Abstract
A multiple antenna Gaussian wiretap channel with a multiantenna cooperative jammer (CJ) is considered and the secure degrees of freedom (s.d.o.f.), with N antennas at the sender, receiver, and eavesdropper, is derived for all possible values of the number of antennas at the cooperative jammer, K. In particular, the upper and lower bounds for the s.d.o.f. are provided for different ranges of K and shown to coincide. Gaussian signaling both for transmission and jamming is shown to be sufficient to achieve the s.d.o.f. of the channel, when the s.d.o.f. is integer valued. By contrast, when the channel has a non-integer s.d.o.f., structured signaling and joint signal space and signal scale alignment are employed to achieve the s.d.o.f.
Recommended Citation
M. Nafea and A. Yener, "Secure Degrees of Freedom for the Mimo Wiretap Channel with a Multiantenna Cooperative Jammer," 2014 IEEE Information Theory Workshop, ITW 2014, pp. 626 - 630, article no. 6970907, Institute of Electrical and Electronics Engineers, Dec 2014.
The definitive version is available at https://doi.org/10.1109/ITW.2014.6970907
Department(s)
Electrical and Computer Engineering
International Standard Book Number (ISBN)
978-147995999-0
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Institute of Electrical and Electronics Engineers, All rights reserved.
Publication Date
01 Dec 2014
