利用协作技术实现无线通信物理层安全的方案

物理层安全技术是利用无线信道的衰落和噪声,使合法接收者获得保密信息的疑义度大于窃听者得到的保密信息的疑义度,实现安全传输.利用中继解码转发协作技术可以在窃听信道好于合法信道条件时,帮助主信道实现安全传输.现有研究只是考虑了中继解码正确转发的主信道安全性,而忽略了中继信道的安全性.本文研究了中继解码正确和不正确两种情形,...

The physical layer security performance of wireless network based on Cooperation

The physical layer security performance uses the fading and noise of wireless network,to make the main channel secure communication,according to secrecy singal equivocation of main channel larger than the equivocation of wiretap channel.Adopting Decode and Forward may help secure communication in main channel even wiretap channel is better than main channel.Recent research just focuses main channel secure when the relay decodes received data correctly,regardless of the relay channels secure.A dynamic cooperative strategy is designed to forward the received data or Cooperative Jamming signal to achieve the relay channels secure on the premise of secure communication in main channel.In addition,nested code and cooperative jamming secure are discussed.