Chaos embedded polar coding for wiretap channel in negative secrecy capacity case
Yizhi Zhao, Xuecheng Zou, Zhenglin Liu · 2016
The negative secrecy capacity case is an important problem for secure wiretap channel polar coding, however former polar coding schemes have not considered this negative case because physical layer channel coding cannot achieve a positive secrecy rate under this condition. In this paper, a chaos embedded polar coding scheme is proposed which can achieve a positive secrecy rate for wiretap channel under the negative case. The proposed scheme is composed of chaos operation, frozen bits operation, polar coding and a multi-block chaining structure for key transmission, with proofed reliability and security.