Browse

Packet scheduling in the presence of channel estimation error in multi-user OFDM wireless systems

Cited 0 time in Web of Science Cited 1 time in Scopus
Authors
Jun, Jae-Hoon; Lee, Yong-Hwan
Issue Date
2006-07
Publisher
Institute of Electrical and Electronics Engineers
Citation
SPAWC '06. IEEE 7th Workshop on Signal Processing Advances in Wireless Communications, 2006
Keywords
Packet SchedulingChannel Estimation errorOFDM
Abstract
In this paper, we investigate the effect of channel estimation error on the performance of channel aware techniques in a packet-based multi-user OFDM wireless system. To this end, we consider the use of two channel estimation schemes; one is a simple linear and the other is an optimum Wiener-type channel estimator. We examine the effect of channel impulse response (CIR) estimation error on coherent reception and the effect of signal-to-interference and noise ratio (SINR) estimation error on channel aware transmission techniques (e.g., packet scheduling). It is shown that the performance of coherent reception is relatively less susceptible to the CIR estimation error, but the performance of channel aware schemes can be very sensitive to the SINR estimation error. To alleviate this problem, we propose a robust scheduling scheme which can work without significant performance degradation even in the presence of large channel estimation error. Finally, we verify the performance of the proposed scheduling scheme by computer simulation.
Language
English
URI
http://spawc2006.eurecom.fr

https://hdl.handle.net/10371/7098
DOI
https://doi.org/10.1109/SPAWC.2006.346385
Files in This Item:
Appears in Collections:
College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Electrical and Computer Engineering (전기·정보공학부)Others_전기·정보공학부
  • mendeley

Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse