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. On-board satellite equipment for combining received digital user signals from a plurality of origination beams to produce a plurality of destination beams, the satellite 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 a received digital signal a first code unique to a particular received origination beam to extract digital user signals received in the particular origination beam to create a first intermediate digital signal; a digital summing circuit comprising a processor and computer readable media containing computer readable instructions that, when executed by the processor, cause the digital summing circuit to combine the first intermediate digital signal with isolated user signals from other origination beams to produce a summation signal, 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 summation signal a second code to extract digital user signals of the summation signal that are destined for a particular destination beam, to produce other isolated user signals from the plurality of origination beams and destined for the particular destination beam; and a digital encoder comprising a processor and computer readable media containing computer readable instructions that, when executed by the processor, cause the digital encoder to apply on the other isolated user signals a third code for further isolating the particular destination beam.