Characterization of GFDM signal with timing offset, CFO, nonlinearity, and PN
File(s)
Accepted version
Author(s)
Yazdani, Fereshteh
Kazemi, Mohammad
Mohammadi, Abbas
Abdipour, Abdolali
Type
Journal Article
Abstract
In this paper, we study the joint effects of timing offset (TO), carrier frequency offset (CFO), phase noise (PN), and nonlinear power amplifier distortion on a generalized frequency division multiplexing (GFDM) system. Classifying the TO into four cases based on the direction of offset, our work analyzes the signal-to-interference ratio (SIR) for each of the four cases at the GFDM receiver in the presence of synchronization errors, PN, and nonlinear power amplifier. Then, we conduct simulations to compare the performance of GFDM systems under these impairments with that of orthogonal frequency division multiplexing (OFDM) systems, considering both matched filter and zero-forcing. The results show that GFDM systems are more robust against TO and PN while they are more sensitive to CFO and nonlinear distortion compared to OFDM systems. More specifically, it is shown that employing GFDM improves the system SIR compared to OFDM by up to 3 dB and 1.5 dB under TO and PN distortions, respectively.
Date Issued
2024-12-01
Date Acceptance
2024-04-04
Citation
Telecommunication Systems, 2024, 87 (4), pp.1087-1098
ISSN
1018-4864
Publisher
Springer
Start Page
1087
End Page
1098
Journal / Book Title
Telecommunication Systems
Volume
87
Issue
4
Copyright Statement
© The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2024. This is the author’s accepted manuscript made available under a CC-BY licence in accordance with Imperial’s Research Publications Open Access policy (www.imperial.ac.uk/oa-policy)
License URL
Subjects
Carrier frequency offset
GFDM
INTERFERENCE CANCELLATION
Nonlinear power amplifier
OFDM
phase noise
Science & Technology
SIR ANALYSIS
Technology
Telecommunications
Timing offset
WAVE-FORMS
Publication Status
Published
Date Publish Online
2024-10-26