NDLI: Highly Time Varying Channel Estimation for OFDMA Uplink Transmission in IEEE 802.16e Network

Content Provider	IEEE Xplore Digital Library
Author	Rabbi, M.F. Shengwei Hou Ko, C.C.
Copyright Year	2009
Description	Author affiliation: Senior Member, IEEE, Department of Electrical and Computer Engineering, National University of Singapore. g0700291@nus.edu.sg, g0500135@nus.edu.sg, elekocc@nus.edu.sg (Ko, C.C.) \|\| Department of Electrical and Computer Engineering, National University of Singapore. g0700291@nus.edu.sg, g0500135@nus.edu.sg (Rabbi, M.F.; Shengwei Hou)
Abstract	Basis Expansion Model (BEM) based estimation is studied for highly time varying OFDMA uplink channel. We consider two popular pilot patterns-pilot placed over frequency-time grid as proposed in IEEE 802.16e standard and pilot placed on the time axis. In a high Doppler spread scenario, taking Inter Carrier Interference (ICI) impact from data block into account, Least Square (LS) estimator is developed for both time and frequency domain pilot aided estimation. From the performance analysis and simulation result, it is shown that, time domain LS (LS-T) estimator performs better than the current frequency domain estimator. The computational complexity for time domain LS is also discussed.
Starting Page	6
Ending Page	11
File Size	3352582
Page Count	6
File Format	PDF
ISBN	9781424433568
DOI	10.1109/AUSCTW.2009.4805591
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-02-04
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	IEEE 802.16e Computational modeling Interference Time domain analysis Frequency estimation Time varying channel Least squares approximation Computational complexity Frequency domain analysis Analytical models Channel estimation Performance analysis OFDMA uplink
Content Type	Text
Resource Type	Article

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