2010 - MILCOM 2010 MILITARY COMMUNICATIONS CONFERENCE最新文献_第7页

Dynamic Spectrum Access radio performance for UAS ISR missions UAS ISR任务的动态频谱接入无线电性能

2010 - MILCOM 2010 MILITARY COMMUNICATIONS CONFERENCE Pub Date : 2010-10-01 DOI: 10.1109/MILCOM.2010.5680343

M. McHenry, Youping Zhao, O. Haddadin

{"title":"Dynamic Spectrum Access radio performance for UAS ISR missions","authors":"M. McHenry, Youping Zhao, O. Haddadin","doi":"10.1109/MILCOM.2010.5680343","DOIUrl":"https://doi.org/10.1109/MILCOM.2010.5680343","url":null,"abstract":"The growing demand for Unmanned Aircraft System (UAS) Intelligence, Surveillance, and Reconnaissance (ISR) missions has created a strain on current RF bandwidth utilization and video/data transmission capabilities. Solving this problem is critical to deploying UASs in large numbers. In this paper, we introduce a theoretical ISR mission using multiple UASs communications with multiple ground terminals and dismounted soldiers. Then we describe the use of Dynamic Spectrum Access (DSA) concepts to dynamically select radio operating frequency for the downlink (UAV-to-ground) and for the uplink (ground-to-UAV). DSA radios monitor and characterize the Radio Frequency (RF) spectrum that is in use in a local area; identify available spectrum for reliable communications; and dynamically allocate spectrum usage to networking and legacy waveforms based upon a preprogrammed rule-set. We provide a detailed parametric analysis of the number of UAS links that can be supported with DSA versus the UAS mission area and the target Interference-to-Noise power Ratio (INR) in various scenarios. We determine the benefits of DSA by contrasting DSA-enabled mission versus the traditional frequency planning approach. We describe the DSA software architecture, how it is integrated into existing radios, and its application to typical ISR waveforms such as the Common Data Link (CDL).","PeriodicalId":330937,"journal":{"name":"2010 - MILCOM 2010 MILITARY COMMUNICATIONS CONFERENCE","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131973282","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: 9

Prototyping and optimization of IEEE 802.21-based reconfigurable mobile terminal 基于IEEE 802.21的可重构移动终端原型设计与优化

2010 - MILCOM 2010 MILITARY COMMUNICATIONS CONFERENCE Pub Date : 2010-10-01 DOI: 10.1109/MILCOM.2010.5680363

P. Latkoski, O. Ognenoski, V. Rakovic, L. Gavrilovska

引用次数: 6

Measurements of Multiple-Input Multiple-Output (MIMO) performance under army operational conditions 陆军作战条件下多输入多输出(MIMO)性能测量

2010 - MILCOM 2010 MILITARY COMMUNICATIONS CONFERENCE Pub Date : 2010-10-01 DOI: 10.1109/MILCOM.2010.5680479

Hung-Quoc Lai, Bruce Zannetti, Tony Chin, Derek Morris, J. Koshy, William Macre, J. Liberti, Carol C. Martin

{"title":"Measurements of Multiple-Input Multiple-Output (MIMO) performance under army operational conditions","authors":"Hung-Quoc Lai, Bruce Zannetti, Tony Chin, Derek Morris, J. Koshy, William Macre, J. Liberti, Carol C. Martin","doi":"10.1109/MILCOM.2010.5680479","DOIUrl":"https://doi.org/10.1109/MILCOM.2010.5680479","url":null,"abstract":"This paper presents the results from a field measurement campaign that was conducted to provide an understanding of Multiple-Input Multiple-Output (MIMO) performance relative to that of a Single-Input Single-Output (SISO) system in military-type environments. The Space & Terrestrial Communications Directorate (STCD) MIMO system was used to conduct these experiments. The system has two antennas and operates at transmit frequencies of 430 and 1380MHz, which fall within military frequency bands. A variety of operational environments with many scenarios were considered. The experiments were conducted at C4ISR OTM testing facility, Fort Dix, New Jersey for transmissions along a wide road, a narrow road and through heavy foliage. These experiments measured the throughput gain of MIMO over SISO given the same transmit power and channel usage. The gain in throughput was corroborated by information-theoretic capacity calculations using channel estimates collected during the experimental campaign. In addition, the impact of the antenna spacing on throughput gain was also studied. Depending on the multipath-richness of the environment, the experimental results show that the 2-antenna system provides a throughput of 1.3 to 2.0 times that of a SISO system. On average, a range extension of 1.5 times could be realized for all the considered scenarios and transmit frequencies. The results suggest that antennas in MIMO systems should be placed at least a half of carrier wavelength apart, as indicated in open literature.","PeriodicalId":330937,"journal":{"name":"2010 - MILCOM 2010 MILITARY COMMUNICATIONS CONFERENCE","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130897176","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: 4

Advances in DSP design tool flows for FPGAs fpga的DSP设计工具流程研究进展

2010 - MILCOM 2010 MILITARY COMMUNICATIONS CONFERENCE Pub Date : 2010-10-01 DOI: 10.1109/MILCOM.2010.5680454

Mark Jervis

引用次数: 8

Analog auto-correlation based receiver architecture for radar systems 基于模拟自相关的雷达接收机结构

2010 - MILCOM 2010 MILITARY COMMUNICATIONS CONFERENCE Pub Date : 2010-10-01 DOI: 10.1109/MILCOM.2010.5680196

Michael Lee, Sungho Beck, K. Lim, J. Laskar

引用次数: 3

A cognitive policy management framework for DoD 国防部的认知策略管理框架

2010 - MILCOM 2010 MILITARY COMMUNICATIONS CONFERENCE Pub Date : 2010-10-01 DOI: 10.1109/MILCOM.2010.5679562

M. Sherman, A. Comba, Donya He, H. McDonald

引用次数: 12

Supporting periodic, strong re-authentication in MANET scenarios 在MANET场景中支持周期性、强的重新身份验证

2010 - MILCOM 2010 MILITARY COMMUNICATIONS CONFERENCE Pub Date : 2010-10-01 DOI: 10.1109/MILCOM.2010.5680434

M. Salmanian, Jiangxin Hu, Li Pan, P. Mason, Ming Li

{"title":"Supporting periodic, strong re-authentication in MANET scenarios","authors":"M. Salmanian, Jiangxin Hu, Li Pan, P. Mason, Ming Li","doi":"10.1109/MILCOM.2010.5680434","DOIUrl":"https://doi.org/10.1109/MILCOM.2010.5680434","url":null,"abstract":"A Security Association (SA), established by strong authentication, between a node pair in a Mobile Ad hoc Network (MANET) could be lost when its route is disconnected. In contrast, in good channel conditions and stable topology, routing protocols such as the Optimized Link State Routing (OLSR) do not refresh routes periodically, and in doing so, an SA bound to these routes could become stale and out of date. In this paper we demonstrate a decoupling of the maintenance of the SAs from the link state conditions by introducing a timer that defines the lifetime of the SAs, as well as the periodicity of strong authentications. This timer is implemented within a state machine that also manages other aspects of the authentication process. We implement these changes using a Trust-enhanced Routing Table (TRT), an extension of the OLSR routing table. The state machine and TRT are trialed in a series of MANET simulations in which the topology of the network remains static but channel conditions are made progressively less favorable. By varying the allowed SA duration timer within the state machine, we are able to measure the overhead (cost) associated with maintaining SAs in varying channel conditions. We show that the costs associated with our implementation are generally far lower than if we were to link SAs to standard OLSR routes in the same conditions. Since the allowed lifetime of SA is a security parameter, our results effectively demonstrate a trade-off between security and overhead for our model. Our implementation is designed to be further, and easily, extended to account for additional security parameters as input.","PeriodicalId":330937,"journal":{"name":"2010 - MILCOM 2010 MILITARY COMMUNICATIONS CONFERENCE","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123333515","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

Efficient resource management in future heterogeneous wireless networks: The RIWCoS approach 未来异构无线网络的有效资源管理:RIWCoS方法

2010 - MILCOM 2010 MILITARY COMMUNICATIONS CONFERENCE Pub Date : 2010-10-01 DOI: 10.1109/MILCOM.2010.5680371

V. Atanasovski, V. Rakovic, L. Gavrilovska

{"title":"Efficient resource management in future heterogeneous wireless networks: The RIWCoS approach","authors":"V. Atanasovski, V. Rakovic, L. Gavrilovska","doi":"10.1109/MILCOM.2010.5680371","DOIUrl":"https://doi.org/10.1109/MILCOM.2010.5680371","url":null,"abstract":"Convergence of different wireless access networks and development towards 4G yields a necessity for more efficient resource management procedures in the integrated heterogeneous platform. The notion of resource is fundamentally different in heterogeneous environments (compared to homogeneous ones) as it is spanned across several different wireless solutions. This paper summarizes the development process of a novel architecture for resource management in heterogeneous wireless networks named RIWCoS. The architectural focal point is on the emerging IEEE 802.21 standard because of its ability to enable seamless and transparent vertical handovers. The paper shows simulation results of the IEEE 802.21 benefits and reports on a novel simulation analysis (using newly introduced metrics) of the RIWCoS architecture showing that it outperforms traditional serving policies of users in heterogeneous wireless environments. Moreover, the paper elaborates on a distinguished RIWCoS feature (the SAES algorithm) that enables efficient handling of emergency situations making the RIWCoS architecture suitable for military communications.","PeriodicalId":330937,"journal":{"name":"2010 - MILCOM 2010 MILITARY COMMUNICATIONS CONFERENCE","volume":"46 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126231325","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: 14

Direct spectrum sensing from compressed measurements 直接从压缩测量频谱传感

2010 - MILCOM 2010 MILITARY COMMUNICATIONS CONFERENCE Pub Date : 2010-10-01 DOI: 10.1109/MILCOM.2010.5680103

S. Hong

{"title":"Direct spectrum sensing from compressed measurements","authors":"S. Hong","doi":"10.1109/MILCOM.2010.5680103","DOIUrl":"https://doi.org/10.1109/MILCOM.2010.5680103","url":null,"abstract":"Because current Cognitive Radios are limited in their operational bandwidth by existing hardware devices, much of the extensive theoretical work on spectrum sensing is impossible to realize in practice over a wide frequency band. To solve this problem, many have used Compressive Sensing (CS) in sequence with CRs: first acquiring compressed samples, then reconstructing the Nyquist Rate signal, and lastly performing spectrum sensing on the reconstructed signal. While CS alleviates the bandwidth constraints imposed by front-end ADCs, the resulting increase in computation/complexity is non-trivial, especially in a power-constrained mobile CR. This motivates us to look at different ways to reduce computational complexity while achieving the same goals. In this paper, we will demonstrate how directly performing spectrum sensing from the compressed measurements can achieve the sampling reduction advantage of Compressive Sensing with significantly less computational complexity. Our key observation is that the CR does not have to reconstruct the entire signal because it is only interested in detecting the presence of Primary Users. Our algorithm takes advantage of this observation by estimating signal parameters directly from the compressed signal, thereby eliminating the reconstruction stage and reducing the computational complexity. In addition, our framework provides a measure of the quality of estimation allowing the system to optimize its data acquisition process to always acquire the minimum number of compressed measurements, even in a dynamic spectral environment.","PeriodicalId":330937,"journal":{"name":"2010 - MILCOM 2010 MILITARY COMMUNICATIONS CONFERENCE","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123042727","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: 36

Multicast active probing measurement technique 组播主动探测测量技术

2010 - MILCOM 2010 MILITARY COMMUNICATIONS CONFERENCE Pub Date : 2010-10-01 DOI: 10.1109/MILCOM.2010.5680406

Qihua Yang, T. Saadawi, A. Abdelal, Mitesh P. Patel

引用次数: 1