Title :
Channel estimation iterative algorithm for OFDM systems based on windowed fourth Discrete Cosine Transform
Author :
Sun, Chengchao ; Zeng, Fanxin ; Guo, Liang ; Zhang, Zhenyu
Author_Institution :
Department of Information Engineering, Chongqing Communication Institute, 400035, China
Abstract :
The Pilot-Symbol Assisted Modulation (PSAM) is an usual channel method for OFDM systems. On the basis of Windowed the fourth Discrete Cosine Transform (WDCT-IV), a new channel estimation iterative algorithm for OFDM systems is proposed. By exploiting the characteristics of iterative detection, the proposed algorithm inhibits the additive white Gaussian noise (AWGN) and inter-carrier interference (ICI) more effectively. Simulation result shows that the technique is effective and the system performance is better than one of Ref.[11] under the multipath fading channels.
Keywords :
Channel estimation; Discrete cosine transforms; Interference; Iterative algorithm; Iterative methods; Mobile communication; OFDM; channel estimation; inter-carrier interference; iterative algorithm; orthogonal frequency division multiplexing ( OFDM); the fourth discrete cosine transform;
Conference_Titel :
Information Science and Engineering (ICISE), 2010 2nd International Conference on
Conference_Location :
Hangzhou, China
Print_ISBN :
978-1-4244-7616-9
DOI :
10.1109/ICISE.2010.5689996
