通信学报
通信學報
통신학보
JOURNAL OF CHINA INSTITUTE OF COMMUNICATIONS
2013年
7期
42-48,58
,共8页
物理层安全%线性随机化%信息理论安全%随机子载波参考
物理層安全%線性隨機化%信息理論安全%隨機子載波參攷
물리층안전%선성수궤화%신식이론안전%수궤자재파삼고
physical layer security%linear randomization%information theory security%random sub-carrier referencing
为设计实用物理层安全传输机制，给出了线性随机化预处理模型。该模型指出，基于无线信道的特征差异，恰当地设计加性和乘性随机化模块可以为合法用户提供信道优势。从信息理论安全角度论证了加性随机化权值和乘性随机化权值具有最小信息泄漏时应满足的最佳分布。最后提出一种随机子载波参考安全传输机制对乘性随机化权值的优化设计进行了实例化分析。
為設計實用物理層安全傳輸機製，給齣瞭線性隨機化預處理模型。該模型指齣，基于無線信道的特徵差異，恰噹地設計加性和乘性隨機化模塊可以為閤法用戶提供信道優勢。從信息理論安全角度論證瞭加性隨機化權值和乘性隨機化權值具有最小信息洩漏時應滿足的最佳分佈。最後提齣一種隨機子載波參攷安全傳輸機製對乘性隨機化權值的優化設計進行瞭實例化分析。
위설계실용물리층안전전수궤제，급출료선성수궤화예처리모형。해모형지출，기우무선신도적특정차이，흡당지설계가성화승성수궤화모괴가이위합법용호제공신도우세。종신식이론안전각도론증료가성수궤화권치화승성수궤화권치구유최소신식설루시응만족적최가분포。최후제출일충수궤자재파삼고안전전수궤제대승성수궤화권치적우화설계진행료실례화분석。
Linear randomization pre-processing framework was presented to design feasible physical layer secure trans-mission schemes. The framework show that, based on characteristic differentiae of wireless channels, additive and multi-plicative randomization modules with suitable design would create channel advantage for legitimate users. In the view point of information theory security, the optimal distributions of the additive randomization weights and the multiplica-tive randomization weights to induce the lowest information leakage to the eavesdropper were verified. Finally, A random sub-carrier referencing security scheme was proposed as an instantiation analysis for the optimization design of multipli-cative randomization weights.
