Pre-cancelling postcursors in decision feedback equalization

Details Pre-cancelling postcursors in decision feedback equalization Pre-cancelling postcursors in decision feedback equalization

1996-03-15

1997-12-02

Chin, Stephen

Pulse or digital communications

Equalizers

Automatic

375232, H03H 730, H03H 740, H03K 5159

Patent

active

056944241

ABSTRACT:
The complexity and training time of decision-feedback equalization (DFE) structures for use in broadband wireless communications are reduced. A modified DFE structure is able to pre-cancel postcursors in the received signal without requiring training of the feedback filter. In the modified DFE structure, an estimated channel impulse response is used in the feedback section. The output of the feedback section is passed to the feedforward filter to cancel the postcursors before convolving the result of the cancellation with the feedforward filter tap gains. Therefore, only the feedforward filter needs to be trained. In broadband wireless channels, the modified DFE structure can potentially speed up the training process by ten to twenty times compared to conventional structures.

REFERENCES:
patent: 4271525 (1981-06-01), Watanabe
patent: 4359778 (1982-11-01), Lee
patent: 5117291 (1992-05-01), Fadavi-Adekani et al.
patent: 5155742 (1992-10-01), Ariyavisitakul et al.
patent: 5228058 (1993-07-01), Ushirokawa et al.
patent: 5285474 (1994-02-01), Chow et al.
patent: 5371471 (1994-12-01), Cheanakeshu et al.
patent: 5513214 (1996-04-01), Gozzo
patent: 5530721 (1996-06-01), Inoue et al.
patent: 5533067 (1996-07-01), Jamal et al.
patent: 5539774 (1996-07-01), Nobakht et al.
patent: 5541956 (1996-07-01), Ueda

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