Title :
A modified decision directed channel tracking of 802.11p OFDM system
Author :
Chou, Kao-Peng ; Sun, Che-Kang
Author_Institution :
Dept. of Commun. Eng., Nat. Central Univ., Jhongli, Taiwan
Abstract :
A modified decision directed channel interpolation techniques of orthogonal frequency-division multiplexing (OFDM) system is proposed in this paper. The decision directed channel tracking method in OFDM system always encounters the error propagation problem. To make a practical design, the modified decision directed method in this paper is a low complexity algorithm which can lower the effect of decision error propagation. Simulation results show that the proposed algorithm outperform conventional block interpolations as the SNR exceed certain level.
Keywords :
OFDM modulation; block codes; interpolation; least squares approximations; OFDM system; block interpolations; error propagation problem; interpolation techniques; modified decision directed channel tracking; Channel estimation; Channel models; Frequency domain analysis; Heuristic algorithms; Interpolation; Mobile communication; OFDM; channel tracking; least squares (LS) channel estimation; low complexity; reliable coefficient;
Conference_Titel :
ITS Telecommunications (ITST), 2011 11th International Conference on
Conference_Location :
St. Petersburg
Print_ISBN :
978-1-61284-668-2
DOI :
10.1109/ITST.2011.6060140
