Study Of Space Laser Emission Technology Based On MIMO

MIMO technology is a kind of don’t need to increase the transmission power and Spectrum resources,Only by increasing the number of transmitter and the receiver antenna,Thus greatly improve the transmission rate of original system and channel capacity, Therefore they are widely used in radio frequency in the field of communications. And in the field of space laser communication, MIMO technology is not yet perfect, need to continue to study.This paper made a comprehensive analysis of MIMO technology,And established the channel model of MIMO system.Design a set of laser space launch system framework based on MIMO,Analysis of the key technologies of MIMO systems,Choose the Key components Device of the system,Include:generating laser,Modulator optical amplifier, optical splitter, etc.And has carried on the debugging to each launch link.EDFA design and the optical power control circuit,And design the laser temperature control circuit and the modulation circuit. Finally use OptiSystem simulation software,Set the device specific parameters,Analog communication environment,Obtained satisfactory results,Verify the reliability of the system.