Automatic equalizer and data mode convergence method

Details Automatic equalizer and data mode convergence method Automatic equalizer and data mode convergence method

1995-05-15

1997-01-28

Chin, Stephen

Pulse or digital communications

Equalizers

Automatic

375232, 3647242, H04B 304

Patent

active

055984339

ABSTRACT:
An automatic equalizer which converges by a received signal and a data mode convergence method. A variance extracting unit extracts the variance of an output signal of a transversal automatic equalizing section and changes a predecision input signal to a proper level according to the extracted variance. A decision unit makes a decision for the predecision input signal which has been changed by the variance extracting unit and allocates the predecision input signal to a signal point. An amplitude error extracting unit extracts an amplitude error from a predecision input signal and a postdecision output signal of the decision unit and corrects the tap coefficients of the transversal automatic equalizing section according to the extracted amplitude error.

REFERENCES:
patent: 4615038 (1986-09-01), Lim et al.
patent: 5077755 (1991-12-01), Kaku et al.
patent: 5097482 (1992-03-01), Serizawa et al.
Fujitsu Scientific and Technical Journal, Digital Signal Processor by Toshitakea Tsuda et al., vol. 25, No. 3, 1989, pp. 171-192.
European Search Report dated Dec. 2, 1993.

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