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Beam-steered Modulation in Advanced Antenna System

Jinnahalli Venugopal, Smitha LU (2023) EITM02 20212
Department of Electrical and Information Technology
Abstract
The newer spectral bands in millimeter-wave (mm-Wave) spectrum over the last few years have made higher data rates possible and improved quality of service for the users, but it possesses new challenges to design spectral agile radios. Power Amplifiers (PA) are a crucial analog component connected to Multiple input multiple output (MIMO) antennas which inherits non-linear effects. In addition, PA’s can experience strong load impedance mismatch conditions alongside mutual coupling effect in an antenna array when operating across varying beam angles over wide range of 5G bands. This thesis investigates development of a simulation technique for comprehensive analysis of nonlinear and dynamic characteristics of multi-antenna transmitters (Tx).... (More)
The newer spectral bands in millimeter-wave (mm-Wave) spectrum over the last few years have made higher data rates possible and improved quality of service for the users, but it possesses new challenges to design spectral agile radios. Power Amplifiers (PA) are a crucial analog component connected to Multiple input multiple output (MIMO) antennas which inherits non-linear effects. In addition, PA’s can experience strong load impedance mismatch conditions alongside mutual coupling effect in an antenna array when operating across varying beam angles over wide range of 5G bands. This thesis investigates development of a simulation technique for comprehensive analysis of nonlinear and dynamic characteristics of multi-antenna transmitters (Tx). The analysis is implemented by developing various antenna array models which takes joint consideration of antenna crosstalk and mismatch effects in multi-Tx system and capable of reflecting their behavior to developed load sensitive PA models. Further the dynamic behavior is studied with several experiments performed to analyze the beam steered modulation effects and factors contributing to it. (Less)
Popular Abstract
The modern wireless system is evolving in fast pace with advent of technologies like Internet of Things (IoT) and 5G. With huge demand for mobile data rates increasing each year and newer connected devices entering market because of different use cases there is increase demand for data rates. Streaming videos on wireless devices with high definition 4K 3D videos like examples clearly shows the demand for higher data rates. Mobile services are expected to be fast, reliable and cheap. Apart from this, the number of connected devices is growing exponentially, and three times more devices are expected to be connected in the next 5 years With in consequence with these changes, there is advancement in Antenna technologies like... (More)
The modern wireless system is evolving in fast pace with advent of technologies like Internet of Things (IoT) and 5G. With huge demand for mobile data rates increasing each year and newer connected devices entering market because of different use cases there is increase demand for data rates. Streaming videos on wireless devices with high definition 4K 3D videos like examples clearly shows the demand for higher data rates. Mobile services are expected to be fast, reliable and cheap. Apart from this, the number of connected devices is growing exponentially, and three times more devices are expected to be connected in the next 5 years With in consequence with these changes, there is advancement in Antenna technologies like Multiple-Input-Multiple-Output(MIMO) part of Advanced Antenna systems (AAS). Design of these antenna systems requires modelling the transmitter-receiver chain components for system design parameters. As distance between elements in these MIMO antenna array is small, there are minute effects of non-linearities.

For wireless cellular communications(5G systems), there are several methods on how to improve the network performance. The important aspect is to model these non-linearites in tangible manner. When using MIMO antennas in a base station these undesirable effects causes significant impact on performance. At higher frequencies the magnitude of non-linearities increases. This master thesis addresses modelling of these problems associated MIMO systems and characterization of these systems. (Less)
Please use this url to cite or link to this publication:
author
Jinnahalli Venugopal, Smitha LU
supervisor
organization
course
EITM02 20212
year
type
H2 - Master's Degree (Two Years)
subject
keywords
5G-MIMO, Beam-forming, Beam-steering, Advanced antenna systems
report number
LU/LTH-EIT 2023-914
language
English
id
9112785
date added to LUP
2023-03-22 16:24:14
date last changed
2023-03-22 16:24:14
@misc{9112785,
  abstract     = {{The newer spectral bands in millimeter-wave (mm-Wave) spectrum over the last few years have made higher data rates possible and improved quality of service for the users, but it possesses new challenges to design spectral agile radios. Power Amplifiers (PA) are a crucial analog component connected to Multiple input multiple output (MIMO) antennas which inherits non-linear effects. In addition, PA’s can experience strong load impedance mismatch conditions alongside mutual coupling effect in an antenna array when operating across varying beam angles over wide range of 5G bands. This thesis investigates development of a simulation technique for comprehensive analysis of nonlinear and dynamic characteristics of multi-antenna transmitters (Tx). The analysis is implemented by developing various antenna array models which takes joint consideration of antenna crosstalk and mismatch effects in multi-Tx system and capable of reflecting their behavior to developed load sensitive PA models. Further the dynamic behavior is studied with several experiments performed to analyze the beam steered modulation effects and factors contributing to it.}},
  author       = {{Jinnahalli Venugopal, Smitha}},
  language     = {{eng}},
  note         = {{Student Paper}},
  title        = {{Beam-steered Modulation in Advanced Antenna System}},
  year         = {{2023}},
}