A New Time Domain Intercarrier Interference Reduction Method for OFDM Systems in Time Varying Channels
Summary :
In orthogonal frequency division multiplexing (OFDM) based systems, intercarrier interference (ICI) created by the time varying property of wireless fading channels, degrades the data detection performance. This degradation strengthens especially when the mobile speed is relatively high or the number of subcarriers is large. Here, we interpret the time varying channel as the linear transformation of the time invariant channel impulse response. By using this new channel model, the time varying component can be reduced in the time domain by applying the inverse transformation to the received sequence. Then, the remaining time invariant channel component is removed by the equalization in the frequency domain. Some complexity reduction schemes are also proposed to make the proposed method feasible for practical implementation. The simulation results show that the new method offers a significant improvement in terms of bit error rate performance, especially when the number of subcarriers is larger than about 500.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E95-B No.11 pp.3492-3497
- Publication Date
- 2012/11/01
- Publicized
- Online ISSN
- 1745-1345
- DOI
- 10.1587/transcom.E95.B.3492
- Type of Manuscript
- PAPER
- Category
- Wireless Communication Technologies
Authors
Keyword
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Jinyong LEE, Younglok KIM, "A New Time Domain Intercarrier Interference Reduction Method for OFDM Systems in Time Varying Channels" in IEICE TRANSACTIONS on Communications,
vol. E95-B, no. 11, pp. 3492-3497, November 2012, doi: 10.1587/transcom.E95.B.3492.
Abstract: In orthogonal frequency division multiplexing (OFDM) based systems, intercarrier interference (ICI) created by the time varying property of wireless fading channels, degrades the data detection performance. This degradation strengthens especially when the mobile speed is relatively high or the number of subcarriers is large. Here, we interpret the time varying channel as the linear transformation of the time invariant channel impulse response. By using this new channel model, the time varying component can be reduced in the time domain by applying the inverse transformation to the received sequence. Then, the remaining time invariant channel component is removed by the equalization in the frequency domain. Some complexity reduction schemes are also proposed to make the proposed method feasible for practical implementation. The simulation results show that the new method offers a significant improvement in terms of bit error rate performance, especially when the number of subcarriers is larger than about 500.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E95.B.3492/_p
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@ARTICLE{e95-b_11_3492,
author={Jinyong LEE, Younglok KIM, },
journal={IEICE TRANSACTIONS on Communications},
title={A New Time Domain Intercarrier Interference Reduction Method for OFDM Systems in Time Varying Channels},
year={2012},
volume={E95-B},
number={11},
pages={3492-3497},
abstract={In orthogonal frequency division multiplexing (OFDM) based systems, intercarrier interference (ICI) created by the time varying property of wireless fading channels, degrades the data detection performance. This degradation strengthens especially when the mobile speed is relatively high or the number of subcarriers is large. Here, we interpret the time varying channel as the linear transformation of the time invariant channel impulse response. By using this new channel model, the time varying component can be reduced in the time domain by applying the inverse transformation to the received sequence. Then, the remaining time invariant channel component is removed by the equalization in the frequency domain. Some complexity reduction schemes are also proposed to make the proposed method feasible for practical implementation. The simulation results show that the new method offers a significant improvement in terms of bit error rate performance, especially when the number of subcarriers is larger than about 500.},
keywords={},
doi={10.1587/transcom.E95.B.3492},
ISSN={1745-1345},
month={November},}
Copy
TY - JOUR
TI - A New Time Domain Intercarrier Interference Reduction Method for OFDM Systems in Time Varying Channels
T2 - IEICE TRANSACTIONS on Communications
SP - 3492
EP - 3497
AU - Jinyong LEE
AU - Younglok KIM
PY - 2012
DO - 10.1587/transcom.E95.B.3492
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E95-B
IS - 11
JA - IEICE TRANSACTIONS on Communications
Y1 - November 2012
AB - In orthogonal frequency division multiplexing (OFDM) based systems, intercarrier interference (ICI) created by the time varying property of wireless fading channels, degrades the data detection performance. This degradation strengthens especially when the mobile speed is relatively high or the number of subcarriers is large. Here, we interpret the time varying channel as the linear transformation of the time invariant channel impulse response. By using this new channel model, the time varying component can be reduced in the time domain by applying the inverse transformation to the received sequence. Then, the remaining time invariant channel component is removed by the equalization in the frequency domain. Some complexity reduction schemes are also proposed to make the proposed method feasible for practical implementation. The simulation results show that the new method offers a significant improvement in terms of bit error rate performance, especially when the number of subcarriers is larger than about 500.
ER -
English
