A Note on the Secrecy Capacity of the Multi-antenna Wiretap Channel
Information Theory
2007-10-23 v1 math.IT
Abstract
Recently, the secrecy capacity of the multi-antenna wiretap channel was characterized by Khisti and Wornell [1] using a Sato-like argument. This note presents an alternative characterization using a channel enhancement argument. This characterization relies on an extremal entropy inequality recently proved in the context of multi-antenna broadcast channels, and is directly built on the physical intuition regarding to the optimal transmission strategy in this communication scenario.
Keywords
Cite
@article{arxiv.0710.4105,
title = {A Note on the Secrecy Capacity of the Multi-antenna Wiretap Channel},
author = {Tie Liu and Shlomo Shamai},
journal= {arXiv preprint arXiv:0710.4105},
year = {2007}
}
Comments
10 pages, 0 figures