Exact Intersymbol Interference Analysis for Upsampled OFDM Signals with Symbol Timing Errors
Summary :
In OFDM systems, link performance depends heavily on the estimation of symbol-timing and frequency offsets. Performance sensitivity to these estimates is a major drawback of OFDM systems. Timing errors destroy the orthogonality of OFDM signals and lead to inter-symbol interference (ISI) and inter-carrier interference (ICI). The interference due to timing errors can be exploited as a metric for symbol-timing synchronization. In this paper, we propose a novel method to extract interference components using a DFT of the upsampled OFDM signals. Mathematical analysis and formulation are given for the dependence of interference on timing errors. From a numerical analysis, the proposed interference estimation shows robustness against channel dispersion.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E100-B No.8 pp.1472-1479
- Publication Date
- 2017/08/01
- Publicized
- 2017/01/20
- Online ISSN
- 1745-1345
- DOI
- 10.1587/transcom.2016EBP3433
- Type of Manuscript
- PAPER
- Category
- Wireless Communication Technologies
Authors
Heon HUH
Korea Polytechnic University
Feng LU
Qualcomm Inc.
James V. KROGMEIER
Purdue University
Keyword
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Heon HUH, Feng LU, James V. KROGMEIER, "Exact Intersymbol Interference Analysis for Upsampled OFDM Signals with Symbol Timing Errors" in IEICE TRANSACTIONS on Communications,
vol. E100-B, no. 8, pp. 1472-1479, August 2017, doi: 10.1587/transcom.2016EBP3433.
Abstract: In OFDM systems, link performance depends heavily on the estimation of symbol-timing and frequency offsets. Performance sensitivity to these estimates is a major drawback of OFDM systems. Timing errors destroy the orthogonality of OFDM signals and lead to inter-symbol interference (ISI) and inter-carrier interference (ICI). The interference due to timing errors can be exploited as a metric for symbol-timing synchronization. In this paper, we propose a novel method to extract interference components using a DFT of the upsampled OFDM signals. Mathematical analysis and formulation are given for the dependence of interference on timing errors. From a numerical analysis, the proposed interference estimation shows robustness against channel dispersion.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2016EBP3433/_p
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@ARTICLE{e100-b_8_1472,
author={Heon HUH, Feng LU, James V. KROGMEIER, },
journal={IEICE TRANSACTIONS on Communications},
title={Exact Intersymbol Interference Analysis for Upsampled OFDM Signals with Symbol Timing Errors},
year={2017},
volume={E100-B},
number={8},
pages={1472-1479},
abstract={In OFDM systems, link performance depends heavily on the estimation of symbol-timing and frequency offsets. Performance sensitivity to these estimates is a major drawback of OFDM systems. Timing errors destroy the orthogonality of OFDM signals and lead to inter-symbol interference (ISI) and inter-carrier interference (ICI). The interference due to timing errors can be exploited as a metric for symbol-timing synchronization. In this paper, we propose a novel method to extract interference components using a DFT of the upsampled OFDM signals. Mathematical analysis and formulation are given for the dependence of interference on timing errors. From a numerical analysis, the proposed interference estimation shows robustness against channel dispersion.},
keywords={},
doi={10.1587/transcom.2016EBP3433},
ISSN={1745-1345},
month={August},}
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TY - JOUR
TI - Exact Intersymbol Interference Analysis for Upsampled OFDM Signals with Symbol Timing Errors
T2 - IEICE TRANSACTIONS on Communications
SP - 1472
EP - 1479
AU - Heon HUH
AU - Feng LU
AU - James V. KROGMEIER
PY - 2017
DO - 10.1587/transcom.2016EBP3433
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E100-B
IS - 8
JA - IEICE TRANSACTIONS on Communications
Y1 - August 2017
AB - In OFDM systems, link performance depends heavily on the estimation of symbol-timing and frequency offsets. Performance sensitivity to these estimates is a major drawback of OFDM systems. Timing errors destroy the orthogonality of OFDM signals and lead to inter-symbol interference (ISI) and inter-carrier interference (ICI). The interference due to timing errors can be exploited as a metric for symbol-timing synchronization. In this paper, we propose a novel method to extract interference components using a DFT of the upsampled OFDM signals. Mathematical analysis and formulation are given for the dependence of interference on timing errors. From a numerical analysis, the proposed interference estimation shows robustness against channel dispersion.
ER -
English
