Device and method for estimating sampled value of impulse respon

Details Device and method for estimating sampled value of impulse respon Device and method for estimating sampled value of impulse respon

1991-07-03

1994-03-01

Kuntz, Curtis

Pulse or digital communications

Repeaters

Testing

375 14, 3647242, H04L 2706

Patent

active

052915220

ABSTRACT:
In a device for estimating a sampled value of an impulse response from input and output signals of a decision circuit which performs a signal decision procedure for reproducing a digital signal, there are provided a first part, operatively coupled to the decision circuit, for generating a first average of absolute values of samples of decided values obtained from the output signal of the decision circuit. A second part is also provided, operatively coupled to the decision circuit, for generating a second average of absolute values of samples of equalized outputs obtained from the input signal of the decision circuit. Also provided is a third part, operatively coupled to the first and second parts for generating a ratio of the first average and the second average, with the ratio being an estimate of the sampled value of the impulse response at a sampling point.

REFERENCES:
patent: 4530104 (1985-07-01), Kamerman
patent: 4564952 (1986-01-01), Karabinis et al.
patent: 4567599 (1986-01-01), Mizoguchi
patent: 4599732 (1986-07-01), LeFever
patent: 4718073 (1988-01-01), Takaoka
patent: 4800573 (1989-01-01), Cupo
patent: 4815103 (1989-03-01), Cupo et al.
IEEE International Conference on Communications-ICC/89, Jun. 11-14, 1989, Boston, Mass., US, vol. 1, pp. 233-238.

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