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:
Nov. 20, 2001
Filed:
Oct. 30, 1998
Donald C. Wilcoxson, Redondo Beach, CA (US);
Eldad Perahia, Hermosa Beach, CA (US);
TRW Inc., Redondo Beach, CA (US);
Abstract
The present invention provides an open-loop method for determining uplink transmission power in a satellite communication system,that compensates for antenna pointing error attenuation and for rain attenuation. Satellite downlink signal,attenuation is measured. Antenna pointing information is then used in conjunction with antenna gain pattern information,to determine antenna pointing error attenuation. The measured downlink attenuation and antenna pointing error attenuation are then used to determine the amount of rain attenuation on the downlink,. The downlink attenuation information is then used to determine the amount of uplink,attenuation to be expected. Uplink transmission power levels are then adjusted accordingly to overcome the expected uplink,attenuation.