随机发送参考的多天线系统物理层安全传输算法

To transmit the information in secret with MIMO (multi-input multi-output) system, the security scheme based on the random reference is presented. In this scheme, the independent parallel channels are obtained by doing singular value decomposition. Then, the random pilot is sent to one of these channels, which encrypts the information carried on other parallel channels. Because of the discrepancy from the main channel, with the eavesdropping channel, the eavesdropper cannot decompose the independent random pilot channel to recover the information sent by transmitter. By the theoretical analysis and the simulation about the security after symbol decision module, we get a conclusion that, comparing with the existing arti cial noise scheme, the random reference algorithm can be safer.