Title :
Channel Estimation for OFDM Systems with Asymmetric Pilot Symbols
Author :
Chen, Chao-Wei ; Wei, Shyue-Win
Author_Institution :
Dept. of Electr. Eng., Nat. Chi Nan Univ., Puli, Taiwan
Abstract :
A time-varying channel estimation method for orthogonal frequency division multiplexing (OFDM) systems is presented. The proposed method makes use of two asymmetric pilot symbols to improve channel estimation performance and meanwhile obtain a reasonable pilot overhead. Complete simulations illustrate that the proposed method can have precise estimation result even under very large normalized Doppler frequency.
Keywords :
OFDM modulation; channel estimation; radio networks; radio receivers; Doppler frequency; OFDM systems; asymmetric pilot symbols; orthogonal frequency division multiplexing systems; time-varying channel estimation; Broadband communication; Channel estimation; Chaotic communication; Communications Society; Fast Fourier transforms; Frequency domain analysis; Frequency estimation; Interpolation; OFDM modulation; Time-varying channels;
Conference_Titel :
Wireless Communications and Networking Conference (WCNC), 2010 IEEE
Conference_Location :
Sydney, NSW
Print_ISBN :
978-1-4244-6396-1
DOI :
10.1109/WCNC.2010.5506752
