Anti-burst technique based on Adaptive code rate adjust of Satellite-to-ground laser communication
- Paper number
IAC-15,B2,4,8,x28310
- Author
Dr. Chen Xin, Beijing Institute of Satellite Information Engineering, China Academy of Space Technology (CAST), China
- Coauthor
Mr. Li Shenyang, Beijing Institute of Satellite Information Engineering, China Academy of Space Technology (CAST), China
- Coauthor
Mr. Wang Zheng, Beijing Institute of Satellite Information Engineering, China Academy of Space Technology (CAST), China
- Year
2015
- Abstract
In the process of satellite-to-ground opticalcommunications, the damage of optical coherence field due to atmosphericturbulence can directly cause sudden, clustered communication error, thus affecting thecommunication performance in Intensity Modulation/Direct Detection (IM/DD)based high speed satellite-to-ground downlink optical communication system. In this paper, a kind of rate adaptive NB-LDPC code with was proposed。In the case of fixed decision threshold,a mutual feedback adaptiveanti-burst transmission model was established to address the problems of anti-bursts and shortenthe transmission delayby using the maximum fading length of the received signal ina certain interval as a parameter of adaptive rate adjustment and interleaving.The method can get the better anti-burst performance and significantly shorten the information transmission delayintroduced by the interleaver when comparing with the fixed modulation coding instructions.
- Abstract document
- Manuscript document
(absent)