Title :
Secrecy capacity of the 2-2-1 gaussian MIMO wire-tap channel
Author :
Shafiee, Shabnam ; Liu, Nan ; Ulukus, Sennur
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Maryland, College Park, MD
Abstract :
We find the secrecy capacity of the 2-2-1 Gaussian MIMO wire-tap channel, which consists of a transmitter and a receiver with two antennas each, and an eavesdropper with a single antenna. We determine the secrecy capacity of this channel by proposing an achievable scheme and then developing a tight upper bound that meets the proposed achievable secrecy rate. We show that, for this channel, Gaussian signalling in the form of beam-forming is optimal, and no pre-processing of information is necessary.
Keywords :
Gaussian channels; MIMO communication; antennas; array signal processing; channel capacity; telecommunication security; telecommunication signalling; Gaussian MIMO wire-tap channel; Gaussian signalling; beam-forming; secrecy channel capacity; single antenna eavesdropper; Channel capacity; Degradation; Educational institutions; MIMO; Random variables; Receiving antennas; Transmitters; Transmitting antennas; Upper bound; Wireless communication;
Conference_Titel :
Communications, Control and Signal Processing, 2008. ISCCSP 2008. 3rd International Symposium on
Conference_Location :
St Julians
Print_ISBN :
978-1-4244-1687-5
Electronic_ISBN :
978-1-4244-1688-2
DOI :
10.1109/ISCCSP.2008.4537221
