MILCOM 2009 - 2009 IEEE Military Communications Conference最新文献_第8页

Terminal transmit adaptation for optimal link availability 终端传输自适应以获得最佳链路可用性

MILCOM 2009 - 2009 IEEE Military Communications Conference Pub Date : 2009-10-18 DOI: 10.1109/MILCOM.2009.5379865

Ludong Wang, B. Jezek

{"title":"Terminal transmit adaptation for optimal link availability","authors":"Ludong Wang, B. Jezek","doi":"10.1109/MILCOM.2009.5379865","DOIUrl":"https://doi.org/10.1109/MILCOM.2009.5379865","url":null,"abstract":"The techniques of Terminal transmit adaptation are critical for achieving maximal channel throughput when the link loss exhibits large variation. In this paper, some technical issues regarding transmit power control and mode adaptation in satellite communication (SATCOM) systems are addressed. The transmit adaptation is explored in terms of optimizing the link availability. The analysis extends the common assumption of white Gaussian noise channel to include the case of color noise interference, which is practical in applications as bandwidth resource becomes less sufficient to the demands. Based on this extended assumption, the need of differentiated power adaptation criteria is demonstrated. A closed-loop power control and mode adaptation scheme is subsequently derived to meet that operational need. In addition, a generic case of power-controlled carriers operating among non-power-controlled carriers is analyzed and an approach for mitigating the interference impact is given. The presented analysis and designs are intended for user terminals to accommodate potentially large link variation that exists in both commercial and military Ka-band. They are even more critical for military EHF satellite SATCOM systems.","PeriodicalId":338641,"journal":{"name":"MILCOM 2009 - 2009 IEEE Military Communications Conference","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132935725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Overview of the security architecture of the Comprehensive Maritime Awareness system 海上综合感知系统安全体系结构概述

MILCOM 2009 - 2009 IEEE Military Communications Conference Pub Date : 2009-10-18 DOI: 10.1109/MILCOM.2009.5379809

Myong H. Kang, Margery Li, B. Montrose, Amitabh Khashnobish, S. Elliott, M. Bell, Steven D. Pieper

引用次数: 6

Delay tolerant Mobility Aware Routing/Mobility Dissemination Protocol for the airborne network 面向机载网络的容延迟移动感知路由/移动传播协议

MILCOM 2009 - 2009 IEEE Military Communications Conference Pub Date : 2009-10-18 DOI: 10.1109/MILCOM.2009.5379888

Kevin C. Lee, Adam Piechowicz, M. Gerla, A. Tiwari, A. Ganguli, D. Krzysiak

{"title":"Delay tolerant Mobility Aware Routing/Mobility Dissemination Protocol for the airborne network","authors":"Kevin C. Lee, Adam Piechowicz, M. Gerla, A. Tiwari, A. Ganguli, D. Krzysiak","doi":"10.1109/MILCOM.2009.5379888","DOIUrl":"https://doi.org/10.1109/MILCOM.2009.5379888","url":null,"abstract":"Despite “airborne network (AN) topology design” and careful planning of AN trajectories, unexpected disruptions (from hardware failures to changes in mission requirements and hostile attacks) may cause nodes not to connect to one another directly or indirectly either because they are out of one another's range or because nodes do not meet one another according to their preplanned trajectories. Since an end-to-end path within the AN is not always guaranteed, packets have to be delivered in a delay-tolerant fashion, namely, some intermediate nodes will need to buffer packets during times of disconnectivity. In our earlier work we developed Mobility Aware Routing Protocol and Mobility Dissemination Protocol (MARP/MDP) that used preplanned trajectories of airborne nodes to make intelligent routing decisions preemptively. In this paper we present a delay-tolerant strategy (MARP/MDP+DTN) to predict the minimum end-to-end delay and obtain the corresponding path. In addition, MARP/MDP+DTN accounts for local queueing (MARP/MDP+DTN+QC) to minimize congestion and further improves end-to-end delay with the positive side effect of load-balancing. Simulation results have shown an improvement of 52% in packet delivery ratio in MARP/MDP+DTN. MARP/MDP+DTN+QC also exhibits extremely short latency, about 90% reduction from MARP/MDP+DTN in highly congested network. Moreover, MARP+DTN+QC balances local traffic 67% better than MARP+DTN in high traffic load scenarios.","PeriodicalId":338641,"journal":{"name":"MILCOM 2009 - 2009 IEEE Military Communications Conference","volume":"67 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131776412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Identity propagation in N-tier systems n层系统中的身份传播

MILCOM 2009 - 2009 IEEE Military Communications Conference Pub Date : 2009-10-18 DOI: 10.1109/MILCOM.2009.5379926

Anil C Patel, M. McRoberts, Melissa Crenshaw

引用次数: 3

Template design and propagation gain for multipath UWB channels with per-path frequency-dependent distortion 具有单径频率相关失真的多径UWB信道的模板设计和传播增益

MILCOM 2009 - 2009 IEEE Military Communications Conference Pub Date : 2009-10-18 DOI: 10.1109/MILCOM.2009.5380076

Neil Mehta, A. Duel-Hallen, H. Hallen

{"title":"Template design and propagation gain for multipath UWB channels with per-path frequency-dependent distortion","authors":"Neil Mehta, A. Duel-Hallen, H. Hallen","doi":"10.1109/MILCOM.2009.5380076","DOIUrl":"https://doi.org/10.1109/MILCOM.2009.5380076","url":null,"abstract":"Due to the large bandwidth allocation, Ultra-Wideband (UWB) channels exhibit frequency-dependent distortion of individual multipath components. This per-path distortion is particularly significant in outdoor UWB applications, where line-of-sight (LOS) or non-distorted reflected signals might not be available at the receiver, and the dominant propagation mechanisms involve shadowing (diffraction) or reflection by small objects (e.g. signs or lamp-posts). In this paper, a physical model is employed in the design of robust correlation receiver templates for outdoor single and multipath impulse radio channels characterized by per-path distortion. It is demonstrated that receivers which employ a set of partial derivatives templates are near-optimal in terms of energy capture while the simple transmit pulse template provides excellent complexity-performance trade-offs for most practical scenarios. Moreover, iterative receiver structures that maintain the energy capture in the presence of overlapping multipath components are investigated. Finally, a large gap between the propagation gains of the transmit pulses in the lower and upper bands of the FCC spectrum is characterized for several propagation mechanisms.*","PeriodicalId":338641,"journal":{"name":"MILCOM 2009 - 2009 IEEE Military Communications Conference","volume":"15 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133042555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Constructing underwater sensor based barriers using distributed auctions 基于分布式拍卖的水下传感器屏障构建

MILCOM 2009 - 2009 IEEE Military Communications Conference Pub Date : 2009-10-18 DOI: 10.1109/MILCOM.2009.5379969

S. Barr, Benyuan Liu, Jie Wang

引用次数: 8

WiMAX at traffic-demanding electronic warfare air exercise ELITE 2008 WiMAX在交通要求苛刻的电子战空中演习精英2008

MILCOM 2009 - 2009 IEEE Military Communications Conference Pub Date : 2009-10-18 DOI: 10.1109/MILCOM.2009.5379891

Luis Bastos, H. Wietgrefe

{"title":"WiMAX at traffic-demanding electronic warfare air exercise ELITE 2008","authors":"Luis Bastos, H. Wietgrefe","doi":"10.1109/MILCOM.2009.5379891","DOIUrl":"https://doi.org/10.1109/MILCOM.2009.5379891","url":null,"abstract":"The Hybrid Extension Module (HEM) Prototype implements a NATO C3 Agency (NC3A) concept for future Deployable Headquarter communications infrastructure in support of NATO Response Force (NRF) and Expeditionary Operations. It makes use of a hybrid transmission system composed of IP-converged wireless (WiMAX) and wired (fiber optics) solutions. In 2008, NC3A improved many aspects of the HEM Prototype and deployed it to the international electronic warfare air exercise ELITE 2008. This exercise posed a particularly demanding scenario involving significant asymmetric real-time traffic, long-range obstructed radio links, and a polluted radio frequency environment, for which the HEM Prototype was not initially tailored. The focus of the experiment was on WiMAX performance from different angles: radio performance, interference susceptibility, broadband capacity, and configuration and deployment flexibility. This paper introduces the scenario and challenges posed by ELITE 2008. It addresses the improvements performed to the HEM Prototype to match the operational requirements. It then describes the actual deployment to the ELITE exercise area and focuses on the most relevant tests performed to the WiMAX system. Results obtained put in evidence the validity of WiMAX as a wireless transmission technology for deployable headquarter communications, due to its flexibility in adapting to demanding military scenarios, its resistance to interference, and its remarkable radio performance under sub-optimal conditions.","PeriodicalId":338641,"journal":{"name":"MILCOM 2009 - 2009 IEEE Military Communications Conference","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115360637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Automated planning for remote penetration testing 远程渗透测试的自动化计划

MILCOM 2009 - 2009 IEEE Military Communications Conference Pub Date : 2009-10-18 DOI: 10.1109/MILCOM.2009.5379852

Lloyd G. Greenwald, R. Shanley

引用次数: 10

Virtual Ad hoc Network testbeds for high fidelity testing of tactical network applications 用于战术网络应用高保真度测试的虚拟自组网测试平台

MILCOM 2009 - 2009 IEEE Military Communications Conference Pub Date : 2009-10-18 DOI: 10.1109/MILCOM.2009.5379721

A. Poylisher, C. Serban, John Lee, Te Lu, R. Chadha, C. Chiang, K. Jakubowski, R. Orlando

{"title":"Virtual Ad hoc Network testbeds for high fidelity testing of tactical network applications","authors":"A. Poylisher, C. Serban, John Lee, Te Lu, R. Chadha, C. Chiang, K. Jakubowski, R. Orlando","doi":"10.1109/MILCOM.2009.5379721","DOIUrl":"https://doi.org/10.1109/MILCOM.2009.5379721","url":null,"abstract":"Testing of applications for tactical MANETs poses a special technical challenge due to the difficulty of conducting experiments in an ad hoc network environment at a scale larger than a few nodes. One approach is to conduct experiments in a testbed that can imitate a tactical MANET to the highest feasible level of fidelity. For applications, this is achieved by executing unmodified software under real operating systems and realistic hardware resources. For the network, it is achieved by using an emulated/simulated network that behaves like a real MANET in some/all layers of the protocol stack. In this paper, we describe the current state of Virtual Ad hoc Network (VAN) Testbed1 technologies for constructing testbeds that allow testing unmodified tactical applications over simulated MANETs, including network-aware applications. On the application side, we employ Xen-based virtualization to provide high fildelity of application execution environment, testbed resource scalability and manageability. On the network side, we employ user-provided simulation models and enable seamless integration of the hosts that run the software under test with virtual nodes in a simulated network. Our goal is to enable running experiments over large-scale (500–1000 nodes) MANETs using VAN testbeds.","PeriodicalId":338641,"journal":{"name":"MILCOM 2009 - 2009 IEEE Military Communications Conference","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114861247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Using flow control to improve performance of Demand-Assignment Multiple Access systems with performance enhancing proxies 利用流量控制提高按需分配多址系统的性能

MILCOM 2009 - 2009 IEEE Military Communications Conference Pub Date : 2009-10-18 DOI: 10.1109/MILCOM.2009.5379828

P. Feighery, K. Scott, D. Goldsmith

{"title":"Using flow control to improve performance of Demand-Assignment Multiple Access systems with performance enhancing proxies","authors":"P. Feighery, K. Scott, D. Goldsmith","doi":"10.1109/MILCOM.2009.5379828","DOIUrl":"https://doi.org/10.1109/MILCOM.2009.5379828","url":null,"abstract":"It is widely known that TCP's congestion control algorithm can cause it to under-perform when round trip times and error rates are high. Performance Enhancing Proxies (PEPs) can improve performance by breaking end-to-end TCP connections and using a separate, tuned transport protocol to transit ‘stressed’ links. While PEPs can be tuned to work well when a single pair of PEPs bracket a fixed-rate link, these systems can be difficult to tune when the stressed link has variable bandwidth as in a Demand Assigned Multiple Access (DAMA) scheme, when multiple encrypted enclaves must share the outgoing bandwidth, or when the round trip times vary widely. Previous efforts have shown the effect of using a modified version of the TCP Vegas congestion control algorithm in Time Division Multiple Access (TDMA) DAMA systems where bandwidth is allocated based on current queue length and where multiple enclaves must share the outgoing bandwidth. This paper examines the performance of a DAMA based system when the TCP PEP uses flow control between the PEP and the DAMA access terminal. This improves performance by removing an adverse interaction between PEP congestion control and DAMA channel access protocols. We show the effects of employing proxies when the modem provides direct feedback about the amount of data it is willing to consume.","PeriodicalId":338641,"journal":{"name":"MILCOM 2009 - 2009 IEEE Military Communications Conference","volume":"184 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116279920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0