H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 7/185 (2006.01) H04B 7/204 (2006.01) H04L 1/00 (2006.01)
Patent
CA 2117941
14 FREQUENCY REUSE TECHNIQUE FOR A HIGH DATA RATE SATELLITE COMMUNICATION SYSTEM ABSTRACT Frequency reuse (70) and data coding methods (80, 90) for use in a high data rate satellite communication system (10). The frequency reuse method (70) provides for dual polarization and spatial reuse of transmit and receive beams to provide for a twelve-fold increase in the effective bandwidth and number of users that may be supported by the system (10). Transmit and receive antennas provides multiple, inter- leaved transmit and receive antenna beams. Digital input data at a source user terminal is coded and transmitted from a source user terminal on one of the plurality of receive antennas is demodulated. The received data is demodulated demodulated and is routed so that it may be transmitted to a destination user terminal. The data is then remodulat- ed, multiplexed, and transmitted to the destination user terminal on one of the plurality of transmit beams. The transmitted data is decoded at the destination user terminal to produce the output data. The input and output data processed by the system is digital, and the coding (concatenated coding forward error correction processing) is employed to reduce the sensitivity of communicated data to interference. The presently preferred encoding method comprises Reed-Solomon encoding (42) input data, interleaving (43) the encoded data, and convolutionally encoding (44) the interleaved data and then time division multiplexing (45) and modulating (46) the data. The presently preferreddecoding method comprises demodulating (56) and demultiplexing (57) received time division multiplexed data, Viterbi decoding (58) the demultiplexed data, deinterleaving (59) the Viterbi decoded data, and Reed-Solomon decoding (60) the deinterleaved data to produce the output data. Other multiplexing schemes may alternatively be employed. The demodulating and demodulating steps regenerates a high quality digital data stream on the satellite that is communicated to the destination terminal to reduce the effects of uplink interference upon the downlink data stream.
Reinhardt Victor S.
Rosen Harold A.
Strodtbeck Andrew L.
Vollbrecht Jennifer L.
Hughes Electronics Corporation
Sim & Mcburney
LandOfFree
Frequency reuse technique for a high data rate satellite... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Frequency reuse technique for a high data rate satellite..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frequency reuse technique for a high data rate satellite... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-2039717