Title :
A channel-enhancement approach to the secrecy capacity of the multiantenna wiretap channel
Author :
Liu, Tie ; Shamai, Shlomo
Author_Institution :
Dept. of Electr. & Comput. Eng., Texas A&M Univ., College Station, TX, USA
Abstract :
The secrecy capacity of the multiantenna wiretap channel was recently characterized independently by Khisti and Wornell and Oggier and Hassibi using a Sato-like argument and matrix analysis tools. This paper presents an alternative characterization of the secrecy capacity of the multiantenna wiretap channel using a channel-enhancement argument. Compared with the approach of Khisti-Wornell and Oggier-Hassibi, this characterization is by nature information- rather than matrix-theoretic. Moreover, it extends the previous results from the average total power constraint to the more general matrix power constraint.
Keywords :
channel capacity; matrix algebra; multifrequency antennas; receiving antennas; transmitting antennas; wire antennas; average total power constraint; channel capacity; channel-enhancement approach; matrix analysis tool; matrix power constraint; multiantenna wiretap channel; receive antenna; transmit antenna; Additive noise; Capacity planning; Cities and towns; Covariance matrix; Decoding; Degradation; Gaussian noise; Helium; Receiving antennas; Transmitting antennas;
Conference_Titel :
Networking and Information Theory, 2009. ITW 2009. IEEE Information Theory Workshop on
Conference_Location :
Volos
Print_ISBN :
978-1-4244-4535-6
Electronic_ISBN :
978-1-4244-4536-3
DOI :
10.1109/ITWNIT.2009.5158574
