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:
Apr. 24, 1998
Eldad Perahia, Hermosa Beach, CA (US);
Donald C. Wilcoxson, Redondo Beach, CA (US);
Chamroeun Kchao, San Jose, CA (US);
TRW Inc., Redondo Beach, CA (US);
Abstract
A method for maximizing satellite downlink information rate is disclosed. A ground transmitter (,) applies an outer block code to a data channel, modulates it, and transmits an uplink data stream (,) to a satellite (,) which demodulates the uplink data stream to produce a demodulated uplink data stream consisting of 1 to N user channels (,). The method uses a first multiplexer (,) to produce 1 to M multiplexed data signals (,) which are fed into quality encoders (,). The quality encoders (,) encode the multiplexed data signals (,) according to a selected quality level to produce custom-coded data signals (,). The level of coding applied to the custom-coded data signals (,) may be controlled by information received by a channel measurement element (,). Next, the method passes the custom-coded data signals (,) into a second multiplexer (,) which produces one multiplexed data stream (,). The multiplexed data stream (,) is then fed into the satellite's modulator before transmission back to a ground receiver.