RESOURCE ALLOCATION FOR OFDM SYSTEMS IN THE PRESENCE OF TIME-VARYING CHANNELS

Mort Naraghi-Pour; Xiang Gao

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Paper

RESOURCE ALLOCATION FOR OFDM SYSTEMS IN THE PRESENCE OF TIME-VARYING CHANNELS

Topics: Multi-Carrier and CDMA, OFDM, Spread-Spectrum and UWB

In Proceedings of the Second International Conference on Wireless Information Networks and Systems - Volume 0ICETE, 117-124, 2007 , Barcelona, Spain

Authors: Mort Naraghi-Pour and Xiang Gao

Affiliation: Louisiana State University, United States

Keyword(s): OFDM, resource allocation, time-varying channel, channel estimation, channel prediction.

Related Ontology Subjects/Areas/Topics: Multi-Carrier and CDMA, OFDM, Spread-Spectrum and UWB ; Telecommunications ; Wireless and Mobile Technologies ; Wireless Information Networks and Systems

Abstract: Adaptive resource allocation schemes for OFDM systems designed assuming static channels are known to experience significant performance loss when the channel is time-varying. The inaccuracy in channel state information (CSI) due to outdated channel estimates has been recognized as the main reason for this problem. To mitigate this effect, we present robust bit and power allocation schemes based on the predicted channel state information. Simulation results show that channel prediction schemes can significantly improve the performance of resource allocation algorithms over time-varying channels.

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Paper citation in several formats:

Naraghi-Pour, M. and Gao, X. (2007). RESOURCE ALLOCATION FOR OFDM SYSTEMS IN THE PRESENCE OF TIME-VARYING CHANNELS. In Proceedings of the Second International Conference on Wireless Information Networks and Systems (ICETE 2007) - WINSYS; ISBN 978-989-8111-14-2, SciTePress, pages 117-124. DOI: 10.5220/0002150301170124

@conference{winsys07,
author={Mort Naraghi{-}Pour. and Xiang Gao.},
title={RESOURCE ALLOCATION FOR OFDM SYSTEMS IN THE PRESENCE OF TIME-VARYING CHANNELS},
booktitle={Proceedings of the Second International Conference on Wireless Information Networks and Systems (ICETE 2007) - WINSYS},
year={2007},
pages={117-124},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0002150301170124},
isbn={978-989-8111-14-2},
}

TY - CONF

JO - Proceedings of the Second International Conference on Wireless Information Networks and Systems (ICETE 2007) - WINSYS
TI - RESOURCE ALLOCATION FOR OFDM SYSTEMS IN THE PRESENCE OF TIME-VARYING CHANNELS
SN - 978-989-8111-14-2
AU - Naraghi-Pour, M.
AU - Gao, X.
PY - 2007
SP - 117
EP - 124
DO - 10.5220/0002150301170124
PB - SciTePress