Processing of two noise contaminated, substantially identical si

Details Processing of two noise contaminated, substantially identical si Processing of two noise contaminated, substantially identical si

1976-02-20

1977-02-15

Heyman, John S.

325474, 325477, 179 1P, 328167, H03B 104

Patent

active

040084396

ABSTRACT:
When two substantially identical signals contaminated by uncorrelated noise are received over two channels, combining of the contaminated signals in a linear manner results in a maximum signal-to-noise ratio improvement of 3 dB. The present disclosure relates to combining such contaminated signals through a process whose parameters vary as short time functions of the signal and noise powers in each channel. This processing produces a signal-to-noise ratio improvement which is greater than that achievable through linear processing.

REFERENCES:
patent: 3644674 (1972-02-01), Mitchell et al.
patent: 3652939 (1972-03-01), Levasseur
patent: 3728634 (1973-04-01), Watkinson
patent: 3737783 (1973-06-01), Oswald et al.
patent: 3869673 (1975-03-01), Close
patent: 3911369 (1975-10-01), Seidel
patent: 3943468 (1976-03-01), Cox et al.

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