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- W2081657888 abstract "We investigate large wireless networks subject to security constraints. In contrast to point-to-point, interference-limited communications considered in prior works, we propose active cooperative relaying based schemes. We consider a network with legitimate nodes, eavesdroppers, and path loss exponent . As long as , for some positive , we show one can obtain unbounded secure aggregate rate. This means zero-cost secure communication, given fixed total power constraint for the entire network. We achieve this result through (i) the source using Wyner randomized encoder and a serial (multi-stage) block Markov scheme, to cooperate with the relays and (ii) the relays acting as a virtual multi-antenna to apply beamforming against the eavesdroppers. Our simpler parallel (two-stage) relaying scheme can achieve the same unbounded secure aggregate rate when holds, for some positive ." @default.
- W2081657888 created "2016-06-24" @default.
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- W2081657888 date "2014-04-01" @default.
- W2081657888 modified "2023-09-30" @default.
- W2081657888 title "Scaling laws for secrecy capacity in cooperative wireless networks" @default.
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- W2081657888 doi "https://doi.org/10.1109/infocom.2014.6848088" @default.
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