Effect of Frequency Offset in OFDM Systems with Distributed Beamforming

Youchan JEON; Haesoo KIM

doi:10.1587/transcom.E96.B.371

Effect of Frequency Offset in OFDM Systems with Distributed Beamforming

Youchan JEON, Haesoo KIM

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Three synchronization issues, i.e., phase, frequency, and symbol time, have to be properly controlled to achieve distributed beamforming gain. In orthogonal frequency division multiplexing (OFDM) systems, frequency offset in cooperating signals is more important than other synchronization issues since it results in SNR degradation as well as inter-carrier interference (ICI). In this paper, the impact of frequency offset in distributed beamforming is analyzed for OFDM systems. ICI resulting from frequency offset between cooperating signals is also investigated and approximated. Performance degradation due to frequency offset is shown with various numbers of cooperating signals and offset values. We show that frequency offset between cooperating signals is critical in OFDM systems since it leads to interference from the other subcarriers as well as power loss in the desired signal.

Publication: IEICE TRANSACTIONS on Communications Vol.E96-B No.1 pp.371-374

Publication Date: 2013/01/01

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Online ISSN: 1745-1345

DOI: 10.1587/transcom.E96.B.371

Type of Manuscript: LETTER

Category: Wireless Communication Technologies

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Youchan JEON, Haesoo KIM, "Effect of Frequency Offset in OFDM Systems with Distributed Beamforming" in IEICE TRANSACTIONS on Communications, vol. E96-B, no. 1, pp. 371-374, January 2013, doi: 10.1587/transcom.E96.B.371.
Abstract: Three synchronization issues, i.e., phase, frequency, and symbol time, have to be properly controlled to achieve distributed beamforming gain. In orthogonal frequency division multiplexing (OFDM) systems, frequency offset in cooperating signals is more important than other synchronization issues since it results in SNR degradation as well as inter-carrier interference (ICI). In this paper, the impact of frequency offset in distributed beamforming is analyzed for OFDM systems. ICI resulting from frequency offset between cooperating signals is also investigated and approximated. Performance degradation due to frequency offset is shown with various numbers of cooperating signals and offset values. We show that frequency offset between cooperating signals is critical in OFDM systems since it leads to interference from the other subcarriers as well as power loss in the desired signal.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E96.B.371/_p

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@ARTICLE{e96-b_1_371,
author={Youchan JEON, Haesoo KIM, },
journal={IEICE TRANSACTIONS on Communications},
title={Effect of Frequency Offset in OFDM Systems with Distributed Beamforming},
year={2013},
volume={E96-B},
number={1},
pages={371-374},
abstract={Three synchronization issues, i.e., phase, frequency, and symbol time, have to be properly controlled to achieve distributed beamforming gain. In orthogonal frequency division multiplexing (OFDM) systems, frequency offset in cooperating signals is more important than other synchronization issues since it results in SNR degradation as well as inter-carrier interference (ICI). In this paper, the impact of frequency offset in distributed beamforming is analyzed for OFDM systems. ICI resulting from frequency offset between cooperating signals is also investigated and approximated. Performance degradation due to frequency offset is shown with various numbers of cooperating signals and offset values. We show that frequency offset between cooperating signals is critical in OFDM systems since it leads to interference from the other subcarriers as well as power loss in the desired signal.},
keywords={},
doi={10.1587/transcom.E96.B.371},
ISSN={1745-1345},
month={January},}

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TY - JOUR
TI - Effect of Frequency Offset in OFDM Systems with Distributed Beamforming
T2 - IEICE TRANSACTIONS on Communications
SP - 371
EP - 374
AU - Youchan JEON
AU - Haesoo KIM
PY - 2013
DO - 10.1587/transcom.E96.B.371
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E96-B
IS - 1
JA - IEICE TRANSACTIONS on Communications
Y1 - January 2013
AB - Three synchronization issues, i.e., phase, frequency, and symbol time, have to be properly controlled to achieve distributed beamforming gain. In orthogonal frequency division multiplexing (OFDM) systems, frequency offset in cooperating signals is more important than other synchronization issues since it results in SNR degradation as well as inter-carrier interference (ICI). In this paper, the impact of frequency offset in distributed beamforming is analyzed for OFDM systems. ICI resulting from frequency offset between cooperating signals is also investigated and approximated. Performance degradation due to frequency offset is shown with various numbers of cooperating signals and offset values. We show that frequency offset between cooperating signals is critical in OFDM systems since it leads to interference from the other subcarriers as well as power loss in the desired signal.
ER -