Title :
Channel estimation for OFDM systems with ICI
Author :
Liu, Siyang ; Wang, Feifei ; Zhang, Ranran ; Liu, Yuanan
Author_Institution :
Beijing Univ. of Posts & Telecommun., Beijing
Abstract :
In this paper, a novel channel estimator is proposed for orthogonal frequency-division multiplexing (OFDM) systems with intercarrier interference (ICI). This estimator includes two parts: the channel parameter estimation unit (CPEU) and the channel coefficient estimation unit (CCEU). In CPEU, two channel parameters, the number of channel taps and the multipath time delays, are estimated. In CCEU, the channel coefficients are estimated by utilizing the over-sampling basis expansion model (OBEM) and the channel parameters provided by CPEU. Simulation results are given to show the effectiveness of the proposed method.
Keywords :
OFDM modulation; channel estimation; delays; intercarrier interference; multipath channels; parameter estimation; ICI; OFDM systems; channel coefficient estimation unit; channel parameter estimation unit; intercarrier interference; multipath time delays; orthogonal frequency-division multiplexing systems; over-sampling basis expansion model; Channel estimation; Delay effects; Delay estimation; Fading; Frequency division multiplexing; Frequency estimation; Interference; OFDM; Parameter estimation; Sampling methods;
Conference_Titel :
Communications and Networking in China, 2008. ChinaCom 2008. Third International Conference on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4244-2373-6
Electronic_ISBN :
978-1-4244-2374-3
DOI :
10.1109/CHINACOM.2008.4685193
