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Achievable Secrecy Sum-Rate in a Fading MAC-WT with Power Control and without CSI of Eavesdropper
Channel state information Cooperative jamming Fading Channel Multiple Access Channel Secrecy sumrate
2011/9/21
Abstract: We consider a two user fading Multiple Access Channel with a wire-tapper (MAC-WT) where the transmitter has the channel state information (CSI) to the intended receiver but not to the eavesd...
Secure Wireless Communication and Optimal Power Control under Statistical Queueing Constraints
Secure Wireless Communication Optimal Power Control Statistical Queueing Constraints
2011/1/14
In this paper, secure transmission of information over fading broadcast channels is studied in the presence of statistical queueing constraints. Effective capacity is employed as a performancemetric t...
On Repetition Protocols and Power Control for Multiple Access Block-Fading Channels
Repetition Protocols Power Control Multiple Access Block-Fading Channels
2010/12/10
In this paper we study the long-term throughput performance of repetition protocols coupled with power control for multiple access block-fading channels.
Valuable mineral resources are widely distributed throughout the seabed. autonomous underwater vehicles (AUVs) are preferable to remotely-operated vehicles (ROVs) when probing for such mineral resources as the extensive exploration area makes it difficult to maintain contact with operators. AUVs depend on batteries, so their power consumption should be reduced to extend exploration time. Power for conventional marine instrument systems is incorporated in their waterproof sealing. External intermittent control of this power source until termination of exploration is challenging due to limitations imposed by the underwater environment. Thus, the AUV must have a power control system that can improve performance and maximize use of battery capacity. The authors developed such a power control system with a three-step algorithm. It automatically detects underwater operational states and can limit power, effectively decreasing power consumption by about 15%.
surface piercing propeller boundary element method hydrodynamic characteristics
2011/9/13
Demand for high-speed marine vehicles (HSMVs) is high among both commercial and naval users. It is the duty of the marine vessel’s designer to provide a hull and propulsion system that diminishes drag...
Development of a power control system for AUVs probing for underwater mineral resourcess
power control underwater prober submarine mineral resources power efficiency energy saving
2011/9/13
Valuable mineral resources are widely distributed throughout the seabed. autonomous underwater vehicles (AUVs) are preferable to remotely-operated vehicles (ROVs) when probing for such mineral resourc...