Title :
Iterative channel estimation and turbo equalization for time-varying OFDM systems
Author :
Fang, Kun ; Rugini, Luca ; Leus, Geert
Author_Institution :
Dept. Electr. Eng., Delft Univ. of Technol., Delft
fDate :
March 31 2008-April 4 2008
Abstract :
We develop a new receiver for orthogonal frequency division multiplexing (OFDM) systems in time-varying channels by embedding channel estimation in a low-complexity block turbo equalizer. A linear minimum mean squared error (MMSE) pilot-assisted channel estimator is presented, and the soft data estimates from the turbo equalizer are used to improve the quality of the channel estimates.
Keywords :
OFDM modulation; channel estimation; equalisers; iterative methods; least mean squares methods; time-varying channels; iterative channel estimation; linear minimum mean squared error; low-complexity block turbo equalizer; orthogonal frequency division multiplexing systems; pilot-assisted channel estimator; time-varying OFDM systems; time-varying channels; turbo equalization; Bit error rate; Channel estimation; Doppler shift; Equalizers; Frequency estimation; Iterative decoding; Neodymium; OFDM; Time varying systems; Time-varying channels; OFDM; channel estimation; intercarrier interference; time-varying channels; turbo equalization;
Conference_Titel :
Acoustics, Speech and Signal Processing, 2008. ICASSP 2008. IEEE International Conference on
Conference_Location :
Las Vegas, NV
Print_ISBN :
978-1-4244-1483-3
Electronic_ISBN :
1520-6149
DOI :
10.1109/ICASSP.2008.4518258
