The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 18, 1991
Filed:
Dec. 13, 1989
Applicant:
Inventor:
Bertrand Hurinville, Levallois-Perret, FR;
Assignee:
Alcatel Transmission par Faisceaux Hertziens, Cedex, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
375 10 ; 371-51 ; 371 201 ; 36472401 ; 375 60 ;
Abstract
A method of measuring the signature of digital transmission equipment, in which the measurement can be performed during operation without adding special apparatus, and in which: the digital filtering on transmission is varied in order to simulate multiple paths; and the depth of fading is varied at each of a plurality of frequencies until a predetermined error rate is obtained. The invention also provides apparatus for implementing the method. The invention is particularly suitable for use with digital radio links.