Title of Invention

METHOD AND APPARATUS FOR DETERMINING AN OPERATING POINT OF A NON-LINEAR AMPLIFIER OF A COMMUNICATION CHANNEL

Abstract Method for determining an operating point of a non-linear amplifier of a communication channel through which a payload signal is transmitted at a predetermined levelcomprising: - generating a first pseudo noise signal PN(t); - modulating a clean carrier signal f(t) with said first pseudo noise signal PN(t) to generate a PN modulated clean carrier signal s(t); -transmitting said PN modulated clean carrier signal s(t) simultaneously with said payload signal through said communication channel at a level below the level of said payload signal; - receiving a receive signal s'(t) corresponding to said PN modulated clean carrier signal s(t) after having traveled through - said communication channel;correlating said receive signal s'(t) with said first pseudo noise signal PN(t)to generate a recovered carrier signal f'(t); and - determining the operating point of said non-liner amplifier of the communication channel on the basis of said clean carier signal f(t)and said recovered carrier signal f'(t).
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Documents:


Patent Number 203241
Indian Patent Application Number IN/PCT/2000/0083/KOL
PG Journal Number 10/2007
Publication Date 09-Mar-2007
Grant Date 09-Mar-2007
Date of Filing 16-Jun-2000
Name of Patentee SES ASTRA S.A.
Applicant Address CHATEAU DE BETZDORF, L-6915 BETZDORF, LUXEMBOURG.
Inventors:
# Inventor's Name Inventor's Address
1 HARLES, GUY 48A RUE DE 9 MAI 1944, L-2112, HOWALD, LUXEMBOURG.
2 BETHSCHEIDER, GERHARD WIESENWEG 12, D-54441 AYL, GERMANY
PCT International Classification Number H 04B 17/00
PCT International Application Number PCT/EP98/08306
PCT International Filing date 1998-12-17
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 97 122 420.9 1997-12-18 EUROPEAN UNION