Adaptive blind equilization method and device

Details Adaptive blind equilization method and device Adaptive blind equilization method and device

1987-02-27

1989-07-11

Ruggiero, Joseph

Boots, shoes, and leggings

333 18, 3647242, 375 15, G06V 100, H04B 304

Patent

active

048477974

ABSTRACT:
An adaptive blind equalization method and device uses self-decisions both in the convergence phase and the steady-state phase, making it possible to obtain a good and smooth adaptation in the convergence phase and a low error probability for the decided symbols in the steady state phase. By using the self-decided error and a reference error, a binary consent function is constructed which tells when it is allowed to proceed with the adaptation and when the adaptation should not be used. The binary consent function compares the self-decided error sign with the reference error sign and is based on the discovery that in certain areas of the symbol constellation plane, when the signs of the previous errors are equal, there is a high probability that the self-decided error signs and true error signs (unknown) will also be equal.

REFERENCES:
patent: 4021738 (1977-05-01), Gitlin et al.
patent: 4027258 (1977-05-01), Perreault
patent: 4438521 (1984-03-01), Mattei
patent: 4547889 (1985-10-01), Picchi et al.
patent: 4564952 (1986-01-01), Karabinis et al.

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