Sponsor
Portland State University. Department of Electrical and Computer Engineering
First Advisor
Fu Li
Term of Graduation
Summer 2023
Date of Publication
8-4-2023
Document Type
Dissertation
Degree Name
Doctor of Philosophy (Ph.D.) in Electrical and Computer Engineering
Department
Electrical and Computer Engineering
Language
English
Subjects
5G, intermodulation distortion, nonlinearity, power amplifier
DOI
10.15760/etd.3649
Physical Description
1 online resource (xi, 178 pages)
Abstract
The collection of papers addresses various aspects of spectra and signals in RF wireless systems for 5G and beyond. The first paper focuses on the nonlinear effects of amplified dual-band OFDM signals, providing a spectrum model for intermodulation and cross-modulation. The second paper extends this analysis beyond bandwidth restrictions, enabling accurate prediction of amplified dual-band spectrum. The third paper emphasizes the significance of out-of-band intermodulation products and derives an analytical expression using third-order intercept points. The fourth paper presents a unified spectrum expression for OFDM, FBMC, and F-OFDM, facilitating comparative insights into these signals. The fifth paper explores second-order intermodulation in wideband RF communications and proposes a power spectrum model to quantify its impact. Finally, the sixth paper extends the analysis to fourth-order intermodulation and establishes a comprehensive power spectrum model encompassing even- and odd-order intermodulation distortions. The findings contribute to the understanding of the modeling of spectra and signals, providing valuable insights for RF engineers, spectrum planners, and researchers in the field.
Rights
© 2023 Xianzhen Yang
In Copyright. URI: http://rightsstatements.org/vocab/InC/1.0/ This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
Persistent Identifier
https://archives.pdx.edu/ds/psu/40832
Recommended Citation
Yang, Xianzhen, "Modeling of Signals and Spectra: 5G and Beyond" (2023). Dissertations and Theses. Paper 6513.
https://doi.org/10.15760/etd.3649