基于卫星通信系统的多元 RC - LDPC 信息安全传输算法.

It is easy for signal transmission based on satellite communication to be received illegally through wireless channels, leading to information leakage. Therefore, we propose a non, binary RC-LDPC(rate compatible low density parity check) encoding method for satellite channel based on the existing physical layer security research, and apply the method to the AMC system. The algorithm uses channel state information to secrete the private information in the deleted position. By narrowing the gap of safety, the proposed method elevates the drop rate of error curve of the legal receiver to ensure information security. The algorithm was simulated and analyzed based on NI USRP and LabVIEW. The simulation results show that the proposed algorithm can guarantee the receiver to receive correctly and the bit error rate of eavesdropper up to about 0-, 5, ensuring the safe transmission of information. [ABSTRACT FROM AUTHOR]