On the relationship between the multi-antenna secrecy communications and cognitive radio communications

• Published in: IEEE transactions on communications Vol. 58; no. 6; pp. 1877 - 1886
• Main Authors: Zhang, Lan, Zhang, Rui, Liang, Ying-Chang, Xin, Yan, Cui, Shuguang
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.06.2010; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Channels; Chromium; Cognitive radio; Communications Society; Computation; convex optimization; Covariance matrix; Equivalence; Gaussian; Information technology; Interference constraints; interference temperature; Maximization; MIMO; multi-antenna systems; Mutual information; National electric code; Optimization; secrecy capacity; Temperature; Upper bound

This paper studies the achievable rates of the multi-antenna or multiple-input multiple-output (MIMO) secrecy channel with multiple single-/multi-antenna eavesdroppers. By assuming Gaussian input, the maximum achievable secrecy rate is obtained with the optimal transmit covariance matrix that maximi...