Title :
A Comparative Study of Channel Estimation for Mobile WiMAX System in High Mobility
Author :
Lee, Dong Heon ; Kim, Suk Chan ; Park, Dong Chan ; Kim, Young-il
Author_Institution :
Dept. of Electron. Eng., Pusan Nat. Univ., Pusan
Abstract :
In this paper, we study channel estimation methods with various curve fitting techniques for mobile WiMAX system and find that they cannot support high mobility sufficiently. We also propose a channel estimation method which is based on piecewise linear estimation to overcome the problem of high mobility. The performances including mean squared error (MSE) and bit error rate (BER) are compared and we find that the proposed method has better performance than others at higher speeds.
Keywords :
WiMax; channel estimation; curve fitting; error statistics; mean square error methods; mobile radio; OFDMA; bit error rate; channel estimation; curve fitting; high mobility; mean squared error; mobile WiMAX system; orthogonal frequency division multiple access; piecewise linear estimation; Bit error rate; Channel estimation; Curve fitting; Doppler shift; Downlink; Frequency estimation; Intersymbol interference; OFDM; Piecewise linear techniques; WiMAX; Mobile WiMAX; OFDMA; channel estimation;
Conference_Titel :
Advanced Communication Technology, 2008. ICACT 2008. 10th International Conference on
Conference_Location :
Gangwon-Do
Print_ISBN :
978-89-5519-136-3
DOI :
10.1109/ICACT.2008.4493872
