Security Coding Scheme for Satellite Communications

The major goal of a secure coding is to enable the authentic receiver could successfully recover the original message from the source. However. the satellite communications provide an open wireless environment. It hardly protects the transmitted information from the eavesdroppers. Usually, the secure system employs the encryption, authorization and authentication schemes to avoid from the attacks. However, the undesired attacks have been continuously developed. In order to reduce the computing resource exhausted in the encryptions. Physical layer security coding based on Shannon’s perfect secrecy, error-free cryptogram, might be applied to the satellite communications. Moreover, the coding scheme could reach the required critical security capacity. Also, it could approach the low error probability. However, the information rate and the coding rate will suffer the system performance. To tradeoff the security level, information rate and coding rate could be the important issue in the satellite communications.