Title :
Blind channel identification in SIMO-OFDM systems
Author :
Wei Bai ; Haifen Yang ; Zhiyong Bu
Author_Institution :
Shanghai Res. Center for Wireless Commun., China
Abstract :
The problem of blind channel identification in SIMO-OFDM systems is considered. It is shown in this paper that the SIMO-OFDM channel is identifiable, given only a received data set obtained over one SIMO-OFDM symbol duration, by exploiting the finite alphabet property of the input data. A maximum-likelihood (ML) method for blind channel and data identification in SIMO-OFDM systems is developed. Finally, we demonstrate the validity of the ML method by computer simulations.
Keywords :
OFDM modulation; blind source separation; maximum likelihood estimation; mobile radio; SIMO-OFDM symbol duration received data set; SIMO-OFDM systems; blind channel identification; data identification; identifiability; input data finite alphabet property; maximum-likelihood method; mobile wireless links; AWGN; Additive white noise; Decoding; Frequency conversion; Gaussian noise; Maximum likelihood estimation; OFDM modulation; Receiving antennas; Space technology; Wireless communication;
Conference_Titel :
Communications, Circuits and Systems, 2004. ICCCAS 2004. 2004 International Conference on
Conference_Location :
Chengdu
Print_ISBN :
0-7803-8647-7
DOI :
10.1109/ICCCAS.2004.1346078
