{"title":"Performance of trellis coded modulation with 8PSK through TDRSS","authors":"W. Osborne, T. Wolcott","doi":"10.1109/MILCOM.1993.408678","DOIUrl":"https://doi.org/10.1109/MILCOM.1993.408678","url":null,"abstract":"The need to increase data-rate capabilities of the Tracking and Data Relay Satellite System (TDRSS) has prompted NASA to investigate bandwidth-efficient modulation schemes. Based upon current technology the most promising scheme is Trellis-Coded Modulation (TCM) operating with Octal Phase Shift Keying (8 PSK). In conjunction with NASA, New Mexico State University's Manuel Lujan Jr. Center for Space Telemetering and Telecommunications Systems has constructed a system to test this new candidate TDRSS modulation scheme, TCM 8 PSK. This system was tested through the TDRSS channel to demonstrate that this coding scheme operates as well over the actual channel as it has in lab experiments and simulations. Two interchangeable codecs, implementing separate TCM techniques, were tested. The results of this experiment and subsequent data analysis are presented in this paper.<<ETX>>","PeriodicalId":323612,"journal":{"name":"Proceedings of MILCOM '93 - IEEE Military Communications Conference","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126981832","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":"Technology assessment and insertion for the Defense Information Systems Network (DISN)","authors":"W. Blohm, H. Bylund, C. DeFiore, S.H. Shah","doi":"10.1109/MILCOM.1993.408661","DOIUrl":"https://doi.org/10.1109/MILCOM.1993.408661","url":null,"abstract":"The DISN will evolve with new capabilities being added based on requirements and availability of technologies. The identification and transition of technologies from the research and development communities, including service laboratories, industry, and academia, to the acquisition managers require an approved process that defines the methodology and assigns responsibilities. The main purpose of this paper is to present and discuss the strategy for technology insertion into DISN. In order to accomplish this, a management process for technology insertion has been defined which addresses three key issues to insure that the programmatic/cost and technical risks are minimized. The principal driver for technology insertion is the identification of candidate technologies that are in concert with the approved DISN architecture which have the potential to enhance the capabilities of the DISN in meeting the needs of the warfighters/customers in a cost effective way.<<ETX>>","PeriodicalId":323612,"journal":{"name":"Proceedings of MILCOM '93 - IEEE Military Communications Conference","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124328928","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":"An edge detection technique for fine acquisition in frequency hopping radios","authors":"J. Hampton","doi":"10.1109/MILCOM.1993.408521","DOIUrl":"https://doi.org/10.1109/MILCOM.1993.408521","url":null,"abstract":"The author describes a technique for achieving fine acquisition in frequency hopping radios based on the detection of the onset of energy in each hop. By estimating the start of each hop and combining these estimates from many hops, it is shown to be possible to obtain accurate hop time synchronization. The advantage of this technique is that it is inherently immune to the effects of follower jammers. Performance predictions of the proposed scheme against both thermal noise and partial band tone jamming is presented based on computer simulation results. These predictions show that edge-detection can provide acceptable timing accuracy for push-to-talk frequency hopping radios in AWGN and partial band tone jamming.<<ETX>>","PeriodicalId":323612,"journal":{"name":"Proceedings of MILCOM '93 - IEEE Military Communications Conference","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124447113","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":"Submarine communication peformance in Naval tactical intra-task force networks","authors":"G. Exley, L. Reiss, L. Merakos","doi":"10.1109/MILCOM.1993.408579","DOIUrl":"https://doi.org/10.1109/MILCOM.1993.408579","url":null,"abstract":"When participating in an intra-task force communications network, an attack submarine (SSN) is disadvantaged with respect to the other participating platforms for the following reasons. 1) Because of the nature of its missions, it participates in the network on an intermittent basis. Thus, its connectivity is disadvantaged in terms of time. 2) Its connectivity is also disadvantaged in terms of distance and link quality because its antennas are poorer. This disadvantaged connectivity is especially problematic in networks which, for reasons of adaptability and survivability, use protocols which are dynamic and are based on distributed control. The authors present the results of a study of enhancements to the baseline handoff assignment multiple access/ minimum cover approximation (HAMA/MINCAP) intra-task force network protocols to deal with the problems associated with the participation of SSNs in the network. The problems associated with SSN participation in this network are typical of such networks and thus the results have a more general applicability.<<ETX>>","PeriodicalId":323612,"journal":{"name":"Proceedings of MILCOM '93 - IEEE Military Communications Conference","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122119519","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":"VHF-UHF propagation performance predictions for low altitude communication links operating over water","authors":"J. Ekstrom","doi":"10.1109/MILCOM.1993.408597","DOIUrl":"https://doi.org/10.1109/MILCOM.1993.408597","url":null,"abstract":"The Kerr (MIT Rad Lab Vol. 13) graphical approximation for the height-gain functions used in trans-horizon diffraction propagation field strength computations are modified so as to be valid, assuming wavelengths of 3 meters or less, for all surface media, both polarizations, and low antenna heights down to zero. The modifications are particularly important for VHF-UHF vertically polarized propagation over sea water between low altitude electromagnetic platforms.<<ETX>>","PeriodicalId":323612,"journal":{"name":"Proceedings of MILCOM '93 - IEEE Military Communications Conference","volume":"295 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126498313","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":"Bandwidth optimization for combined equalization and coding transceivers with emphasis on the MMSE-DFE","authors":"N. Al-Dhahir, J. Cioffi","doi":"10.1109/MILCOM.1993.408623","DOIUrl":"https://doi.org/10.1109/MILCOM.1993.408623","url":null,"abstract":"The problem of optimizing the transmission bandwidth of practical coded-modulation transceivers on linear time-invariant (LTI) dispersive channels corrupted by additive white Gaussian noise (AWGN) and crosstalk, with particular emphasis on digital subscriber loops, is studied. Under the assumption of a flat input power distribution over the transmission bandwidth, four criteria for bandwidth optimization are analyzed and compared. The main focus is on the ideal infinite-length minimum-mean-square error decision feedback equalizer (MMSE-DFE), however, finite-length constraints are also considered. Furthermore, comparisons between the optimal bandwidth and performance of the MMSE-DFE and a multichannel modulation (MCM) transceiver, under a variety of operating conditions, are presented.<<ETX>>","PeriodicalId":323612,"journal":{"name":"Proceedings of MILCOM '93 - IEEE Military Communications Conference","volume":"46 13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123096945","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}
V. Procopio, K.H. Brockel, J.R. Inserra, F.G. Loso, P. Major, K. D. Chaney, R. J. Locher, A. Vigants, M. Riehl, W. Barnett
{"title":"Tactical line-of-sight radio propagation reliability modeling","authors":"V. Procopio, K.H. Brockel, J.R. Inserra, F.G. Loso, P. Major, K. D. Chaney, R. J. Locher, A. Vigants, M. Riehl, W. Barnett","doi":"10.1109/MILCOM.1993.408596","DOIUrl":"https://doi.org/10.1109/MILCOM.1993.408596","url":null,"abstract":"The Army Operations warfighting concept includes a need for reliable tactical communications worldwide. A line-of-sight (LOS) propagation reliability working group, convened by the US Army Communications-Electronics Command, has developed a propagation reliability model that relates the reliability of an LOS link to path length, radio frequency, equipment capability, and geophysical and meteorological variables. The geophysical and meteorological variables are described in terms of a climate factor. The importance of climate on the reliability of communications links has been amply demonstrated by experience in Southwest Asia. The propagation reliability model has been incorporated in a new battlefield automated system, the Joint Tactical Area Communications Systems (Provisional) Network Planning Terminal (NPT). The NPT provides the US Army with new capabilities for network planning and management, frequency management, communications engineering, and electronic warfare threat analysis of LOS tactical communications links for deployment anywhere in the world.<<ETX>>","PeriodicalId":323612,"journal":{"name":"Proceedings of MILCOM '93 - IEEE Military Communications Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128399486","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":"MSE network control in a mobile environment","authors":"T. C. Pasierb","doi":"10.1109/MILCOM.1993.408696","DOIUrl":"https://doi.org/10.1109/MILCOM.1993.408696","url":null,"abstract":"The Mobile Subscriber Equipment (MSE) currently in use by the US Army comprises a network of communications equipment designed to provide total telecommunications service to an Army Corps and its attached Divisions. Control of the network is accomplished by use of the System Control Center (SCC). An overview of the MSE network is provided, with particular emphasis on the portions of the system involved in network control.<<ETX>>","PeriodicalId":323612,"journal":{"name":"Proceedings of MILCOM '93 - IEEE Military Communications Conference","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133233917","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":"An open and modular system management architecture for a U.S. Navy Copernican Cinc Command Complex (CCC)","authors":"A.A. Covo, R.R. Voruganti, J.J. Byleckie","doi":"10.1109/MILCOM.1993.408582","DOIUrl":"https://doi.org/10.1109/MILCOM.1993.408582","url":null,"abstract":"The Copernican Cinc Command Complex (CCC) is one of the pillars constituting Copernicus - a new C/sup 4/I architecture being developed by the US Navy. The CCC comprises a large number of shore-based command centers and staff organizations, each of which is associated with one or more local area networks (LANs) and metropolitan area networks (MANs). The MANs/LANs form a hierarchical internetwork. The authors present a similar distributed/hierarchical CCC management structure in which each major management center controls an individual LAN or MAN, or a special LAN/MAN grouping. To meet Copernicus requirements, each management center is configured by adding mission-specific application software to a COTS generic Network Management Platform (NMP). The mission-specific applications will include standards-based COTS element managers and veneer application programs. Selection of these network management application programs will be based on migration to emerging national, international standards and profiles such as OSI Network Management Standards and Government Network Management Profiles (GNMP).<<ETX>>","PeriodicalId":323612,"journal":{"name":"Proceedings of MILCOM '93 - IEEE Military Communications Conference","volume":"36 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132193807","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":"The operational use of an automated high frequency radio system incorporating automatic link establishment and single-tone serial modem technology for U.S. Navy ship-shore communications","authors":"T. Danielson, J. Ramos","doi":"10.1109/MILCOM.1993.408541","DOIUrl":"https://doi.org/10.1109/MILCOM.1993.408541","url":null,"abstract":"The US Navy has all but ceased to use high frequency (HF) radio for long-haul ship-shore communications. Satellite systems have rightfully assumed this role, but the antiquated nature of the Navy HF system has soured planners on even considering HF for supplementary uses or other roles. In an attempt to dispel this undeserved reputation and gain operating experience for application of automation to new shipboard HF systems, an HF radio communications system incorporating automatic link establishment (ALE), single-tone serial modems and 500-watt transceivers was deployed on USS TARAWA (LHA-1) and to serving Navy shore communications stations during her recent deployment to the Indian Ocean and Persian Gulf. The authors describe the use of this system for bidirectional 600 baud message traffic. This is the first application of the combination of MIL-STD-188-141A ALE and MIL-STD-188-100A single tone serial modem technology in a US Navy operational environment. The ALE radio system was used to automatically test and select the best channel from among several assigned frequencies and establish a link between ship and shore. Accumulated message traffic was then passed over the single-tone serial modem to the distant end. Technical details of the installation and operational techniques are presented along with a discussion of how automation greatly reduced the level of skill and experience needed to successfully operate this HF system. Test results are presented which illustrate the success enjoyed in maintaining communications over paths which had long been considered unworkable with existing shipboard HF equipment and techniques. The potential for application of automated HF to short-range over-the-horizon (OTH) communication needs for littoral warfare is also discussed.<<ETX>>","PeriodicalId":323612,"journal":{"name":"Proceedings of MILCOM '93 - IEEE Military Communications Conference","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133380966","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}