公开(公告)号：US09985986B2

公开(公告)日：2018-05-29

申请号：US15306094

申请日：2015-06-26

Applicant: University of Electronic Science and Technology of China

Inventor： Hong Wen ,  Jie Tang ,  Da Xiang ,  Huanhuan Song

IPC: H04L29/06 ,  H04B7/06 ,  H04B7/0456

CPC classification number: H04L63/1475 ,  H04B7/0456 ,  H04B7/0617 ,  H04L1/06 ,  H04L9/0875 ,  H04L63/0428 ,  H04W12/12

Abstract: The present invention discloses an unconditional secure communication method based on beam-forming and security code, which comprises the following steps of: Legitimate users send to the signal pie-encoded and modulated, meanwhile eavesdropper receives signals and calculates the bit error rate; computing security coding parameters, legitimate received users send pilot sequence, and legitimate sending users estimate legitimate channel, and extract information on legal channel coding and modulating signal was SVD pre-coding and sending; the signal was decoded, that will be judgment and demodulation then the signal after decoding do security code is transmitted to message or tapping, due to lack of legal channel information, eavesdropper cannot lift pre-coding processing of the received signal with the high bit error rate. This method can establish advantages channel of the wiretap model channel and to ensure that legitimate users can receive signals at the lower bit error rate.