Title :
Maximization of worst-case secrecy rates in MIMO wiretap channels
Author :
Wolf, Anne ; Jorswieck, Eduard A.
Author_Institution :
Dept. of Electr. Eng. & Inf. Technol., Dresden Univ. of Technol., Dresden, Germany
Abstract :
We study a multi-antenna wiretap channel, where the transmitter does not have perfect knowledge about the channels to the eavesdropper. The transmitter only knows that the logical location of the eavesdropper is drawn from a certain set. We characterize the worst-case secrecy rate in this scenario for given transmit strategies and derive an upper and a lower bound for the worst-case secrecy rate that is maximized under a sum power constraint at the transmitter. Finally, we discuss strategies for the high and low SNR regime and illustrate our results.
Keywords :
MIMO communication; antenna arrays; optimisation; telecommunication channels; telecommunication security; MIMO wiretap channels; low SNR regime; lower bound; multiantenna wiretap channel; sum power constraint; transmitter; upper bound; worst-case secrecy rate maximization; Covariance matrix; Eigenvalues and eigenfunctions; Helium; Optimization; Resource management; Signal to noise ratio; Transmitters; multi-antenna wiretap channel; secrecy rate maximization; worst-case secrecy rate;
Conference_Titel :
Signals, Systems and Computers (ASILOMAR), 2010 Conference Record of the Forty Fourth Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
978-1-4244-9722-5
DOI :
10.1109/ACSSC.2010.5757519
