DocumentCode :
2168185
Title :
Filter design with secrecy constraints: The multiple-input multiple-output Gaussian wiretap channel with zero forcing receive filters
Author :
Reboredo, Hugo ; Prabhu, Vinay ; Rodrigues, Miguel R D ; Xavier, João
Author_Institution :
Instituto de Telecomunicações, Dept. of Computer Science, University of Porto, Portugal
fYear :
2011
fDate :
22-27 May 2011
Firstpage :
3440
Lastpage :
3443
Abstract :
This paper considers the problem of filter design with secrecy constraints, where two legitimate parties (Alice and Bob) communicate in the presence of an eavesdropper (Eve), over a Gaussian multiple-input multiple-output (MIMO) wiretap channel. This problem involves the design of transmit and receive filters which minimize the mean-square error (MSE) between the legitimate parties, whilst assuring that the eavesdropper MSE remains above a certain level. We characterize the form of the optimal transmit filter when both the legitimate receiver and the eavesdropper employ Zero-Forcing (ZF) filters. By capitalizing on the dual problem, we also show that the original matrix optimization problem can be reduced to a simple scalar optimization problem, whose solution can be readily computed by employing a simple bisection method. Numerical results illustrate the main conclusions.
Keywords :
Covariance matrix; Filtering theory; MIMO; Optimization; Receivers; Security; Wiener filter; Filter Design; Multiple-Input Multiple-Output; Secrecy; Wiretap channel; ZF filters;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Acoustics, Speech and Signal Processing (ICASSP), 2011 IEEE International Conference on
Conference_Location :
Prague, Czech Republic
ISSN :
1520-6149
Print_ISBN :
978-1-4577-0538-0
Electronic_ISBN :
1520-6149
Type :
conf
DOI :
10.1109/ICASSP.2011.5947125
Filename :
5947125
Link To Document :
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