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Proceedings of MILCOM '93 - IEEE Military Communications Conference最新文献

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Performance evaluation of a Starlite-like architecture for ATM switching 用于ATM交换的类似starlite架构的性能评估
Proceedings of MILCOM '93 - IEEE Military Communications Conference Pub Date : 1993-10-11 DOI: 10.1109/MILCOM.1993.408499
E. Foo, T. Robertazzi
{"title":"Performance evaluation of a Starlite-like architecture for ATM switching","authors":"E. Foo, T. Robertazzi","doi":"10.1109/MILCOM.1993.408499","DOIUrl":"https://doi.org/10.1109/MILCOM.1993.408499","url":null,"abstract":"ATM is a potential next generation technology for applications needing high speed local communications such as ground based military communications networks and intra-platform communications in such environments as in ships and planes. The authors examine a starlite-like switching architecture for ATM applications. The switching architecture consists primarily of a Batcher sorting network and a Banyan switching network. A performance evaluation of the architecture, based on both analysis and simulation is carried out. A discrete time queuing analysis is utilized due to the slotted nature of the system. Cells (packets) that are unable to make it through the system due to contention for resources are queued in a central buffer and then recirculated. Performance measures such as mean queue length and cell loss probability are presented.<<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":"130766117","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
Measures of spectrum utilization in digital radio systems 数字无线电系统频谱利用措施
Proceedings of MILCOM '93 - IEEE Military Communications Conference Pub Date : 1993-10-11 DOI: 10.1109/MILCOM.1993.408633
M. Dababneh, R. Macario, T. Davies
{"title":"Measures of spectrum utilization in digital radio systems","authors":"M. Dababneh, R. Macario, T. Davies","doi":"10.1109/MILCOM.1993.408633","DOIUrl":"https://doi.org/10.1109/MILCOM.1993.408633","url":null,"abstract":"The security of radio spectrum and increasing consumer demand have brought many of today's analog mobile communication systems to the brink of saturation. A number of international committees are addressing this problem by proposing new digital transmission systems, claiming that in the long term spectrum will be utilized more effectively. The impetus for this research is the hypothesis that certain digital cellular systems utilize the allocated spectrum more efficiently than others. An extensive literature survey, conducted in order to shed some light on this particular subject, has yielded a sparsity of work addressing this issue, indicating a need for further research. The authors describe a study of the relative performance of different digital communication sytems (civilian or military) from the viewpoint of spectrum utilization. They also propose new techniques for the simulation of Rayleigh fading and for the accurate measurement of Doppler frequency shifts. It is confirmed that optimum spectrum efficiency is achieved by adopting digital narrowband access technology and diversity technique to mitigate the effects of multipath fading. Maximum efficiency performance is achieved at an optimum coding rate K = 80% for the diversity case; that is, a 13% improvement over the nondiversity case. It is also suggested that the European GSM system capacity is 6.5 times lower than the Japanese JDC system, and 5.5 times lower than the North American ADC system.<<ETX>>","PeriodicalId":323612,"journal":{"name":"Proceedings of MILCOM '93 - IEEE Military Communications Conference","volume":"11 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":"126584236","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: 1
Signal design for infinite impulse response inverse filters 无限脉冲响应反滤波器的信号设计
Proceedings of MILCOM '93 - IEEE Military Communications Conference Pub Date : 1993-10-11 DOI: 10.1109/MILCOM.1993.408625
W.-C. Wang, R. Scholtz
{"title":"Signal design for infinite impulse response inverse filters","authors":"W.-C. Wang, R. Scholtz","doi":"10.1109/MILCOM.1993.408625","DOIUrl":"https://doi.org/10.1109/MILCOM.1993.408625","url":null,"abstract":"An infinite impulse response (IIR) inverse filter structure is presented, and compared with the performance of two finite impulse response (FIR) designs. The IIR design is shown to provide better performance and be able to improve further (e.g., -1.4 dB in sidelobe levels per unit delay increase for a length-13 Barker sequence) by increasing delay. The performance parameters of this IIR inverse filter suggest a design criterion for sequences on which the filter operates, that is related to the roots of the sequence's Z transform polynomial. The optimal sequence derived according to this criterion is shown to provide sharper sidelobe reduction (-6 dB per unit delay increase for the optimal length-13 sequence).<<ETX>>","PeriodicalId":323612,"journal":{"name":"Proceedings of MILCOM '93 - IEEE Military Communications Conference","volume":"40 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":"127800679","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: 2
An analysis of MMW wireless LANs for LPI/AJ command post communications 用于LPI/AJ指挥所通信的毫米波无线局域网分析
Proceedings of MILCOM '93 - IEEE Military Communications Conference Pub Date : 1993-10-11 DOI: 10.1109/MILCOM.1993.408602
B. Harvey, D. H. Howard, E. N. Barnhart, F. Loso, J. Staba
{"title":"An analysis of MMW wireless LANs for LPI/AJ command post communications","authors":"B. Harvey, D. H. Howard, E. N. Barnhart, F. Loso, J. Staba","doi":"10.1109/MILCOM.1993.408602","DOIUrl":"https://doi.org/10.1109/MILCOM.1993.408602","url":null,"abstract":"Millimeter-wave (MMW) communications at frequencies near 60 GHz suffer extremely high propagation losses due to absorption by oxygen molecules in the atmosphere. While atmospheric absorption makes the frequency band near 60 GHz unsuitable for long-range communications systems, it does provide some very useful attributes for short-range links including frequency reuse, LPI/AJ features, and small size for mobile communications and command-on-the-move capability. Three hypothetical covert MMW wireless LAN configurations for mobile command post communications are presented and investigated. The performance of each configuration is analyzed in benign and hostile environments while operating in the 54 - 58 GHz frequency band. A MMW LAN is shown to have excellent AJ/LPI performance, especially at higher frequencies (near 58 GHz), and, for some of the options, to provide moderate link ranges, even in rainy conditions. The MMW LAN options presented are also shown to have a variety of other features which are advantageous for a command post, including command-on-the-move, rapid set-up and breakdown of the network, and the ability to disperse the command post far beyond what is possible using cable LANs.<<ETX>>","PeriodicalId":323612,"journal":{"name":"Proceedings of MILCOM '93 - IEEE Military Communications Conference","volume":"15 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":"115536325","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: 10
Integrating message, voice, and tracking data on UHF DAMA networks 在UHF DAMA网络上集成消息、语音和跟踪数据
Proceedings of MILCOM '93 - IEEE Military Communications Conference Pub Date : 1993-10-11 DOI: 10.1109/MILCOM.1993.408581
G. Young, S. Hart, J. Tran, P. Hudson, M. Dankberg
{"title":"Integrating message, voice, and tracking data on UHF DAMA networks","authors":"G. Young, S. Hart, J. Tran, P. Hudson, M. Dankberg","doi":"10.1109/MILCOM.1993.408581","DOIUrl":"https://doi.org/10.1109/MILCOM.1993.408581","url":null,"abstract":"The Copernicus TADIX approach (using the MUST protocol) provides a significant performance and capability improvement over the current IXS systems. A key part of this improvement is the Copernicus TADIXS ability to simultaneously manage different types of communication services (message, voice, and tracking data). The MUST protocol has the unique ability to allocate DAMA channel capacity so that the requirements of each communication service are satisfied. Furthermore, the Copernicus TADIXS approach to use of the DAMA channel results in better throughput and less delay. The need to increase the availability of UHF SATCOM is clear, and it will become even more important as advanced communication systems try to use the crowded UHF SATCOM channels.<<ETX>>","PeriodicalId":323612,"journal":{"name":"Proceedings of MILCOM '93 - IEEE Military Communications Conference","volume":"362 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":"114353969","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
A new fractal generation and lossless data compression 一种新的分形生成和无损数据压缩
Proceedings of MILCOM '93 - IEEE Military Communications Conference Pub Date : 1993-10-11 DOI: 10.1109/MILCOM.1993.408621
D. Chi
{"title":"A new fractal generation and lossless data compression","authors":"D. Chi","doi":"10.1109/MILCOM.1993.408621","DOIUrl":"https://doi.org/10.1109/MILCOM.1993.408621","url":null,"abstract":"Fractal techniques for image compression have attracted a great deal of attention because of high compression ratio. Unfortunately, those methods cannot be applied to lossless data compression. The author presents a novel method to generate discrete fractals by using numbers. He also presents techniques for lossless data compression based on these new fractals. This method might promise lossless data compression ratios never before thought possible.<<ETX>>","PeriodicalId":323612,"journal":{"name":"Proceedings of MILCOM '93 - IEEE Military Communications Conference","volume":"2014 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":"117064936","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
Evolving modeling and simulation technology into fieldable products 将建模和仿真技术发展为可应用的产品
Proceedings of MILCOM '93 - IEEE Military Communications Conference Pub Date : 1993-10-11 DOI: 10.1109/MILCOM.1993.408689
J.M. Siliato, W.P. Sudnikovich, L. Kennedy, R.D. Hallgring
{"title":"Evolving modeling and simulation technology into fieldable products","authors":"J.M. Siliato, W.P. Sudnikovich, L. Kennedy, R.D. Hallgring","doi":"10.1109/MILCOM.1993.408689","DOIUrl":"https://doi.org/10.1109/MILCOM.1993.408689","url":null,"abstract":"The US Army Communications-Electronics Command Research, Development and Engineering Center's Space and Terrestrial Communications Directoriate (S&TCD) has a long history of developing computer simulation models of complex command, control, communications (C3) and intelligence systems to assist in concept exploration, feasibility studies, requirements analysis, design evaluations, and test planning. As these computer models have been completed, spin-off applications have been identified and S&TCD has evolved these applications into products fieldable to the Army for use on the battlefield. This paper discusses the methodology and capabilities employed by S&TCD in developing/implementing such products using its evolution of a portion of the Mobile Subscriber Equipment (MSE) System Performance Model into the C3 Network Planner (C3NP) as an example. The C3NP fielding was imminent as part of the Network Planning Terminal (NPT) program managed by the Program Manager, Joint Tactical Area Communications Systems (Provisional).<<ETX>>","PeriodicalId":323612,"journal":{"name":"Proceedings of MILCOM '93 - IEEE Military Communications Conference","volume":"34 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":"123219207","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
Applications of precise time and frequency to current and future NATO SATCOM 精确时间和频率在当前和未来北约卫星通信中的应用
Proceedings of MILCOM '93 - IEEE Military Communications Conference Pub Date : 1993-10-11 DOI: 10.1109/MILCOM.1993.408553
J. Farserotu
{"title":"Applications of precise time and frequency to current and future NATO SATCOM","authors":"J. Farserotu","doi":"10.1109/MILCOM.1993.408553","DOIUrl":"https://doi.org/10.1109/MILCOM.1993.408553","url":null,"abstract":"Precise time and frequency (PT&F) play an increasingly important role in digital communications systems and networks. Precise time is required for entry into the network, network synchronization, and link acquisition. Precise frequency is required to maintain synchronization, and to ensure that the accumulation of frequency offset and time interval error (TIE), which may result in loss of bit count integrity (BCI), is consistent with end-to-end performance objectives.<<ETX>>","PeriodicalId":323612,"journal":{"name":"Proceedings of MILCOM '93 - IEEE Military Communications Conference","volume":"102 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":"123538316","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
A unique, robust low-rate HF radio modem 一个独特的，强大的低速率高频无线电调制解调器
Proceedings of MILCOM '93 - IEEE Military Communications Conference Pub Date : 1993-10-11 DOI: 10.1109/MILCOM.1993.408495
J. Scholz, T. Giles, M. Gill
{"title":"A unique, robust low-rate HF radio modem","authors":"J. Scholz, T. Giles, M. Gill","doi":"10.1109/MILCOM.1993.408495","DOIUrl":"https://doi.org/10.1109/MILCOM.1993.408495","url":null,"abstract":"Military HF radio modems are required to operate over a broad range of adverse channel conditions such as severe multipath and fading, partial-band and carrier-wave interference as well as Gaussian and impulsive noise. The theory of operation and simulation results for a modem capable of providing reliable, low error rate performance in the presence of these harsh forms of interference and distortion is described. The detection is maximum likelihood and is based on a partial-band noise/interference model and the assumption of slow fading. Rejection of interference is facilitated by processing in time and frequency domains. An implementation, allowing a data rate of 75 bits/s, which uses a PSK modulated carrier swept over a 3 kHz bandwidth is described in detail. Simulation results with carrier wave (CW) interference, multipath distortion, Gaussian and impulse noise conditions are presented, demonstrating the exceptional detection performance attainable.<<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":"117000185","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
An ATM traffic measurement tool 一个ATM流量测量工具
Proceedings of MILCOM '93 - IEEE Military Communications Conference Pub Date : 1993-10-11 DOI: 10.1109/MILCOM.1993.408497
G. Keiser, C. Seneski, C. Sullivan, J. Tracey, L. Wetmore
{"title":"An ATM traffic measurement tool","authors":"G. Keiser, C. Seneski, C. Sullivan, J. Tracey, L. Wetmore","doi":"10.1109/MILCOM.1993.408497","DOIUrl":"https://doi.org/10.1109/MILCOM.1993.408497","url":null,"abstract":"Standards bodies and equipment vendors have made significant progress in the development and implementation of the asynchronous transfer mode (ATM) scheme as the transport vehicle fo high-speed multimedia networks. When using ATM for defense, national security, emergency, and disaster recovery applications, a key factor is for ATM to meet the priority requirements for transmission and signaling in hostile, emergency, and crisis situations. Although theoretical and simulation studies have been carried out on this, measurement equipment and techniques are required to analyze real ATM traffic and to compare the data with theoretical models. The authors describe equipment and methodologies being used in an ATM testbed. In this testbed, an ATM traffic analyzer generates ATM traffic based on a user-selectable statistical distribution. At the receiving end, the traffic analyzer produces performance metrics to validate ATM switch and network performance. The performance parameters being measured include ATM cell loss, cell delay, cell delay variation, and cell error for traffic with various priority levels.<<ETX>>","PeriodicalId":323612,"journal":{"name":"Proceedings of MILCOM '93 - IEEE Military Communications Conference","volume":"98 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":"124069239","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: 1
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