NDLI: Effects of channel estimation in adaptive loading gain of OFDM

Content Provider	IEEE Xplore Digital Library
Author	Ying Li Guangchuan Su
Copyright Year	2004
Description	Author affiliation: Dept. of Electron. Eng., Beijing Inst. of Technol., China (Ying Li; Guangchuan Su)
Abstract	The orthogonal frequency division multiplexing (OFDM) modulation scheme is adopted by more and more wireless communication systems to help achieve reliable and high-rate data transmission. Wideband wireless systems based on OFDM are limited in their performance by the dips in the frequency spectrum of the multipath fading channel. Channel estimation is not only useful for demodulation of the transmitted data but also for implementing the loading scheme for the transmitter, since the performance of an OFDM-based system can be augmented by the adaptive loading and power allocation of the subcarriers. We simulated two kinds of channel estimation schemes and an adaptive loading algorithm, and compared the effects of the channel estimation for loading gain. Simulation shows that the loading gain of the adaptive algorithm can be improved ulteriorly through better channel estimation.
Starting Page	296
Ending Page	299
File Size	569828
Page Count	4
File Format	PDF
ISBN	0780385624
DOI	10.1109/ICCEA.2004.1459350
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-11-01
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless communication Channel estimation Bandwidth Coherence Reliability engineering OFDM modulation Frequency estimation Power system reliability Data communication Delay
Content Type	Text
Resource Type	Article

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