Stream media security transmission method based on error code diffusion and noise aggregation

• Main Authors: REN PINYI, DU QINGHE, SUN LI, QIN PENGXIANG
• Format: Patent
• Language: Chinese; English
• Published: 12.03.2019
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention discloses a stream media security transmission method based on error code diffusion and noise aggregation. A physical layer encryption method combining network coding and feedback retransmission is designed by means of independent grouping correlation, and a legal sending end is used for carrying out physical layer coding through xor correlation, so that confidential data of different time slots is not directly exposed in a wireless channel. At an illegal wiretapping end, once a data packet in any odd time slot has an error code previously, all confidential data decoding can be directly influenced, so that the transmission security of confidential information is guaranteed. Compared with original noise aggregation, the scheme can provide higher security under the condition ofthe same coding complexity. 本发明公开了种基于误码扩散和噪声聚合的流媒体安全传输方法，利用独立分组相关设计了种联合网络编码与反馈重传的物理层加密方法，合法发送端通过异或相关进行物理层编码，使得不同时隙的保密数据不直接裸露在无线信道中。在非法窃听端，旦之前有任奇数时隙内的数据包发生误码，将会直接影响以后所有的保密数据解码，从而保障了保密信息的传输安全。与原有噪声聚合相比，所述方案可以在相同编码复杂度的情况下，提供更高的