Importance

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Abstract

A method for maximizing satellite downlink information rate is disclosed. A ground transmitter (102) applies an outer block code to a data channel, modulates it, and transmits an uplink data stream (104) to a satellite (106) which demodulates the uplink data stream to produce a demodulated uplink data stream consisting of 1 to N user channels (230). The method uses a first multiplexer (232) to produce 1 to M multiplexed data signals (234) which are fed into quality encoders (236). The quality encoders (236) encode the multiplexed data signals (234) according to a selected quality level to produce custom-coded data signals (238). The level of coding applied to the custom-coded data signals (238) may be controlled by information received by a channel measurement element (250). Next, the method passes the custom-coded data signals (238) into a second multiplexer (240) which produces one multiplexed data stream (242). The multiplexed data stream (242) is then fed into the satellite's modulator before transmission back to a ground receiver.

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First Claim