{"title":"Programmable digital radio","authors":"R. Prill","doi":"10.1109/MILCOM.1997.644959","DOIUrl":"https://doi.org/10.1109/MILCOM.1997.644959","url":null,"abstract":"For several years, GEC-Marconi Hazeltine (GMH) and Northrop Grumman Corp. (NGC) have been developing and field demonstrating a common module programmable digital radio (PDR) for army, air force and navy applications. This third generation 1.5 MHz to 2 GHz software radio handles not only the traditional narrow band waveforms (HF, VHF, UHF), but also many wide band waveforms (Link-16, DWTS, VRC-99) with the same programmable RF modules. It also provides the capability for implementing on-the-move mobile networking such as found in army packet radios.","PeriodicalId":351392,"journal":{"name":"MILCOM 97 MILCOM 97 Proceedings","volume":"165 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132120604","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}
{"title":"Mobility data pattern tracking via multidimensional data view appproach","authors":"Junping Sun, Hee C. Lee","doi":"10.1109/MILCOM.1997.644969","DOIUrl":"https://doi.org/10.1109/MILCOM.1997.644969","url":null,"abstract":"M a n y recent research work showed the importance of mobility data pattern tracking in mobile telecommunication systems since m a n y mobile t racbng and locating strategies depend o n the accuracy of real-time mobility data in mobile data management systems. In order t o support different knowledgebased mobile t m c b n g and locating strategies, the mobile data management system must dynamically and adaptively maintain the mobility data patterns such as traffic density and peaks along different dimensions such as t ime, cells and others. In this paper, we will present a multidimensional approach to keep track of the frequently updated mobility data. Our approach employs an adaptive multidimensional histogram t o do the followings: 1. adaptively adjusting the resolution of mobility data patterns f r o m multidimensional point of view; 2. accurately tracking the real-time mobility data patterns (knowledge) with high resolution.","PeriodicalId":351392,"journal":{"name":"MILCOM 97 MILCOM 97 Proceedings","volume":" 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132125166","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}
{"title":"CAEI's approach for a Texas optical network initiative (TONI) to develop applications for wave division multiplexing (WDM)","authors":"J. Berry","doi":"10.1109/MILCOM.1997.645025","DOIUrl":"https://doi.org/10.1109/MILCOM.1997.645025","url":null,"abstract":"There are two major requirements, increased connectivity and bandwidth, for both military and commercial communications. Running counter to this is the high cost of installing new fiber and replacement of legacy systems. Wave division multiplexing and optical networks built using this technology are emerging as a leading solution to achieving higher bandwidths and channel capacity on existing installed fiber and constructing transparent networks. WDM and optical networking are currently seen by the US Department of Defense as the only way to increase the transmission rates to accommodate the communications needs of the 21/sup st/ century. The ability to accommodate greater data transmission needs is recognized as a national security issue and DARPA have funded two consortia, MONET and NTON, to help develop the WDM technology to accommodate those needs. The two consortia have developed solutions and products for the long distance back haul carrier network. The local exchange solutions are not addressed. However, it is the local exchange solutions that the DoD and most commercial customers need to enable connection to the back haul circuits.","PeriodicalId":351392,"journal":{"name":"MILCOM 97 MILCOM 97 Proceedings","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132677381","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}
J. Staba, J. Binnion, E. Craighill, B. Hicks, S. Seaton
{"title":"Trunked land mobile radio in tactical applications","authors":"J. Staba, J. Binnion, E. Craighill, B. Hicks, S. Seaton","doi":"10.1109/MILCOM.1997.644975","DOIUrl":"https://doi.org/10.1109/MILCOM.1997.644975","url":null,"abstract":"In 1993, DARPA and CECOM embarked on a program called Commercial Communications Technology Testbed (C2T2). The goal of C2T2 was to systematically evaluate the applicability of commercial communication systems to tactical users, specifically the dismounted infantry. After a 6 month study phase, the first commercial system to be evaluated was chosen. This system was a trunked land mobile radio system. The systematic evaluations quickly evolved into a less systematic field use of a C3 system in an advanced warfighting experiment (AWE). This paper describes the communication system, effort required experiences, lessons learned, problems and some of the data provided by the insertion of this radio system into two AWEs: Warrior Focus for the Army Infantry and then Hunter Warrior for the Marine Corps.","PeriodicalId":351392,"journal":{"name":"MILCOM 97 MILCOM 97 Proceedings","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117141695","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}
{"title":"Fault detection and fault isolation in the ground station","authors":"D.C. Elmore, T. Hurd","doi":"10.1109/MILCOM.1997.645007","DOIUrl":"https://doi.org/10.1109/MILCOM.1997.645007","url":null,"abstract":"The satellite ground station environment is one in which the availability of the equipment is normally paramount. Satellite contacts may be scheduled at any time and the data being down-linked may be irreplaceable if the equipment in the ground station is not available to receive it. The satellite may not be able to carry out its mission if necessary data is not up-linked when needed because of equipment outage. Availability is a function of mean time between failures (MTBF) and mean time to restore (MTTR). In many cases, the MTBF is addressed by installing equipment built with highly reliable parts, while MTTR is minimized by the inclusion of redundant equipment in the architecture. If a failure does occur, the redundant equipment can be brought into action only after the failure has been detected, isolated, and reported. In some cases, this is not straight forward. The interaction of multiple pieces of equipment may make a simple diagnosis impossible without further investigation. This paper presents an approach to fault detection and fault isolation (FDFI) which can increase the availability of the equipment by reducing the delay in the discovery and isolation of a fault. The approach can be implemented, in full or in part, based upon a cost benefit trade. If the data is not time critical, or if the procurement budget is constrained, a subset of the techniques and the features discussed may be implemented. Program unique analysis shows the best combination for each application.","PeriodicalId":351392,"journal":{"name":"MILCOM 97 MILCOM 97 Proceedings","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121428589","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}
{"title":"A new priority policy for channel assignment in PCS networks","authors":"S. Sridhar, K. Kang","doi":"10.1109/MILCOM.1997.648681","DOIUrl":"https://doi.org/10.1109/MILCOM.1997.648681","url":null,"abstract":"This paper presents a new policy called the threshold priority policy (TPP) for channel assignment in personal communication service (PCS) networks. The performance of this policy is compared with the performance of the well-known cutoff priority policy (CPP). The major performance measures used include blocking probability of new calls, forced termination probability, overall blocking probability and call non-completion probability. Several simulation experiments are done to study the sensitivity of the different policies to parameters such as offered load and portable mobility. These results are used to validate the analytical results obtained in an earlier study.","PeriodicalId":351392,"journal":{"name":"MILCOM 97 MILCOM 97 Proceedings","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115379225","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}
{"title":"Virtual tree path management for battlefield networks","authors":"A. Sethi, P. Ramarao","doi":"10.1109/MILCOM.1997.645012","DOIUrl":"https://doi.org/10.1109/MILCOM.1997.645012","url":null,"abstract":"Virtual trees are source-rooted trees in ATM networks in which VCs originating at the source but going to different destinations can share some of the bandwidth pre-allocated to the VT, thus providing an additional multiplexing advantage over virtual paths. Non-ATM protocols such as MIL-STD-188-220A can also take advantage of virtual trees because source concatenation provides a benefit very similar to ATM multiplexing. We describe the results of a simulation study which shows that virtual tree configurations have almost 40% lower cost than corresponding virtual path configurations. Applications of this work to dynamic routing schemes for battlefield wireless networks are outlined.","PeriodicalId":351392,"journal":{"name":"MILCOM 97 MILCOM 97 Proceedings","volume":"382 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115989334","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}
{"title":"Load shedding, routing and frequency selection algorithms for high frequency hub networks","authors":"M. Scholz, P. Stimson","doi":"10.1109/MILCOM.1997.645011","DOIUrl":"https://doi.org/10.1109/MILCOM.1997.645011","url":null,"abstract":"Described is a suite of integrated high frequency (HF) network management algorithms used in modelling a large Australian military HF tactical information network (HF Modernisation Project). The algorithms perform automatic node selection (routing), frequency selection and traffic load shedding in such a way as to maintain a high grade of service (GOS) for the highest priority traffic classes when a network is overloaded by offered traffic and when there are insufficient frequencies available to support traffic flows at times of poor ionospheric propagation and high spectral interference. We present simulation results which demonstrate the benefit and effectiveness of our algorithms in a large (205 node) hub network.","PeriodicalId":351392,"journal":{"name":"MILCOM 97 MILCOM 97 Proceedings","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116852293","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}
{"title":"Turbo code concepts made easy, or how I learned to concatenate and reiterate","authors":"B. Sklar","doi":"10.1109/MILCOM.1997.648658","DOIUrl":"https://doi.org/10.1109/MILCOM.1997.648658","url":null,"abstract":"The goal of this paper is to describe the main ideas behind the new class of codes called turbo codes, whose performance in terms of bit-error-probability has been shown to be very close to the Shannon limit. The benefits of these concatenated codes are illustrated in the context of likelihood functions and a posteriori probabilities. Since the algorithms needed to implement the decoders have been well documented by others, they are only referenced here, but not described in detail. A numerical example, using a simple concatenated coding scheme, provides a vehicle for explaining how error performance can be improved when soft outputs from the decoders are used in an iterative decoding process.","PeriodicalId":351392,"journal":{"name":"MILCOM 97 MILCOM 97 Proceedings","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114646512","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}
{"title":"A mission-based ATM network manager","authors":"T. Parsons, M. Martone","doi":"10.1109/MILCOM.1997.645022","DOIUrl":"https://doi.org/10.1109/MILCOM.1997.645022","url":null,"abstract":"As military communication networks begin to migrate to hybrid Internet protocol (IP)/asynchronous transfer mode (ATM) technology a new set of requirements for network management is evolving. The collaborative promise of ATM networking cannot be fully realized with current management systems. Moreover, emerging multimedia C2I applications impose unique, variable, and mission-sensitive requirements on the network infrastructure. A need exists for a new model of network management. This paper describes an ATM network manager which is capable of managing the ATM network, workstation, and user applications. The manager dynamically optimizes network routing, link bandwidth allocation, ATM policing, and other QoS parameters. Host configuration and application parameters can be tuned for optimum performance, where possible. The paper also outlines how a military operational scenario, a user/application description, and a historical network performance database are used, along with real-time network measurement inputs, to dynamically control and optimize the managed elements of the system. Before an operational mission, inputs such as data and application types, user/data priorities, network deployment information, and event timelines are translated into a management ruleset. This ruleset, along with historical data on network performance and real-time measured performance data, are used by the network manager whenever a communication occurs to optimally set up the ATM connection parameters of the network host, and application. Finally, the paper discusses an implementation of the mission-based ATM network manager. Progress to date is described.","PeriodicalId":351392,"journal":{"name":"MILCOM 97 MILCOM 97 Proceedings","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116764800","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}