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We investigate the problem of optimizing the secrecy rate of a link between a single source and a single destination in the presence of multiple relays and multiple eavesdroppers. Multiple relays assist the source by either retransmitting a weighted version of the source signal in a decode-and-forward (DF) fashion, or by performing cooperative jamming (CJ) i.e., transmitting weighted noise in order...
This paper addresses the following question, which is of interest in the design of a multiuser decentralized network. Given a total system bandwidth of W Hz and a fixed data rate constraint of R bps for each transmission, how many frequency slots N of size W/N should the band be partitioned into in order to maximize the number of simultaneous links in the network? Dividing the available spectrum results...
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