Paper Info
Title
Modeling and Analysis on Radio Interference of OFDM Waveforms for Coexistence Study.
Abstract
The fifth-generation (5G) cellular mobile communications look promising with features that can help improving consumer experience and satisfaction. To be able to provide these features, more spectrum is required according to the Shannon-Hartley theorem. Spectrum is, however, a finite and scarce resource, and it can be allocated to a new service only when the spectral coexistence with other incumbents is ensured. New waveforms for 5G that differ from the conventional orthogonal frequency-division multiplexing (OFDM) are required in order to have a superior performance in terms of out-of-band emissions and to be able to utilize the fragmented spectrum in different bands. We developed the analytical models for evaluating the out-of-band emissions of the conventional cyclic prefix (CP)-OFDM as well as its alternatives: windowed OFDM and filtered OFDM, using their signal spectral modeling. The resulting expressions for the power spectral density (PSD) and the frequency-dependent rejection (FDR) involve simple closed-form expressions or easily computable integrals. We applied the expressions to the advanced minimum coupling loss model for assessing the feasibility of the spectral coexistence between the potential 5G systems (with linearized or nonlinear power amplifier) and the incumbent radar systems. The numerical simulation results indicate that both the windowed OFDM and filtered OFDM guarantee the coexistence at the low expense of the spectrum utilization and their coexistence performance can be reduced and reversed with nonlinearity distortion of the power amplifier.
Year
DOI
Venue
2019
10.1109/ACCESS.2019.2896280
IEEE ACCESS
Keywords
Field
DocType
Coexistence study,CP-OFDM,fifth-generation (5G) cellular mobile communications,filtered OFDM,frequency dependent rejection,frequency sharing study,out-of-band emission,power amplifier nonlinearity,power spectral density
Computer science,Electromagnetic interference,Waveform,Computer network,Electronic engineering,Orthogonal frequency-division multiplexing
Journal
Volume
ISSN
Citations 
7
2169-3536
0
PageRank 
References 
Authors
0.34
0
6
Name
Order
Citations
PageRank
Jaedon Park131.22
Eunhyoung Lee220.87
Sung-Ho Park34314.52
Sabogu-S. Raymond400.34
Seongmin Pyo523.76
Han-Shin Jo6120575.15