Multiple-input hybrid frequency-time domain DFE over time-varying rayleigh-fading channel

Abdelhakim Youcef (1, 2) , Christophe Laot (3, 1) , Karine Amis Cavalec (3, 1)

1 SC - Département Signal et Communications
2 Lab-STICC - Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance
3 Lab-STICC_TB_CACS_COM

In this paper, a multiple-input hybrid frequency-time domain decision feedback equalizer is proposed to deal with the intersymbol interference in time-varying frequency-selective channels. To track the time-variation in the channel, block-based adaptive processing is considered where the equalizer taps are iteratively updated with a decision directed mode. In addition, we apply the overlap-and-save technique at the receiver. This technique makes it possible to remove the overhead due to the transmission of cyclic-prefix over each block of data, such as in usual frequency-domain equalization systems. The use of multiple-input at the receiver improves the tracking of fast time-varying channels. The proposed structure is simulated over fast time-varying and frequency-selective Rayleigh-fading channel models.

Domaines: Traitement du signal et de l'image [eess.SP]

Abdelhakim Youcef, Christophe Laot, Karine Amis Cavalec. Multiple-input hybrid frequency-time domain DFE over time-varying rayleigh-fading channel. DAT 2014 : 6ème séminaire sur les systèmes de Detection : Architectures et Technologies, Feb 2014, Alger, Algeria. ⟨hal-00966478⟩