Multiple access spread spectrum switching methodology

摘要

A low-cost, low-power, low-complexity, small, high-reliability, robust, seamless satellite communication network is described. The network performs encoding of a user signal at the customer premises to enable routing of the user signal to an appropriate destination beam at the satellite requiring low power user signal processing. Routing information is embedded at the periphery of the network CPE's rather than at the satellite. Embedding the routing information in this way greatly reduces on-board switching complexity and increases signal to interference ratio for the user.

主权项

1. Destination equipment for receiving a plurality of encoded user signals including a specific encoded user signal, the specific encoded user signal being contained in a particular destination beam of a plurality of destination beams transmitted from on-board satellite equipment, the destination equipment comprising:
a first digital decoder comprising a processor and computer readable media containing computer readable instructions that, when executed by the processor, cause the first digital decoder to apply on the plurality of encoded user signals an orthogonal code previously applied to the particular destination beam by the on-board satellite equipment, wherein applying the orthogonal code extracts a subset of the plurality of encoded user signals that are received in the particular destination beam, to create a first intermediate digital signal; and a second digital decoder comprising a processor and computer readable media containing computer readable instructions that, when executed by the processor, cause the second digital decoder to apply on the first intermediate digital signal a destination user code previously applied to the specific encoded user signal by a terrestrial transmitter prior to a transmission to the on-board satellite equipment, wherein applying the destination user code extracts the specific encoded user signal from the subset of the plurality of encoded user signals.