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Evaluation of Dynamic Voltage and Frequency Scaling on Digital Pre-distortion

Chen, Wenyue LU (2025) EITM02 20251
Department of Electrical and Information Technology
Abstract
Power amplifiers play a crucial role in wireless communication systems. However, they can achieve high efficiency only when operating in the nonlinear
region. To maintain linear output while operating in this region, several techniques have been developed, among which digital pre-distortion (DPD) is one
of the most widely used.
In this thesis, we designed and analyzed a digital predistortion (DPD) system consisting of eight lookup-table (LUT)-based modules. This work began
with the development of a DPD architecture to ensure the system effectively
compensates for nonlinearities. Based on this design, we evaluated its power
consumption at various operating frequencies and supply voltages, gaining
insight into its performance and... (More)
Power amplifiers play a crucial role in wireless communication systems. However, they can achieve high efficiency only when operating in the nonlinear
region. To maintain linear output while operating in this region, several techniques have been developed, among which digital pre-distortion (DPD) is one
of the most widely used.
In this thesis, we designed and analyzed a digital predistortion (DPD) system consisting of eight lookup-table (LUT)-based modules. This work began
with the development of a DPD architecture to ensure the system effectively
compensates for nonlinearities. Based on this design, we evaluated its power
consumption at various operating frequencies and supply voltages, gaining
insight into its performance and efficiency.
This work evaluates the impact of dynamic voltage and frequency scaling
(DVFS) on the DPD. With the increasing demand for high energy efficiency
and wide bandwidth in wireless systems, DVFS has become an essential technique to balance power consumption and signal quality. However, dynamic
operating conditions introduce time-varying nonlinear behaviors that challenge the adaptability of traditional DPD algorithms.
This thesis analyzes the sensitivity of DPD models under varying voltage and
frequency conditions and check if power consumption by DPD algorithm can
be reduced by employing DVFS. (Less)
Please use this url to cite or link to this publication:
author
Chen, Wenyue LU
supervisor
organization
course
EITM02 20251
year
type
H2 - Master's Degree (Two Years)
subject
keywords
digital pre-distortion (DPD), dynamic voltage and frequency scaling (DVFS), power amplifier (PA), nonlinear distortion, adaptive linearization, dynamic power
report number
LU/LTH-EIT 2025-1100
language
English
id
9213689
date added to LUP
2025-10-09 12:54:13
date last changed
2025-10-09 12:54:13
@misc{9213689,
  abstract     = {{Power amplifiers play a crucial role in wireless communication systems. However, they can achieve high efficiency only when operating in the nonlinear
region. To maintain linear output while operating in this region, several techniques have been developed, among which digital pre-distortion (DPD) is one
of the most widely used.
In this thesis, we designed and analyzed a digital predistortion (DPD) system consisting of eight lookup-table (LUT)-based modules. This work began
with the development of a DPD architecture to ensure the system effectively
compensates for nonlinearities. Based on this design, we evaluated its power
consumption at various operating frequencies and supply voltages, gaining
insight into its performance and efficiency.
This work evaluates the impact of dynamic voltage and frequency scaling
(DVFS) on the DPD. With the increasing demand for high energy efficiency
and wide bandwidth in wireless systems, DVFS has become an essential technique to balance power consumption and signal quality. However, dynamic
operating conditions introduce time-varying nonlinear behaviors that challenge the adaptability of traditional DPD algorithms.
This thesis analyzes the sensitivity of DPD models under varying voltage and
frequency conditions and check if power consumption by DPD algorithm can
be reduced by employing DVFS.}},
  author       = {{Chen, Wenyue}},
  language     = {{eng}},
  note         = {{Student Paper}},
  title        = {{Evaluation of Dynamic Voltage and Frequency Scaling on Digital Pre-distortion}},
  year         = {{2025}},
}