SIR Analysis of OFDM and GFDM Waveforms With Timing Offset, CFO, and Phase Noise
- Authors
- Lim, Byungju; Ko, Young-Chai
- Issue Date
- 10월-2017
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Synchronization; timing offset; carrier frequency offset; phase noise; OFDM; GFDM; SIR; filter design
- Citation
- IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, v.16, no.10, pp.6979 - 6990
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
- Volume
- 16
- Number
- 10
- Start Page
- 6979
- End Page
- 6990
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/82000
- DOI
- 10.1109/TWC.2017.2736998
- ISSN
- 1536-1276
- Abstract
- In this paper, we analyze the impacts of timing offset (TO), carrier frequency offset (CFO), and phase noise in orthogonal frequency division multiplexing (OFDM) and generalized frequency division multiplexing (GFDM) waveforms. As TO can be classified into four cases depending on the direction of offset, we provide the analysis of signal-to-interference ratio (SIR) for each of the cases when phase noise and synchronization errors of the desired user occur in frequency selective channel. We also propose the receiver filter for GFDM systems that is optimized to maximize SIR with CFO in additive white Gaussian noise channel. Simulation results show that GFDM is more sensitive to CFO than OFDM. We also confirm that GFDM systems using proposed receiver filter are robust against CFO compared with conventional systems.
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Collections - College of Engineering > School of Electrical Engineering > 1. Journal Articles
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