A Note on the Secrecy Capacity of the Multi-antenna Wiretap Channel
نویسندگان
چکیده
The secrecy capacity of the multi-antenna wiretap channel was recently characterized independently by Khisti and Wornell [1] and Oggier and Hassibi [2] using a Sato-like argument and matrix analysis tools. This note presents an alternative characterization of the secrecy capacity of the multi-antenna wiretap channel using a channel enhancement argument. This characterization is by nature information rather than matrix theoretic, and is directly built on the physical intuition regarding to the optimal transmission strategy in this communication scenario. A secure V-BLAST transmission and receiver architecture is proposed to achieve the secrecy capacity of the multi-antenna wiretap channel.
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