Matrix Channel Estimation for OFDM Systems with Two Training Symbols and High-Order Polynomial Fitting

Author

Lee, Huang C. ; Chen, Chao W. ; Young, Sheng-Min ; Wei, Shyue-Win

Author_Institution

Nat. Chi-Nan Univ., Puli

fYear

2007

fDate

3-7 Sept. 2007

Firstpage

1

Lastpage

5

Abstract

A time-varying channel estimation method for orthogonal frequency division multiplexing (OFDM) systems is presented. The presented method makes use of two training symbol scheme in combination with high-order polynomial fitting, and can thus obtain precious estimation results even under very large normalized Doppler frequency. Simulation results show that the presented method with second order of polynomial can work well at a normalized Doppler frequency as large as 0.08.

Keywords

Doppler effect; OFDM modulation; channel estimation; polynomial matrices; OFDM system; high-order polynomial fitting; matrix channel estimation; normalized Doppler frequency; orthogonal frequency division multiplexing; time-varying channel estimation; training symbols; Channel estimation; Fading; Fast Fourier transforms; Frequency estimation; Interference; Mobile communication; OFDM modulation; Polynomials; Signal to noise ratio; Time-varying channels;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 2007. PIMRC 2007. IEEE 18th International Symposium on

Conference_Location

Athens

Print_ISBN

978-1-4244-1144-3

Electronic_ISBN

978-1-4244-1144-3

Type

conf

DOI

10.1109/PIMRC.2007.4394495

Filename

4394495