Patent ID: 9287978
Filing Date: 2016-03-15
CPC Classification: H04B

Claim Text:
1. A system for communication between two communication platforms, comprising: a near-earth returning platform including a laser and a heterodyne modulator coupled to the laser, wherein the heterodyne modulator is configured to modulate laser light received from the laser according to a heterodyne modulation; and a remote platform including a laser and an amplitude modulator coupled to the laser, wherein the amplitude modulator is configured to modulate laser light received from the laser according to an amplitude modulation; and a bidirectional asymmetrical communication link that couples the near-earth returning platform and the remote platform, wherein the bidirectional asymmetrical communication link includes an uplink communication link from the near-earth returning platform to the remote platform carrying heterodyne modulated signals and a downlink communication link from the remote platform to the near-earth returning platform carrying amplitude modulated signals.