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Widely linear decision-feedback equalizer for time-dispersive linear MIMO channels

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3 Author(s)
Mattera, D. ; Dipt. di Ingegneria Elettronica e delle Telecomunicazioni, Univ. degli Studi di Napoli Federico II, Italy ; Paura, L. ; Sterle, F.

The paper deals with the transmission over multiple-input/multiple-output channels exhibiting time-dispersion. A minimum mean-square error equalizer based on widely linear processing combined with the decision-feedback (DF) strategy is implemented via finite-impulse-response filters. The proposed equalizer provides considerable performance gain at the expense of a limited increase in computational complexity. The performance analysis has been carried out accounting for mismatch conditions always present in practice. The results confirm the stronger sensitivity of the DF-based equalizers with respect to the feedforward-based ones when system parameters are not accurately known.

Published in:

Signal Processing, IEEE Transactions on  (Volume:53 ,  Issue: 7 )

Date of Publication:

July 2005

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