Data receiver comprising a control loop with reduced sampling fr

Details Data receiver comprising a control loop with reduced sampling fr Data receiver comprising a control loop with reduced sampling fr

1992-03-10

1994-05-10

Chin, Stephen

Pulse or digital communications

Repeaters

Testing

375101, 375 14, 370 321, H04B 110

Patent

active

053115589

ABSTRACT:
For reducing the complexity of adaptive systems such as equalizers, echo cancellers and clock recovery systems, errors are often determined only once per n samples, where n is an integer. If the input signal of such an adaptive system comprises cyclostationary components, it may occur that the adaptive system does not converge to a desired value. By selecting n in such a way that the greatest common divisor of n and the cyclostationary period m of the input signal is equal to 1, convergence of the adaptive system is ensured.

REFERENCES:
patent: 4564952 (1986-01-01), Karabinis et al.
patent: 4905254 (1990-02-01), Bergmans
patent: 4959845 (1990-09-01), Tol et al.
patent: 5163044 (1992-11-01), Golden
IEEE Trans. on Communications, Sep. 1982, p. 18.
"Line Coding for Digital Data Transmission", Telecom Australia Research Laboratories, vol. 11, No. 2, 1977, pp. 14-27.
R. W. Lucky, "Techniques for Adaptive Equalization of Digital Communications Systems", The Bell Technical Journal, Feb. 1966, pp. 255-286.
"Two New Ternary Line Codes", Electronic Letters, 22nd Nov. 1990, vol. 26, No. 24, pp. 1989-1990.
T. A. C. M. Claasen & W. F. J. Mecklenbrauker, "Comparison of the Convergence of Two Algorithms for Adaptive FIR Digital Filters", IEEE Transactions on Circuits and Systems, vol. CAS-28, No. 6, Jun. 1981, pp. 510-518.

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