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

{"title":"Software defined radios (SDR) platform and application programming interfaces (API)","authors":"B. Tarver, E. Christensen, A. Miller","doi":"10.1109/MILCOM.2001.985781","DOIUrl":"https://doi.org/10.1109/MILCOM.2001.985781","url":null,"abstract":"A software defined radio, as defined by the Federal Communications Commission (FCC) Notice of Proposed Rule Making (NPRM), FCC 00-430, is fully software driven and performs all digital signal processing using programmable digital signal processors, general purpose microprocessors, or field programmable gate arrays. All functions, modes, and applications can be reconfigured by software. More importantly, new capability can be added without hardware changes enabling a new generation of communication waveform developers to create new applications without intimate alliances with radio manufacturers. However, to be successful, the union of the application with the platform must be clearly understood with well-defined application programming interfaces (APIs). The well-defined interfaces form the contract between the application developer and the platform developer. The well-defined interfaces allow an application developer to develop an application once, that executes on many different manufacturers' platforms and provides the platform developer consistent interfaces under which platform technologies can evolve separately from the application. An application is independent of the platform it runs on if it is not coupled to a specific platform implementation, i.e., does not require platform unique hardware or software components for execution. The application accesses platform services through well-defined public interfaces that support the entire lifecycle of the application, i.e., from installation of the application through removal of the application from any given platform. This paper discusses SDR software architecture features, the need and definition of a common set of APIs and their extensibility into classes addressing factors such as cost and capability.","PeriodicalId":136537,"journal":{"name":"2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277)","volume":"587 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":"123138755","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":"Data link layer design for wireless sensor networks","authors":"Lizhi C. Zhong, J. Rabaey, Chunlong Guo, R. Shah","doi":"10.1109/MILCOM.2001.985818","DOIUrl":"https://doi.org/10.1109/MILCOM.2001.985818","url":null,"abstract":"This paper presents the architecture of data link layer for wireless sensor networks. Requirements are specified and the functional description is given. The relationship between different subsystems is also discussed. The designed data link layer has ultra-low power consumption. It is distributed, simple and robust. Additionally, it requires no synchronization.","PeriodicalId":136537,"journal":{"name":"2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277)","volume":"3 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":"122293425","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 ActComm project: mobile agents and ad hoc routing meeting military requirements for information superiority","authors":"S. McGrath, E. B. Entin, R. Gray, Lisa A. Shay","doi":"10.1109/MILCOM.2001.985829","DOIUrl":"https://doi.org/10.1109/MILCOM.2001.985829","url":null,"abstract":"Trends in military operations indicate the need for information systems with greater mobility and processing capabilities to maintain information superiority on the battlefield. We present research in technology areas critical to achieving future visions of information superiority cited by the US military. The two technologies discussed are mobile agents and ad hoc wireless networking. A mobile agent is a form of mobile code, an executable program that can move at will from one machine to another. Mobile agents are used to move computation to more suitable network locations, often to avoid the use of unreliable or low-bandwidth network links. Mobile agents are also used to autonomously filter and transport data from remote locations to save bandwidth and increase the timeliness of the data being delivered. In a mobile environment, a wireless communication network provides an efficient means of communication among soldiers. Constant movement of individual and groups of soldiers in the field means the wireless network must maintain a dynamically updated routing system for transmitting messages. This can be achieved using ad hoc wireless routing protocols. We discuss a 21/sup st/ century military scenario developed to demonstrate how mobile code and ad hoc wireless networking technologies can help overcome current military infrastructure limitations. The scenario involves an urban peacekeeping mission in which soldiers identify and apprehend terrorists within a building. The D'Agents mobile agent system is used as the core infrastructure to provide fault tolerant, intelligent information processing and communication among soldiers. The Any Path Routing without Loops (APRL) algorithm allows soldiers to maintain connectivity in spite of physical movement in the urban setting. Experimentation included execution of the scenario in multiple outdoor trials. Results indicate that mobile agents and ad hoc routing protocols can overcome many current limitations of mobile information processing systems.","PeriodicalId":136537,"journal":{"name":"2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277)","volume":"160 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":"116157465","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 application of interleaver in the multilevel coding system over the Rayleigh fading channel","authors":"D. Yuan, Xuemei Zhu","doi":"10.1109/MILCOM.2001.985956","DOIUrl":"https://doi.org/10.1109/MILCOM.2001.985956","url":null,"abstract":"We research block multilevel coding (MLC) with different interleavers, which are bit interleaver and symbol interleaver, for the Rayleigh fading channel. These schemes are both based on Ungerbock partitioning. We construct schemes that follow the capacity rule to show that there is optimum trade-off between power and bandwidth efficiency. By computer simulation, it is shown that the MLC with bit interleaver can gain 2 dB, whereas with symbol interleaver there is no difference compared to the MLC without interleaver.","PeriodicalId":136537,"journal":{"name":"2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277)","volume":"137 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":"116735603","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":"Implementing message priority policies over an 802.11 based mobile ad hoc network","authors":"Xavier Pallot, Leonard E. Miller","doi":"10.1109/MILCOM.2001.985962","DOIUrl":"https://doi.org/10.1109/MILCOM.2001.985962","url":null,"abstract":"In a mobile ad hoc network (MANET) for military or emergency applications, it is required to give priority to certain messages or message sources. In this paper, mechanisms are considered for implementing priority treatment of packets in a MANET using the DSR ad hoc network multihop routing protocol based on modifying an IEEE 802.11 MAC layer operating in the distributed mode. The mechanisms include queuing in order of priority and several methods for giving higher priority messages an advantage in contending for channel access. Simulation results are given for OPNET models of these schemes.","PeriodicalId":136537,"journal":{"name":"2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277)","volume":"40 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":"121721376","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 extended-life sensor networking prototype system","authors":"M. Landel, M. Chevalier, A. Chan","doi":"10.1109/MILCOM.2001.985816","DOIUrl":"https://doi.org/10.1109/MILCOM.2001.985816","url":null,"abstract":"Microsensor networks will be important tools in the creation of the information force, providing remote sensing for operations such as area denial, search and rescue, and MOUT. Many efforts have focused on single elements of the intelligent microsensor network, but this paper presents an approach for complete system development. This approach includes algorithm, protocol, hardware, and prototype development stages leading toward the creation of extended-life sensor network nodes suitable for forward battlefield deployment. The resulting ad-hoc network will provide an intelligent radio communications system that can automatically self-configure into a network upon deployment in the field and which can support a variety of sensors. Finally we discuss some of the algorithms necessary to implement a complete system, including distributed discovery, routing and network configuration.","PeriodicalId":136537,"journal":{"name":"2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277)","volume":"7 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":"121809590","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":"Performance of multicarrier CDMA uplink with serial concatenated convolutional coding and successive interference cancellation","authors":"P. Kafle, A. Sesay","doi":"10.1109/MILCOM.2001.986018","DOIUrl":"https://doi.org/10.1109/MILCOM.2001.986018","url":null,"abstract":"In this paper, the performance of a serially concatenated convolutional code (SCCC) is evaluated for high-bit-rate data transmission in a wideband multicarrier CDMA system. A multipath fading environment is considered with a typical mobile speed and interleaving schemes. Multistage successive interference cancellation is used to counter the problem of MAI in the uplink. Application of SCCC coding and interference cancellation has improved performance of the system significantly even in the fully loaded case. Downlink performance is also shown for comparison, both with SCCC and turbo code, indicating some relative merits of SCCC in achieving very low error rates with relative absence of error floor behavior at the typical BER rate of interest for wireless data applications.","PeriodicalId":136537,"journal":{"name":"2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277)","volume":"65 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":"124936337","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":"Blind adaptive space-time multiuser detection for fading multipath channels","authors":"D. Reynolds, Xiaodong Wang, H. Poor","doi":"10.1109/MILCOM.2001.986003","DOIUrl":"https://doi.org/10.1109/MILCOM.2001.986003","url":null,"abstract":"In an effort to increase capacity and performance, many researchers have investigated space-time signal processing techniques for cellular systems. Generally speaking, these techniques involve the use of multiple transmit or receive antennas in conjunction with some form of coding to exploit spatial diversity. Very little work, however, has been attempted on practical (simple, blind, adaptive) receivers employing multiuser detection and multiple antennas at both the transmitter and receiver. In this paper, we develop a blind adaptive implementation of a space-time receiver for CDMA in fading multipath channels. Specifically, we consider a system with two transmit and two receive antennas, though the work can be easily be extended to other configurations. We employ the Alamouti space-time block code at the transmitter since it has previously been adopted for a number of 3G WCDMA standards. We investigate the performance of this receiver via simulation.","PeriodicalId":136537,"journal":{"name":"2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277)","volume":"20 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":"121522339","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 private network issues using satellite based networks","authors":"E. Olechna, P. Feighery, S. Hryckiewicz","doi":"10.1109/MILCOM.2001.985945","DOIUrl":"https://doi.org/10.1109/MILCOM.2001.985945","url":null,"abstract":"A number of commercial wideband satellite systems have been proposed to offer Internet access services and some satellite systems have already begun offering such services (see http://www.time.com/time/digital/reports/broadband/wireless.html, 2000). A unique characteristic of these satellite systems, as compared to terrestrial Internet access systems, is their use of performance enhancing proxies (PEPs) to improve the performance of Internet protocols over the satellite link (see Border, J. et al, RFC 3135, 2001). PEPs break the end-to-end semantics of Internet connections and do not readily support the use of end-to-end IP layer security (IPsec) algorithms that are used for virtual private networks (VPN). This paper describes the challenges and potential techniques for deploying a VPN over a commercial satellite-based network. Results from experimentation performed at the MITRE facility are also presented to demonstrate the performance tradeoffs of candidate VPN design alternatives.","PeriodicalId":136537,"journal":{"name":"2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277)","volume":"179 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":"134285064","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":"TCP in networks with abrupt delay variations and random loss","authors":"A. Abouzeid, S. Roy","doi":"10.1109/MILCOM.2001.985929","DOIUrl":"https://doi.org/10.1109/MILCOM.2001.985929","url":null,"abstract":"This paper provides a preliminary investigation of the effect of abrupt round-trip variations on the performance of different versions of TCP. It is shown that end-to-end goodput of a bulk TCP transfer can be severely limited by variations in RTT primarily due to the non-adaptiveness of TCP's timeout estimation and fast recovery thresholds. The paper proposes a model for evaluating the performance of TCP in environments with abrupt RTT changes and random packet loss and outlines possible future TCP improvements.","PeriodicalId":136537,"journal":{"name":"2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277)","volume":"80 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":"130297369","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}