An achievable region for the Gaussian wiretap channel with side information

作者：Mitrpant, C^*; Vinck, AJH; Luo, Y

来源：IEEE Transactions on Information Theory, 2006, 52(5): 2181-2190.

DOI：10.1109/TIT.2006.872968

• dirty-paper channel
• Gaussian wiretap channel
• Gaussian wiretap channel with side information
• perfect secrecy

In this correspondence, we extend the Gaussian wiretap channel model introduced by Leung-Yan-Cheong and Hellman to the Gaussian wiretap channel with side information by introducing additive white Gaussian interference in the main channel, which is available to the encoder in advance. This model is also an extension of the dirty-paper channel introduced by Costa since its main channel is the dirty-paper channel. A perfect-secrecy-achieving coding strategy for the model is proposed. It is used to derive achievable rates with asymptotic perfect secrecy and an achievable rate-equivocation region. The achievable rates with asymptotic perfect-secrecy are then compared to upper and lower bounds. The comparison indicates that the proposed coding strategy is optimal in some cases.

• 出版日期2006-5
• 单位上海交通大学