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3D E-CRUSE:Energy-based throughput analysis of three dimensional underwater network using RF communication

Journal of Ocean Engineering and Science 2022年第2期7卷 155-162页

作者： Pavan Ganesh PSS hrishikesh venkataraman Next Generation Communication Group Indian Institute of Information Technology Sri City(IIITS)AP517646India

Monitoring the ocean shore continuously in real-time is essential for important applications like port security,coastal surveillance,assistance in navigation *** needs a high data rate for the transmis-sion of data from underwater nodes to the *** communication is the traditional approach for underwater networks and offers long-range ***,the achievable data rate using acoustic communication is in the order of kbps *** frequency(RF)based communication per-forms better than acoustic communication and provides a data rate of up to 100 Mbps in an underwater ***,due to high propagation loss,the communication range using RF is limited to a few *** importantly,the underwater nodes are battery-operated and recharging the bat-tery is ***,it is imperative that underwater RF networks are analyzed using an accurate energy model for its deployment and *** requires that the underwater network is prop-erly *** this work,a cluster-based three-dimensional(3D)architecture for underwater networks using RF communication is ***,the energy-based throughput of the 3D architecture using multi-hop communication,3D E-CRUSE,is obtained using a mathematical *** throughput is then observed for various water environments,various parameters and the results are compared to the existing two-dimensional *** is observed that the throughput of the proposed 3D architecture is up to 3 times more than the 2D architecture.

关键词： Cluster Energy model Multi-hop Throughput Radio frequency Underwater

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Cluster-Based Design for Two-hop Cellular Networks

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International Journal of Communications, Network and System Sciences 2008年第4期1卷 370-385页

作者： hrishikesh venkataraman Sinan SINANOVIC Harald HAAS 不详

Optimal resource allocation with an objective of maximizing the system capacity is an NP-hard problem in multihop cellular networks. Hence, different heuristic algorithms have been developed over the years that would improve the network system capacity. In this paper, a novel cluster-based architecture is proposed for a two-hop cellular network whereby the transmission distance between any communicating pair is restricted to half the cell radius. In this design, a given radio resource is used by two simultaneously communicating pairs in every hexagonal cell, but for only half the time slot period. The characteristic feature of this cluster-based design is that it enables a frequency reuse ratio of one. The proposed hierarchical system is analyzed and tested under realistic propagation conditions including lognormal shadowing. It has been observed that the system capacity of a cluster-based design is 2.5 times that obtained from the single-hop cellular system with no relaying. In addition, the cluster-based design achieves higher capacity compared to state-of-the-art two-hop algorithms. This is an important finding since the hierarchical cluster-based approach has fewer degrees of freedom in the selection of the routing path for the end-to-end connection. Practical routing algorithms should be able to benefit from this.

关键词： Cluster-Based Design Synchronized Resource Reuse Interference Model Spatial Protection Margin

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Optimal Positions of Relay Stations for Cluster-Based Two-Hop Cellular Network

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International Journal of Communications, Network and System Sciences 2009年第4期2卷 283-292页

作者： hrishikesh venkataraman Pradeep Kumar JAIN Segu REVANTH Next Generation Wireless Systems Dhirubhai Ambani Institute of Information and Communication Technology (DAIICT) Gandhinagar India Performance Engineering Laboratory (PEL) School of Electronic Engineering Dublin City University Ireland

Multihop cellular networks is an exciting and a fledgling area of wireless communication which offers huge potential in terms of coverage enhancement, data-rates, power reduction, and various other quality of service improvements. However, resource allocation in MCN is an NP-hard problem. Hence, significant research needs to be done in this field in order to efficiently design the radio network. In this paper, optimal position of relay stations in a hierarchical cluster-based two-hop cellular network is investigated. Vector algebra has been used to derive general equation for carrier-to-interference ratio (C/I) of a mobile station. It has been observed that when the transmit power of base station (BS) and the gateway (GTW)/relay station (RS) are same, the RSs should be located close to mid-point of BS and the edge of the cell. However, significantly, when the transmit power of the BS is greater than that of the GTW, then the RSs should be placed closer to the edge of the cell, in order to maximize the minimum C/I at any point in the cell. This in turn results in higher modulation technique at the physical layer, and hence, a higher data-rate to all the users in the system.

关键词： Cluster-Based Design Power Control Relay Stations Two-Hop Cellular

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