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

Mort Naraghi-Pour, Xiang Gao

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 The inaccuracy in channel state information (CSI) due to outdated channel estimates has been recognized as the main reason for this problem.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.

References

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Paper Citation


in Harvard Style

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 - Volume 1: WINSYS, (ICETE 2007) ISBN 978-989-8111-14-2, pages 117-124. DOI: 10.5220/0002150301170124


in Bibtex Style

@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 - Volume 1: WINSYS, (ICETE 2007)},
year={2007},
pages={117-124},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0002150301170124},
isbn={978-989-8111-14-2},
}


in EndNote Style

TY - CONF
JO - Proceedings of the Second International Conference on Wireless Information Networks and Systems - Volume 1: WINSYS, (ICETE 2007)
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