Adaptive equalizer using precursor error signal for convergence

Details Adaptive equalizer using precursor error signal for convergence Adaptive equalizer using precursor error signal for convergence

1987-08-12

1988-12-06

Griffin, Robert L.

Pulse or digital communications

Repeaters

Testing

3647242, 333 18, H04B 314

Patent

active

047899948

ABSTRACT:
Operation of a decision feedback equalizer is enhanced by measuring the intersymbol interference precursor effect on each symbol decision output and utilizing that measurement information to update equalizer, transversal filter, tap multiplier coefficients in a direction to reduce the precursor and postcursor effects. In one embodiment, the updated coefficient information is further utilized to adjust equalizer input signal sampling phase toward a time of maximum data signal eye opening.

REFERENCES:
patent: 3697689 (1972-10-01), Gibson
patent: 3792356 (1974-02-01), Kobayashi et al.
patent: 3898564 (1975-08-01), Waldhauer et al.
patent: 4170758 (1979-10-01), Tamburelli
patent: 4283788 (1981-08-01), Tamburelli
patent: 4288872 (1981-09-01), Tamburelli
patent: 4468786 (1984-08-01), Davis
patent: 4494242 (1985-01-01), Ehrenbard et al.
patent: 4504958 (1985-03-01), Tamburelli
patent: 4597088 (1986-06-01), Posti et al.
"Decision Feedback and Feedforward Receiver (for Rates Faster than Nyquist's)", by G. Tamburelli, CSELT Rapporti Tecnici--N. 2--GIUGNO 1976, pp. 97-105.
"Towards a Single Chip ISDN Transmission Unit", by K. J. Wouda et al, (ISSLS 86) The International Symposium on Subscriber Loops and Services, Sep. 29-Oct. 3, 1986, Tokyo, Japan, pp. 250-255.

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