Computer Science – Information Theory
Scientific paper
2010-11-09
Computer Science
Information Theory
8 pages, Presented at the Forty-Eighth Annual Allerton Conference on Communication, Control, and Computing, September 29 - Oct
Scientific paper
We study a four terminal parallel relay-eavesdropper channel which consists of multiple independent relay-eavesdropper channels as subchannels. For the discrete memoryless case, we establish inner and outer bounds on the rate-equivocation region. For each subchannel, secure transmission is obtained through one of the two coding schemes at the relay: decoding-and-forwarding the source message or confusing the eavesdropper through noise injection. The inner bound allows relay mode selection. For the Gaussian model we establish lower and upper bounds on the perfect secrecy rate. We show that the bounds meet in some special cases, including when the relay does not hear the source. We illustrate the analytical results through some numerical examples.
Awan Zohaib Hassan
Vandendorpe Luc
Zaidi Abdellatif
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