Title :
Doppler spread estimation for mobile OFDM systems in Rayleigh fading channels
Author :
Cai, Jueping ; Song, Wentao ; Li, Zan
Author_Institution :
Shanghai Jiao Tong Univ., China
Abstract :
In this paper, a technique based on the autocorrelation function is proposed to estimate the Doppler spread in Rayleigh fading channels for mobile OFDM systems. It is simply implemented with the cyclic structure of OFDM symbols, and any other additive data and pilots need not to be inserted into the common OFDM symbols. This algorithm can be applied directly to the OFDM system with transmit diversity (TD) and to MIMO OFDM systems. Computer simulation results are included to support our developments in the terms of mean estimation value and mean square error.
Keywords :
AWGN channels; MIMO systems; OFDM modulation; Rayleigh channels; channel estimation; diversity reception; mean square error methods; mobile communication; Doppler spread estimation; MIMO systems; Rayleigh fading channels; additive white Gaussian noise; autocorrelation function; mean estimation value; mean square error; mobile OFDM systems; multipath interference; multiple input multiple output system; orthogonal frequency division multiplexing; transmit diversity; Application software; Autocorrelation; Channel estimation; Computer simulation; Fading; MIMO; Mean square error methods; Modulation coding; OFDM modulation; Rayleigh channels;
Journal_Title :
Consumer Electronics, IEEE Transactions on
DOI :
10.1109/TCE.2003.1261183
