Process and device for detecting loss of carrier recovery and of

Pulse or digital communications – Testing – Signal noise

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375329, H04B 346

Patent

active

061083739

ABSTRACT:
A process of determining the Eb/No ratio of a digital transmission is applied to a signal having a plurality of phases made up of two data streams in phase quadrature providing in each symbol time a received sample whose position in the constellation is defined by its coordinates obtained by quantizing the data streams. This process determines the number of erroneous samples received during a given time period whose coordinates correspond to those of indicative samples, the coordinates of the indicative samples being different from those of optimal samples received under optimal transmission conditions. The process then calculates the ratio between the number of erroneous samples and the total number of samples received in this time period, the calculated ratio being inversely proportional to the Eb/No ratio.

REFERENCES:
patent: 4381546 (1983-04-01), Armstrong
patent: 4449222 (1984-05-01), Crossett III, et al.
patent: 4555790 (1985-11-01), Betts et al.
patent: 4633465 (1986-12-01), Fitch et al.
patent: 4773083 (1988-09-01), Baumbach et al.
patent: 4827431 (1989-05-01), Goldstein
patent: 4991184 (1991-02-01), Hashimoto
patent: 5216697 (1993-06-01), Ohnuki
patent: 5333147 (1994-07-01), Nohara et al.
patent: 5438591 (1995-08-01), Oie et al.
patent: 5440582 (1995-08-01), Birchler et al.
patent: 5440590 (1995-08-01), Birchler et al.

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