电子科技大学学报Issue(6)：801-807,7.DOI:10.3969/j.issn.1001-0548.2015.06.001
能量收集协同干扰中继系统保密速率优化
Secrecy Rate Optimization for Cooperative Jamming Relay System with Energy Harvesting Constraints
摘要
Abstract
Cooperative jamming is an efficient scheme to improve the secrecy rate achievable in the Gaussian wiretap channel. The optimization of secrecy rate in the wireless relay-eavesdropper channel model is studied. In the model, each node can harvest energy. Besides, the save-then-transmit protocol is adopted by the source node and relay node, harvesting energy first and then transmitting the data. The relay only plays the role of cooperative jamming when the source transmits the data. The condition that ensures the promotion of secrecy capacity is derived and then an iterative algorithm maximizing the secrecy rateRs is given, which is based on the optimization of the save-ratioρand the relay power allocationPr. Simulation results show that the proposed algorithm has a high convergence rate and proves to be effective in improving secrecy rate.关键词
协同干扰/聋中继/能量收集/中继窃听信道/储能-发送/保密速率Key words
cooperative jamming/deaf delay/energy harvesting/relay-eavesdropper channel/save- then-transmit/secrecy rate分类
信息技术与安全科学引用本文复制引用
雷维嘉,江雪,左莉杰,谢显中..能量收集协同干扰中继系统保密速率优化[J].电子科技大学学报,2015,(6):801-807,7.基金项目
国家自然科学基金(61471076，61271259，61301123)；长江学者和创新团队发展计划(IRT1299)；重庆市科委重点实验室专项经费 （61471076，61271259，61301123）
