Infrared and Laser Engineering, Volume. 47, Issue 11, 1122003(2018)
Research on CRC-LT coding performance in free space optical communication
Luby transform (LT) code is a rateless linear code, which has good channel adaptability and low complexity. A concatenated coding scheme of CRC code and LT code (CRC-LT code) was proposed to ensure the reliability of FSO system and improve the coding gain of LT code in FSO system by adjusting overhead. A new analytic model was developed to derive the data restoration probability with given conditions of channel. Finally, simulation experiments were performed over Gamma-Gamma channel model, and the relationships among data restoration probability, channel condition, SNR and overhead were given. The results show that CRC-LT code has better coding gain and can effectively enhance the reliability of the FSO system by increasing overhead.
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Cao Yang, Ren Fatao, Peng Xiaofeng, Zhang Xun, Chen Guo. Research on CRC-LT coding performance in free space optical communication[J]. Infrared and Laser Engineering, 2018, 47(11): 1122003
Category: 光通信与光传感
Received: Jun. 5, 2018
Accepted: Jul. 3, 2018
Published Online: Jan. 10, 2019
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