Title :
Low-Complexity Block Turbo Equalization for OFDM Systems in Time-Varying Channels
Author :
Kun Fang ; Geert Leus
Author_Institution :
Dept. Electr. Eng., Delft Univ. of Technol., Netherlands
Abstract :
We propose a low-complexity block turbo equalizer for orthogonal frequency-division multiplexing (OFDM) systems in time-varying channels. The complexity of the proposed algorithm is linear in the number of subcarriers by exploiting the band structure of the frequency-domain channel matrix. The presented block turbo equalizer is based on a soft minimum mean squared error (MMSE) block linear equalizer (BLE).
Keywords :
OFDM modulation; equalisers; frequency-domain analysis; least mean squares methods; time-varying channels; wireless channels; MMSE; OFDM systems; block linear equalizer; frequency-domain channel matrix; low-complexity block turbo equalization; orthogonal frequency-division multiplexing; soft minimum mean squared error; time-varying channels; Bit error rate; Covariance matrix; Equalizers; Error correction codes; Intersymbol interference; Iterative methods; OFDM; Quadrature phase shift keying; Time domain analysis; Time-varying channels; OFDM; Turbo equalization; intercarrier interference; time-varying channels;
Conference_Titel :
Acoustics, Speech and Signal Processing, 2007. ICASSP 2007. IEEE International Conference on
Conference_Location :
Honolulu, HI
Print_ISBN :
1-4244-0727-3
DOI :
10.1109/ICASSP.2007.366568
