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Due to the broadcast nature of wireless channels, the two-way system can be eavesdropped on when a confidential message is transmitted, which is one of the motivations of this paper. While most of existing work focuses on the discussion of secrecy rate with information theoretical approach, this paper discusses the probability of successful detection for the system experiencing exponential path loss...
Despite much research on the throughput of relaying networks under idealized interference models, many practical wireless networks rely on physical-layer protocols that preclude the concurrent reception of multiple transmissions. In this work, we develop analytical frameworks for the uplink of a multi- source single-channel relay-aided wireless system where transmissions are scheduled to avoid collisions...
We consider the estimation of a Gaussian source by a Gaussian sensor network where L distributed sensors transmit noisy observations of the source through a Gaussian multiple access channel to a fusion center. In a recent work, Gastpar showed that for a symmetric sensor network with no fading, analog (uncoded) transmission achieves the optimal performance theoretically attainable (OPTA). In this work,...
In this paper, we consider a 2-hop wireless relay network where more than one relay is available. We explore optimal relay selection for decode-and-forward cooperative protocol to minimize the outage probability under a short-term power constraint. We first investigate the impact of power control on relay selection from a capacity point-of-view. Assuming the knowledge of channel gain magnitudes, we...
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