2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277)最新文献_第6页

Increasing the availability of medium data rates at high latitude HF channels 增加高纬度高频信道中数据速率的可用性

2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277) Pub Date : 2001-10-28 DOI: 10.1109/MILCOM.2001.985834

R. Otnes, V. Jodalen

引用次数: 2

Client application considerations for low bandwidth communications using STANAG 5066 使用STANAG 5066进行低带宽通信的客户端应用程序注意事项

2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277) Pub Date : 2001-10-28 DOI: 10.1109/MILCOM.2001.985841

A.F.R. Gillespie, S. Trinder, D. Brown

引用次数: 2

Improving efficiency in frequency assignment engines 提高频率分配引擎的效率

2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277) Pub Date : 2001-10-28 DOI: 10.1109/MILCOM.2001.985758

G. Wyman, G.R. Bradbeer, S. Hurley, R. Taplin, D.H. Smith

{"title":"Improving efficiency in frequency assignment engines","authors":"G. Wyman, G.R. Bradbeer, S. Hurley, R. Taplin, D.H. Smith","doi":"10.1109/MILCOM.2001.985758","DOIUrl":"https://doi.org/10.1109/MILCOM.2001.985758","url":null,"abstract":"The electromagnetic spectrum is a limited resource which is rapidly becoming saturated, and with the trend to charge users, efficient use is critical. Military users must react to different allotments and adapt to the prevailing conditions. The objective of using available bandwidth efficiently, while, at the same time, minimising interference, gives rise to a number of variations of a problem usually referred to as the frequency assignment problem (FAP). Many algorithms have been developed in order to produce optimal or near optimal assignments of frequencies to defined sets of transmitters, but it is recognised that rigorous solutions are only possible for a very small population. Early assignment algorithms were limited in their application, constrained by the available processing speed and thus only considered a reduced set of constraints. The authors have developed a system for combat net radio that takes into account these extensions to the standard FAP It was concluded that the most effective algorithms start from a sequential solution and use a meta-heuristic algorithm such as tabu search or simulated annealing to find solutions for large network deployments.","PeriodicalId":136537,"journal":{"name":"2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115226323","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

Scenario based comparison of cellular and ad-hoc tactical radio networks 基于场景的蜂窝和自组织战术无线网络的比较

2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277) Pub Date : 2001-10-28 DOI: 10.1109/MILCOM.2001.985852

A. Hansson, J. Nilsson, M. Skold, U. Sterner

{"title":"Scenario based comparison of cellular and ad-hoc tactical radio networks","authors":"A. Hansson, J. Nilsson, M. Skold, U. Sterner","doi":"10.1109/MILCOM.2001.985852","DOIUrl":"https://doi.org/10.1109/MILCOM.2001.985852","url":null,"abstract":"Two types of tactical radio networks are analyzed and compared. Firstly we consider a multi-hop ad-hoc network and secondly a WCDMA cellular network based on the new UMTS terrestrial radio access network called UTRAN. We are interested in how an ad-hoc network behaves and compares to a cellular network with a limited number of base stations, in a mobile scenario. For the assessment, two tactical scenarios involving a Swedish mechanized battalion are drawn up for armed combat on Swedish ground. They are characterized by different mobility, where in the first we have constant movements over a large area and in the second only a high speed movement within a limited area at the end of the scenario. We test a service mix consisting of situation awareness data, group calls and intranet connections. We use a digitized terrain database for propagation modeling in the 300 MHz and the 1.5 GHz frequency bands. As a scenario elapses, at each time instant, the probability that the network can provide a service for an arbitrarily chosen radio terminal is estimated. Based on these results we finally assess the different network solutions.","PeriodicalId":136537,"journal":{"name":"2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114648389","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

Blind cyclostationary statistics based carrier frequency offset and symbol timing delay estimators in flat-fading channels 基于盲循环平稳统计的载波频偏和符号时延估计

2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277) Pub Date : 2001-10-28 DOI: 10.1109/MILCOM.2001.986083

Yang Wang, E. Serpedin, P. Ciblat, P. Loubaton

引用次数: 6

Combat radio system range reduction due to radiated electromagnetic interference from COTS electronics 由于COTS电子设备的辐射电磁干扰，战斗无线电系统范围减小

2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277) Pub Date : 2001-10-28 DOI: 10.1109/MILCOM.2001.985755

P. Stenumgaard, S. Linder

{"title":"Combat radio system range reduction due to radiated electromagnetic interference from COTS electronics","authors":"P. Stenumgaard, S. Linder","doi":"10.1109/MILCOM.2001.985755","DOIUrl":"https://doi.org/10.1109/MILCOM.2001.985755","url":null,"abstract":"Co-location between digital radio systems and civilian electronic equipment can lead to severe interference problems. Unintentional radiated electromagnetic emission can increase the bit error probability (BEP) in the digital radio receiver, and thus reduce the range of secure operation. Furthermore the intersystem interference causes a reduction of the jamming resistance. In this paper, the corresponding decrease of the operating range to compensate for this increase in BEP is determined Furthermore, the increase of the operating range for a hostile jammer is determined for a chosen example. The results are visualized as simulated coverage diagrams for chosen terrain environments. The analyses show that the operating range is decreased with approximately 25% for a co-location distance of 20 meters between the radio receiver and disturbing COTS (commercial of the shelf) equipment, if typical measured emission levels are used. In this scenario a hostile jammer gets nearly 50% larger operating range compared to a scenario without the COTS-computers. If a part of the emission equals the EN 55022 Class B emission limit, required for commercial equipment sold in the European Union, a range reduction of 50% is obtained. Thus, the overall conclusion is that interference from COTS can cause severe reductions of operating range for digital communication links. This interference can also have significant impact on the jamming resistance. These are important drawbacks that must be considered before co-locating COTS equipment close to tactical communication systems.","PeriodicalId":136537,"journal":{"name":"2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116234627","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

A new backward recursion for the multi-stage nested Wiener filter employing Krylov subspace methods 基于Krylov子空间方法的一种新的多阶段嵌套维纳滤波器的反向递归

2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277) Pub Date : 2001-10-28 DOI: 10.1109/MILCOM.2001.986041

M. Joham, Y. Sun, M. Zoltowski, M. Honig, J. S. Goldstein

引用次数: 18

Modeling and performance of a multilink packet access for wireless cellular systems 无线蜂窝系统多链路分组接入的建模和性能

2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277) Pub Date : 2001-10-28 DOI: 10.1109/MILCOM.2001.985766

B. Jabbari, E. Dinan

引用次数: 4

Rain attenuation model assessment for wideband gapfiller satellite communications link 宽带隙隙卫星通信链路雨衰减模型评估

2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277) Pub Date : 2001-10-28 DOI: 10.1109/MILCOM.2001.985922

A. Mathur, T.M. Nguyen, G. Goo

引用次数: 2

An improved forwarding protocol for updating channel state information in mobile FH wireless networks 移动跳频无线网络中信道状态信息更新的改进转发协议

2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277) Pub Date : 2001-10-28 DOI: 10.1109/MILCOM.2001.985983

M. Pursley, H. Russell, J. Wysocarski

{"title":"An improved forwarding protocol for updating channel state information in mobile FH wireless networks","authors":"M. Pursley, H. Russell, J. Wysocarski","doi":"10.1109/MILCOM.2001.985983","DOIUrl":"https://doi.org/10.1109/MILCOM.2001.985983","url":null,"abstract":"The purpose of adaptive forwarding is to provide short-term responses to changes in propagation conditions and network topology in mobile store-and-forward wireless communication networks. The primary need for such short-term responses occurs during the time period between consecutive updates to the routing tables. In this paper a new adaptive-forwarding protocol is described and evaluated for frequency-hop (FH) mobile wireless networks. The forwarding protocol operates in conjunction with adaptive routing and adaptive transmission to provide energy-efficient delivery of packets. Channel state information, which is developed in the receivers of the terminals in the network, is used to estimate the energy requirements of alternative routes for use in the routing protocol. For FH networks the channel state information consists primarily of counts of errors and erasures that are generated in the demodulators and decoders. Since channel state information may become outdated, especially for infrequently used links, it is desirable to provide a mechanism for occasionally testing links that have not handled packets recently. A feature of the new adaptive-transmission protocol is that it employs information packets, rather than control packets, to update the channel state information and thereby benefit the routing protocol without adding overhead traffic to the network load.","PeriodicalId":136537,"journal":{"name":"2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277)","volume":"135 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113972724","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: 6