DocumentCode :
639217
Title :
Optimality of beamforming and closed form secrecy capacity of MIMO wiretap channels with two transmit antennas
Author :
Jiangyuan Li ; Petropulu, A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Rutgers-The State Univ. of New Jersey, New Brunswick, NJ, USA
fYear :
2013
fDate :
24-27 June 2013
Firstpage :
1
Lastpage :
5
Abstract :
A Gaussian multiple-input multiple-output (MIMO) wiretap channel model is considered. The input is a two-antenna transmitter, while the outputs are the legitimate receiver and an eavesdropper, both equipped with multiple antennas. All channels are assumed to be known. The problem of obtaining the optimal input covariance matrix that achieves secrecy capacity subject to a sum power constraint is addressed, and a closed-form expression for the secrecy capacity is obtained. The sufficient and necessary condition for beamforming to be optimal is also given.
Keywords :
MIMO communication; antenna arrays; array signal processing; covariance matrices; radio receivers; radio transmitters; Gaussian wiretap channel model; MIMO wiretap channels; beamforming; closed form secrecy capacity; eavesdropper; legitimate receiver; optimal input covariance matrix; two transmit antennas; two-antenna transmitter; Array signal processing; Information theory; MIMO; Receiving antennas; Transmitting antennas; Vectors; MIMO wiretap channel; Secrecy capacity; physical layer security;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Wireless Personal Multimedia Communications (WPMC), 2013 16th International Symposium on
Conference_Location :
Atlantic City, NJ
ISSN :
1347-6890
Type :
conf
Filename :
6618614
Link To Document :
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