Data receiving system using a decision feedback equalizer

Details Data receiving system using a decision feedback equalizer Data receiving system using a decision feedback equalizer

1996-10-25

1999-08-31

Vo, Don

Pulse or digital communications

Equalizers

Automatic

375231, 708323, H03H 730, H03K 5159

Patent

active

059463503

ABSTRACT:
A data receiving system, for equalizing a reception signal by using a decision feedback equalizer when the reception signal is formatted to have a sync signal positioned at the center of a burst, comprises a receiving buffer for storing reception data, training calculation means for obtaining a tap coefficient by performing a training using the sync signal involved in the reception data, a direction selecting means for selecting a preferable direction for a tracking of the decision feedback equalizer, based on a judgement as to which direction is preferable for the decision feedback equalizer between the direction identical with the receiving sequence of the reception data and the direction opposed to the receiving sequence of the reception data, and a tracking calculation means for performing the calculation of the decision feedback equalizer by tracking the reception data along the preferable direction using the tap coefficient given from the training calculation means having executed the training along the preferable direction selected by the direction selecting means. With this arrangement, the decision feedback equalizer can be used in the minimum phase transition which is the most effective condition for the DFE, thereby enhancing the effect of compensating the distortion derived from the multipath fading.

REFERENCES:
patent: 5155742 (1992-10-01), Ariyavisitakul et al.
patent: 5222101 (1993-06-01), Ariyavisitakul et al.
patent: 5274670 (1993-12-01), Serizawa et al.
Yow-Jong Liu et al: "A Soft-Output Bidirectional Decision Feedback Equalization Technique for TDMA Cellular Radio", IEEE Journal on Selected Areas in Communications, vol. 11, No. 7, Sep. 1, 1993, pp. 1034-1045, XP000400013.

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