초록 ▼

Uplink transmission and reception techniques for a processing satellite including one or more earth terminals 400 connected to receive ATM data cells. One or more encoders 418 are connected to coordinate four data cells with an error correction code to generate data bursts and to coordinate the data

Uplink transmission and reception techniques for a processing satellite including one or more earth terminals 400 connected to receive ATM data cells. One or more encoders 418 are connected to coordinate four data cells with an error correction code to generate data bursts and to coordinate the data bursts with synchronizing bursts to generate data frames. One or more modulators 420 are connected to modulate the data frames by frequency division multiple access modulation to enable placement of the modulated data frames into a plurality of channels. One or more antennas 406 transmit the modulated data frames to a satellite 100 over 48 beams with various forms of polarization.In satellite 100, a receiving multibeam antenna and feed 106 responds to one or more beams of radiocarrier signals having one or more forms of polarization. One or more demodulators 138 demodulate the radio carrier signals into data frames from various channels including a plurality of channel types. One or more decoders 146 decode data bursts and synchronizing bursts from the data frames and decode four data cells from the bursts using error correction code.

대표청구항 ▼

1. Apparatus for generating and transmitting data in an available spectrum of frequencies suitable for use by a processing communication satellite comprising in combination:one or more earth terminals connected in order to provide data cells and a synchronizing burst timing signal; one or more encod

1. Apparatus for generating and transmitting data in an available spectrum of frequencies suitable for use by a processing communication satellite comprising in combination:one or more earth terminals connected in order to provide data cells and a synchronizing burst timing signal; one or more encoders connected in order to group a predetermined number of the data cells with a selectable one of a predetermined first error correction code having a first code rate and a predetermined second error correction code having a second code rate to generate data bursts and to group the data bursts with synchronizing bursts timed in response to said synchronizing burst timing signal in order to generate data frames selected from a group of data frame types, said first code rate being a multiple of said second code rate; one or more modulators connected to modulate the data frames by a predetermined form of modulation to enable placement of the modulated data frames into a plurality of channels selected from a group of channel types having a plurality of channel rates definable in symbols per second; and one or more antennas connected to transmit the modulated data frames to the satellite over one or more beams with a predetermined form of polarization.