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

fYear

2008

fDate

March 31 2008-April 4 2008

Firstpage

2909

Lastpage

2912

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech and Signal Processing, 2008. ICASSP 2008. IEEE International Conference on

Conference_Location

Las Vegas, NV

ISSN

1520-6149

Print_ISBN

978-1-4244-1483-3

Electronic_ISBN

1520-6149

Type

conf

DOI

10.1109/ICASSP.2008.4518258

Filename

4518258