramani, A. A., Morgenstern, C. W., Rong, Y., Wolfe, P. F. W., Janice, B. A., Kolodziej, K. E., & Bliss, D. W. (2024). Low-Cost Measurement Setup for Power Amplifier Characterization and Digital Pre-distortion: Challenges and Implementation. In RadarConf 2024 - 2024 IEEE Radar Conference, Proceedings (Proceedings of the IEEE Radar Conference). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/RadarConf2458775.2024.10549147

Low-Cost Measurement Setup for Power Amplifier Characterization and Digital Pre-distortion: Challenges and Implementation. / Venkataramani, Adarsh A.; Morgenstern, Carl W.; Rong, Yu et al.
RadarConf 2024 - 2024 IEEE Radar Conference, Proceedings. Institute of Electrical and Electronics Engineers Inc., 2024. (Proceedings of the IEEE Radar Conference).

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

Venkataramani, AA, Morgenstern, CW, Rong, Y, Wolfe, PFW, Janice, BA, Kolodziej, KE & Bliss, DW 2024, Low-Cost Measurement Setup for Power Amplifier Characterization and Digital Pre-distortion: Challenges and Implementation. in RadarConf 2024 - 2024 IEEE Radar Conference, Proceedings. Proceedings of the IEEE Radar Conference, Institute of Electrical and Electronics Engineers Inc., 2024 IEEE Radar Conference, RadarConf 2024, Denver, United States, 5/6/24. https://doi.org/10.1109/RadarConf2458775.2024.10549147

Venkataramani AA, Morgenstern CW, Rong Y, Wolfe PFW, Janice BA, Kolodziej KE et al. Low-Cost Measurement Setup for Power Amplifier Characterization and Digital Pre-distortion: Challenges and Implementation. In RadarConf 2024 - 2024 IEEE Radar Conference, Proceedings. Institute of Electrical and Electronics Engineers Inc. 2024. (Proceedings of the IEEE Radar Conference). doi: 10.1109/RadarConf2458775.2024.10549147

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title = "Low-Cost Measurement Setup for Power Amplifier Characterization and Digital Pre-distortion: Challenges and Implementation",

abstract = "This paper (a) experimentally evaluates power amplifier (PA) linearization using digital pre-distortion (DPD) on a low-cost commercial off-the-shelf (COTS) Ettus N320 software-defined radio (SDR) and (b) provides a comprehensive overview of solutions for calibration challenges encountered during DPD implementation on SDRs. In the experiment, a 16-QAM, 200kHz, 1.5dBm input waveform drives a ZVE-8G+ amplifier into saturation. Following a twelve-step calibration process and leveraging the in-direct learning architecture (ILA) DPD, the results exhibit a linearized output achieving -32dB in adjacent channel power ratio (ACPR) and -35dB error vector magnitude (EVM).",

keywords = "Calibration, Digital pre-distortion, Power amplifiers, Radar and Communications, Software-defined radio, Spectrum efficiency",

author = "Venkataramani, \{Adarsh A.\} and Morgenstern, \{Carl W.\} and Yu Rong and Wolfe, \{Pierre Francois W.\} and Janice, \{Brian A.\} and Kolodziej, \{Kenneth E.\} and Bliss, \{Daniel W.\}",

note = "Publisher Copyright: {\textcopyright} 2024 IEEE.; 2024 IEEE Radar Conference, RadarConf 2024 ; Conference date: 06-05-2024 Through 10-05-2024",

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doi = "10.1109/RadarConf2458775.2024.10549147",

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T2 - 2024 IEEE Radar Conference, RadarConf 2024

AU - Venkataramani, Adarsh A.

AU - Morgenstern, Carl W.

AU - Rong, Yu

AU - Wolfe, Pierre Francois W.

AU - Janice, Brian A.

AU - Kolodziej, Kenneth E.

AU - Bliss, Daniel W.

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N2 - This paper (a) experimentally evaluates power amplifier (PA) linearization using digital pre-distortion (DPD) on a low-cost commercial off-the-shelf (COTS) Ettus N320 software-defined radio (SDR) and (b) provides a comprehensive overview of solutions for calibration challenges encountered during DPD implementation on SDRs. In the experiment, a 16-QAM, 200kHz, 1.5dBm input waveform drives a ZVE-8G+ amplifier into saturation. Following a twelve-step calibration process and leveraging the in-direct learning architecture (ILA) DPD, the results exhibit a linearized output achieving -32dB in adjacent channel power ratio (ACPR) and -35dB error vector magnitude (EVM).

AB - This paper (a) experimentally evaluates power amplifier (PA) linearization using digital pre-distortion (DPD) on a low-cost commercial off-the-shelf (COTS) Ettus N320 software-defined radio (SDR) and (b) provides a comprehensive overview of solutions for calibration challenges encountered during DPD implementation on SDRs. In the experiment, a 16-QAM, 200kHz, 1.5dBm input waveform drives a ZVE-8G+ amplifier into saturation. Following a twelve-step calibration process and leveraging the in-direct learning architecture (ILA) DPD, the results exhibit a linearized output achieving -32dB in adjacent channel power ratio (ACPR) and -35dB error vector magnitude (EVM).

KW - Calibration

KW - Digital pre-distortion

KW - Power amplifiers

KW - Radar and Communications

KW - Software-defined radio

KW - Spectrum efficiency

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M3 - Conference contribution

T3 - Proceedings of the IEEE Radar Conference

BT - RadarConf 2024 - 2024 IEEE Radar Conference, Proceedings

PB - Institute of Electrical and Electronics Engineers Inc.

Y2 - 6 May 2024 through 10 May 2024

ER -

Low-Cost Measurement Setup for Power Amplifier Characterization and Digital Pre-distortion: Challenges and Implementation

Abstract

Publication series

Conference

Keywords

ASJC Scopus subject areas

Access to Document

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Cite this