MILCOM 2008 - 2008 IEEE Military Communications Conference最新文献_第7页

Joint IP Modem performance Using WGS 使用WGS的联合IP调制解调器性能

MILCOM 2008 - 2008 IEEE Military Communications Conference Pub Date : 2008-11-01 DOI: 10.1109/MILCOM.2008.4753104

B. Bennett, D. Hannan, D. Nolan, A. Lincoln, G. Kinal, J. Marshall, R. Gibbons

{"title":"Joint IP Modem performance Using WGS","authors":"B. Bennett, D. Hannan, D. Nolan, A. Lincoln, G. Kinal, J. Marshall, R. Gibbons","doi":"10.1109/MILCOM.2008.4753104","DOIUrl":"https://doi.org/10.1109/MILCOM.2008.4753104","url":null,"abstract":"The joint IP modem (JIPM) includes a forward (DVB-S2) and a return (DVB-RCS) link capability with a plethora of modulations and error correcting codes. In addition there is variable modulation and coding (VCM), adaptive modulation and coding (ACM) as well as uplink power control capability. The wideband global SATCOM (WGS) satellite has both Ka-band and X-band capability utilizing 39 active channels of up to 125 MHz bandwidth each. This paper addresses the JIPM hub/spoke topology at Ka-band and determines the constraints and requirements on the user VSAT terminals to support global broadcast service (GBS) traffic. Two GBS upgraded terminal capabilities will be considered: GBS receive-only using the JIPM DVB-S2 receive-only capability and two-way service using the JIPM with a GBS terminal capable of supporting two-way transmission on WGS. Achievable data rates using the upgraded GBS terminal will be presented. The forward link data rates are improved by the use of DVB-S2 over the current DVB-S waveform. The terminal capabilities at Ka-band are determined by a number of return link considerations: the throughput in the return direction, propagation conditions at the terminal, the actual WGS beam being used and number of 125 MHz channels being used in that beam, the sharing of the beam with other users, location of the terminal within the beam, the pointing/tracking error for the GBS terminal. This paper considers the next generation receive terminal (NGRT) as the targeted GBS terminal for upgrade for both 2-way operation and the JIPM addition.","PeriodicalId":434891,"journal":{"name":"MILCOM 2008 - 2008 IEEE Military Communications Conference","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127606817","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

Superconductor analog to digital converter for sigint applications 用于信号应用的超导体模数转换器

MILCOM 2008 - 2008 IEEE Military Communications Conference Pub Date : 2008-11-01 DOI: 10.1109/MILCOM.2008.4753449

A. Inamdar, D. Gupta, T. Filippov, I. Vernik, A. Talalaevski, A. Sahu, S. Sarwana, A. D. de Escobar, D. Van Vechten

{"title":"Superconductor analog to digital converter for sigint applications","authors":"A. Inamdar, D. Gupta, T. Filippov, I. Vernik, A. Talalaevski, A. Sahu, S. Sarwana, A. D. de Escobar, D. Van Vechten","doi":"10.1109/MILCOM.2008.4753449","DOIUrl":"https://doi.org/10.1109/MILCOM.2008.4753449","url":null,"abstract":"Superconductor analog-to-digital converters (ADC) offer high sensitivity and large dynamic range. We report recent advances in the low-pass phase-modulation-demodulation (PMD) oversampled analog-to-digital converter (ADC). The oversampled data from the PMD front-end are passed along with sampling clock to an on-chip digital filter. In the past, the maximum frequency of operation of such chips were limited by that of the digital decimation filter (DDF) to about 30 GHz. Recently, we have designed a chip that allows the PMD front-end to be clocked twice as fast as the DDF, resulting in sampling rates of 46.08 GHz and 29.44 GHz for chips with critical current densities of 4.5 and 1 kA/cm2 respectively. We have also designed a new PMD front-end, with a quarter-rate quantizer (QRQ) that allows 18-20 dB extension of dynamic range. We are also pursuing a subranging ADC design with two PMD front-ends connected with fluxon amplifier and subtractor circuitry that promises a dynamic range extension by 25-30 dB. We report signal-to-noise ratio and spur-free dynamic range measurement results for various ADC chips, and project performance for future improvements.","PeriodicalId":434891,"journal":{"name":"MILCOM 2008 - 2008 IEEE Military Communications Conference","volume":"339 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115672865","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: 8

Time reversal: Algorithms for M-ARY target classification using array signal processing 时间反转:使用阵列信号处理的M-ARY目标分类算法

MILCOM 2008 - 2008 IEEE Military Communications Conference Pub Date : 2008-11-01 DOI: 10.1109/MILCOM.2008.4753248

F. Foroozan, A. Asif

引用次数: 7

Demodulation performance of multiband UWB communication system with one RF and ADC module receiver 一个射频和ADC模块接收器的多波段UWB通信系统的解调性能

MILCOM 2008 - 2008 IEEE Military Communications Conference Pub Date : 2008-11-01 DOI: 10.1109/MILCOM.2008.4753546

S. Zakhem, J. Liu, A. MacDonald

引用次数: 1

A common lexicon and design issues surrounding cognitive radio networks operating in the presence of jamming 一个共同的词汇和设计问题，围绕认知无线电网络在存在干扰的情况下运作

MILCOM 2008 - 2008 IEEE Military Communications Conference Pub Date : 2008-11-01 DOI: 10.1109/MILCOM.2008.4753631

J. Burbank, A. R. Hammons, S.D. Jones

引用次数: 25

CORPS: Event-driven mobility model for first responders in incident scene 事故现场第一响应者的事件驱动移动模型

MILCOM 2008 - 2008 IEEE Military Communications Conference Pub Date : 2008-11-01 DOI: 10.1109/MILCOM.2008.4753143

Ying Huang, Wenbo He, K. Nahrstedt, W.C. Lee

引用次数: 22

An approach to topology management in directional networks 一种定向网络拓扑管理方法

MILCOM 2008 - 2008 IEEE Military Communications Conference Pub Date : 2008-11-01 DOI: 10.1109/MILCOM.2008.4753082

M. Duke, G. Pei

{"title":"An approach to topology management in directional networks","authors":"M. Duke, G. Pei","doi":"10.1109/MILCOM.2008.4753082","DOIUrl":"https://doi.org/10.1109/MILCOM.2008.4753082","url":null,"abstract":"Narrow-beam directional antennas can provide enormous gains in data rate, range, power expenditure, and spatial re-use. When ranges extend to hundreds of kilometers, there can be thousands of nodes in communications range. Since directional networks tend to incur an overhead cost per link, some process must select the potential neighbors to which a node actually links and are therefore reported as neighbors to the routing protocol. This process is known as topology management. If the purpose is to reduce the number of links, the key question is what criteria are used to select them. In this paper, we propose a matrix model that allows network managers to define pairwise standards for throughput, delay, and path redundancy. In the context of a time division multiple access system, our proposed objective is to meet the specified standards with the minimum number of links and time slot utilization, in order to meet second-order design objectives. If these standards matrices are periodically (but rarely) distributed, the network can work towards a common set of precisely defined performance objectives. We provide an example of an algorithm that can exploit this information to rapidly and scalably converge on a solution with minimal additional messaging overhead.","PeriodicalId":434891,"journal":{"name":"MILCOM 2008 - 2008 IEEE Military Communications Conference","volume":"153 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114375933","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 novel service-oriented routing algorithm for wireless mesh network 一种面向服务的无线网状网络路由算法

MILCOM 2008 - 2008 IEEE Military Communications Conference Pub Date : 2008-11-01 DOI: 10.1109/MILCOM.2008.4753322

H. Lugo-Cordero, K. Lu, D. Rodríguez, S. Kota

{"title":"A novel service-oriented routing algorithm for wireless mesh network","authors":"H. Lugo-Cordero, K. Lu, D. Rodríguez, S. Kota","doi":"10.1109/MILCOM.2008.4753322","DOIUrl":"https://doi.org/10.1109/MILCOM.2008.4753322","url":null,"abstract":"Wireless mesh network (WMN) is a promising technology that can provide cost-effective solutions to cover a rather large area. Despite this important feature, the future generation of WMNs needs to support more and more applications, such as voice over internet protocol (VoIP) and multimedia content distribution. To efficiently support these diverse demands and to effectively utilize the wireless network, service-oriented network layer design has been proposed recently. A key idea of such a service-oriented design is that a user only needs to specify the service to the network, instead of the destination address in a traditional manner. In this work, we present a simple solution, namely, the service-oriented routing algorithm (SORA), to enable service orientation in WMNs. The proposed scheme works in a similar manner as the Domain Name System (DNS). Specifically, SORA associates IP addresses to services just like the DNS associates IP addresses to domain names. To demonstrate the viability of the proposed scheme, we have developed simple but efficient programs that are running in Commercial off-the-shelf (COTS) devices, in particular, workstations and wireless mesh routers. Our experiments show that the proposed algorithm can efficiently provide distributed services in wireless mesh networks.","PeriodicalId":434891,"journal":{"name":"MILCOM 2008 - 2008 IEEE Military Communications Conference","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114624201","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

Distributed mobile sink support in wireless sensor networks 无线传感器网络中的分布式移动sink支持

MILCOM 2008 - 2008 IEEE Military Communications Conference Pub Date : 2008-11-01 DOI: 10.1109/MILCOM.2008.4753649

Rui Zhang, M. Lee, Seong-Soon Joo

引用次数: 8

A generalized CPM-SC-FDMA transmission scheme suitable for future aeronautical telemetry 一种适用于未来航空遥测的通用CPM-SC-FDMA传输方案

MILCOM 2008 - 2008 IEEE Military Communications Conference Pub Date : 2008-11-01 DOI: 10.1109/MILCOM.2008.4753272

M. Wylie-Green, E. Perrins

引用次数: 6