Title :
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
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;
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
DOI :
10.1109/PIMRC.2007.4394495
