Hui-Ming Wang and X.-G. Xia, “Enhancing wireless secrecy via cooperation: signal design and optimization,” IEEE Communications Magazine, to appear, 2015.

Physical layer security, or information-theoretic security, has attracted considerable attention recently,
due to its potential to enhance the transmission secrecy of wireless communications. Various secrecy
signaling and coding schemes have been designed at the physical layer of wireless systems to guarantee
the confidentiality against information leakage to unauthorized receivers, among which the strategy based
on the idea of node cooperation is promising. This article provides an overview of the recent researches
on enhancing wireless transmission secrecy via cooperation. We take a signal processing perspective and
focus on the secrecy signal design and optimization techniques to increase the secrecy performance. We
also propose some future research directions on this topic.

IEEE Communications Magazine 影响因子4.46，是IEEE Communications Society旗下所有期刊和杂志中影响因子第三高的刊物，