NDLI: Adaptive prediction iterative channel estimation for OFDM signal reception in a frequency selective fading channel

Content Provider	IEEE Xplore Digital Library
Author	Takaoka, S. Adachi, F.
Copyright Year	2003
Description	Author affiliation: Dept. of Electr. & Commun. Eng., Tohoku Univ., Japan (Takaoka, S.; Adachi, F.)
Abstract	In this paper, pilot-assisted adaptive prediction iterative channel estimation is proposed for the antenna diversity reception of orthogonal frequency division multiplexing (OFDM) signals. Adaptive prediction filtering is incorporated into iterative channel estimation process with decision feedback and reverse modulation. The filter tap weights are adaptively updated according to changes in the multipath propagation environment. For the adaptation of tap weights, the normalized least mean square (NLMS) algorithm is applied that uses the noisy instantaneous channel gains obtained by reverse modulation and from pilot symbols as the reference signal. The average bit error rate (BER) performance in a frequency selective fading channel is evaluated by computer simulation for the frequency and time multiplexed pilot cases. It is confirmed that adaptive prediction iterative channel estimation provides better BER performance than using fixed-tap filter.
Starting Page	1576
Ending Page	1580
File Size	328804
Page Count	5
File Format	PDF
ISBN	0780377575
ISSN	10903038
DOI	10.1109/VETECS.2003.1207087
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-04-22
Publisher Place	South Korea
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Channel estimation OFDM Frequency estimation Fading Adaptive filters Bit error rate Adaptive arrays Antennas and propagation Diversity reception Filtering
Content Type	Text
Resource Type	Article

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