NDLI: Fast time-varying dispersive channel estimation and equalization for 8-PSK cellular system

Content Provider	IEEE Xplore Digital Library
Author	Sang-Yick Leong Jingxian Wu Jan Olivier Chengshan Xiao
Copyright Year	2003
Description	Author affiliation: Dept. of Electr. Eng., Missouri Univ., Columbia, MO, USA (Sang-Yick Leong; Jingxian Wu; Jan Olivier; Chengshan Xiao)
Abstract	The channel estimation and equalization for EDGE system with time-varying and frequency-selective fading channels are discussed. It is shown that the fast fading channel during a selected slot in the EDGE system can be modeled as a linear function of time, and a linear least-squares algorithm is proposed to estimate the fading channel. For typical channel profiles of the EDGE system, the channel impulse response is not in its minimum phase form, thus cannot be directly used in computationally efficient equalizers, such as delayed decision feedback sequence estimation or reduced state sequence estimation. To overcome this problem, a Cholesky decomposition-based method is introduced to transform the estimated channel impulse response into its minimum phase form. The simulation results show that the proposed algorithms can effectively combat the time-varying and frequency-selective channel fading with Doppler frequency being in a wide range up to 300 Hz.
Starting Page	2421
Ending Page	2425
File Size	273978
Page Count	5
File Format	PDF
ISBN	0780379748
DOI	10.1109/GLOCOM.2003.1258671
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-12-01
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Time varying systems Dispersion Channel estimation Delay estimation Phase estimation State estimation Frequency Frequency-selective fading channels Equalizers State feedback
Content Type	Text
Resource Type	Article

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