Title :
Research of Inter Carrier Interference cancellation for highly mobile OFDM system
Author :
Zhou, Kai ; Xiao, Liyong
Author_Institution :
Dept. of Inf. & Commun. Eng., Harbin Eng. Univ., Harbin, China
Abstract :
Current channel estimation schemes for OFDM systems track channel variations symbol by symbol result in Inter Carrier Interference(ICI) when the channel is Time-varying in one symbol period.After studing a low-complexity ICI self-cancellation scheme,this paper combines the ICI self-cancellation scheme with a data detection and channel equalisation algorithm which is based on the space alternating generalised expectation-maximisation (SAGE) technique. The simulation validates the efficiency of the proposed scheme.
Keywords :
OFDM modulation; channel estimation; expectation-maximisation algorithm; intercarrier interference; interference suppression; mobile radio; time-varying channels; SAGE technique; channel equalisation algorithm; channel estimation; channel variation symbol; intercarrier interference cancellation; low-complexity ICI self-cancellation scheme; mobile OFDM system; space alternating generalised expectation-maximisation; time-varying channel; Channel estimation; Fading; Interference cancellation; Mobile communication; Nickel; OFDM; Wireless communication; ICI; OFDM; signal detection; time varying channel estimation;
Conference_Titel :
Electrical and Control Engineering (ICECE), 2011 International Conference on
Conference_Location :
Yichang
Print_ISBN :
978-1-4244-8162-0
DOI :
10.1109/ICECENG.2011.6057154
