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MILCOM 1999. IEEE Military Communications. Conference Proceedings (Cat. No.99CH36341)最新文献

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Demand re-registration for PCS database restoration 恢复PCS数据库需要重新注册
MILCOM 1999. IEEE Military Communications. Conference Proceedings (Cat. No.99CH36341) Pub Date : 1999-12-01 DOI: 10.1109/MILCOM.1999.821331
Zygmunt J. Haas, Yi-Bing Lin
{"title":"Demand re-registration for PCS database restoration","authors":"Zygmunt J. Haas, Yi-Bing Lin","doi":"10.1109/MILCOM.1999.821331","DOIUrl":"https://doi.org/10.1109/MILCOM.1999.821331","url":null,"abstract":"In this paper, we propose a new visitor location register (VLR) failure recovery scheme called demand re-registration for personal communications services (PCS). In this scheme, the VLR broadcasts a re-registration request to all mobile stations (MSs) after the VLR failure. When an MS receives the re-registration request, it sends a registration message to the VLR to recover the location record. We study the performance of demand re-registration by investigating how effectively the re-registration can recover the location record for an MS before the first MS call termination occurs. Our results indicate that demand re-registration can effectively recover from VLR failure.","PeriodicalId":334957,"journal":{"name":"MILCOM 1999. IEEE Military Communications. Conference Proceedings (Cat. No.99CH36341)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121481318","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
An analysis on the effect of the number of phases in multipath fading DS-CDMA signature sequences 多径衰落DS-CDMA信号序列中相位数的影响分析
MILCOM 1999. IEEE Military Communications. Conference Proceedings (Cat. No.99CH36341) Pub Date : 1999-10-31 DOI: 10.1109/MILCOM.1999.822669
S. Park, I. Song, Seokho Yoon, Jooshik Lee, Seong-Ro Lee
{"title":"An analysis on the effect of the number of phases in multipath fading DS-CDMA signature sequences","authors":"S. Park, I. Song, Seokho Yoon, Jooshik Lee, Seong-Ro Lee","doi":"10.1109/MILCOM.1999.822669","DOIUrl":"https://doi.org/10.1109/MILCOM.1999.822669","url":null,"abstract":"Direct sequence code division multiple access (DS-CDMA) communication systems using random polyphase sequences with coherent reception in multipath fading channels are considered. By examining the asymptotic characteristics of the multiple access interference and multipath interference, we show that the DS-CDMA system performance with random m/sub p/-phase sequences of m/sub p//spl ges/3 is better than that with random binary sequences in multipath fading environment.","PeriodicalId":334957,"journal":{"name":"MILCOM 1999. IEEE Military Communications. Conference Proceedings (Cat. No.99CH36341)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121803661","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
Automatic classification of analogue modulation signals by statistical parameters 模拟调制信号的统计参数自动分类
MILCOM 1999. IEEE Military Communications. Conference Proceedings (Cat. No.99CH36341) Pub Date : 1999-10-31 DOI: 10.1109/MILCOM.1999.822672
S. Taira, E. Murakami
{"title":"Automatic classification of analogue modulation signals by statistical parameters","authors":"S. Taira, E. Murakami","doi":"10.1109/MILCOM.1999.822672","DOIUrl":"https://doi.org/10.1109/MILCOM.1999.822672","url":null,"abstract":"Automatic classification of modulation signals plays an important role in communication applications such as an intelligent demodulator, interference identification and monitoring, so many investigations have been carried out in the past. A new automatic classification procedure of analogue modulation signals including phase continuous FSK signals is proposed. For the discrimination between frequency modulation signals and amplitude modulation signals and the classification among amplitude modulation signals, the statistical parameters of the signal envelope are used. For the classification among frequency modulation signals, the compactness of the instantaneous frequency distribution is used. Good classification possibility have been ascertained by the computer simulations when the SNR/spl ges/10 dB. The discrimination between analogue modulation signals and digital modulation signals based on the block processing is also discussed.","PeriodicalId":334957,"journal":{"name":"MILCOM 1999. IEEE Military Communications. Conference Proceedings (Cat. No.99CH36341)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116945189","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: 35
Multifunctional on-the-move survivable adaptive integrated communications (MOSAIC) advanced technology demonstration (ATD) 多功能移动生存自适应集成通信(MOSAIC)先进技术演示(ATD)
MILCOM 1999. IEEE Military Communications. Conference Proceedings (Cat. No.99CH36341) Pub Date : 1999-10-31 DOI: 10.1109/MILCOM.1999.822731
G. Blohm, L. Dworkin, W. Polites
{"title":"Multifunctional on-the-move survivable adaptive integrated communications (MOSAIC) advanced technology demonstration (ATD)","authors":"G. Blohm, L. Dworkin, W. Polites","doi":"10.1109/MILCOM.1999.822731","DOIUrl":"https://doi.org/10.1109/MILCOM.1999.822731","url":null,"abstract":"This paper describes a proposed multifunctional on-the-move survivable adaptive integrated communications (MOSAIC) advanced technology demonstration (ATD). The MOSAIC ATD focuses on integrating a highly adaptive communications infrastructure that supports the seamless flow of multimedia services across terrestrial and space based platforms. A wireless communications architecture that supports multi-media applications, quality of service (QoS) for streamed services, ad-hoc networking, bandwidth management and traffic scaling is involved. The MOSAIC ATD demonstrates that this networked communication system architecture can provide a commander with the ability to disperse command post elements (e.g. vehicles) quickly, support dispersed operations and provide a mobile reach-back capability linked through the airborne communications node (ACN) or space based platforms. The program is proposed to begin in 2000 and will extend to 2004.","PeriodicalId":334957,"journal":{"name":"MILCOM 1999. IEEE Military Communications. Conference Proceedings (Cat. No.99CH36341)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124869650","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
A comparison between the impact of some signals on an MSK receiver 一些信号对MSK接收机影响的比较
MILCOM 1999. IEEE Military Communications. Conference Proceedings (Cat. No.99CH36341) Pub Date : 1999-10-31 DOI: 10.1109/MILCOM.1999.822641
K. Wiklundh
{"title":"A comparison between the impact of some signals on an MSK receiver","authors":"K. Wiklundh","doi":"10.1109/MILCOM.1999.822641","DOIUrl":"https://doi.org/10.1109/MILCOM.1999.822641","url":null,"abstract":"Transmitters and electrical equipment co-located to a radio system can, due to its radiated electromagnetic interference, cause serious degradation on the system performance. In real system design, when predicting the loss of performance, with a set of interferences of various signal types, there is a need of simple approximations that simultaneously describe the interferences in a proper manner. The focus of this paper is to show how different interfering signals will affect the performance of a radio system. Furthermore, the consequences of approximating these interference signals as additive white Gaussian noise are investigated.","PeriodicalId":334957,"journal":{"name":"MILCOM 1999. IEEE Military Communications. Conference Proceedings (Cat. No.99CH36341)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123225431","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: 11
On a low bit rate speech coder using multi-level amplitude algebraic method 基于多级幅度代数方法的低比特率语音编码器
MILCOM 1999. IEEE Military Communications. Conference Proceedings (Cat. No.99CH36341) Pub Date : 1999-10-31 DOI: 10.1109/MILCOM.1999.821442
Chan-Joong Jung, Young-Ho Park, M. Bae
{"title":"On a low bit rate speech coder using multi-level amplitude algebraic method","authors":"Chan-Joong Jung, Young-Ho Park, M. Bae","doi":"10.1109/MILCOM.1999.821442","DOIUrl":"https://doi.org/10.1109/MILCOM.1999.821442","url":null,"abstract":"This paper analyzes the dynamic sparse algebraic codebook used to model a residual signal for ACELP. It proposes an improved algebraic codebook structure with a new searching process. The proposed algorithm improves the disadvantage of an algebraic codebook without computation increment. First, this paper makes it possible to select various pulse amplitudes differently from the conventional method which looks up the sign bit simply. In addition, two pulses are selected on the same track and the delay of the LP is minimized at the transient period when the LSF interpolation is performed using a transient detector from unvoiced to voiced speech without additional computation. For telephone line speech quality, a 5.6 kbps speech coder using the proposed algorithm was equivalent to the 6.3 kbps MP-MLQ from the viewpoint of subjective speech quality. For objective quality, however, the degradation was MNRU Q=15 dB compared to MP-MLQ where MNRU Q=15 dB.","PeriodicalId":334957,"journal":{"name":"MILCOM 1999. IEEE Military Communications. Conference Proceedings (Cat. No.99CH36341)","volume":"150 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123237407","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
Using semicontrollable interfaces in testing army communications protocols: application to MIL-STD 188-220B 在测试军队通信协议中使用半导体可控制接口:MIL-STD 188-220B的应用
MILCOM 1999. IEEE Military Communications. Conference Proceedings (Cat. No.99CH36341) Pub Date : 1999-10-31 DOI: 10.1109/MILCOM.1999.821357
M. Fecko, M. U. Uyar, P. Amer, A. Sethi
{"title":"Using semicontrollable interfaces in testing army communications protocols: application to MIL-STD 188-220B","authors":"M. Fecko, M. U. Uyar, P. Amer, A. Sethi","doi":"10.1109/MILCOM.1999.821357","DOIUrl":"https://doi.org/10.1109/MILCOM.1999.821357","url":null,"abstract":"Testing army communications protocols is considered for a testing environment where the tester has limited degrees of controllability on applying inputs to an implementation under test. The inputs fall into three categories: directly controllable, semicontrollable, or uncontrollable. A graph conversion algorithm is presented to utilize the semicontrollable inputs, thereby increasing the number of testable transitions. The research was motivated while generating tests for MIL-STD 188-220B. The number of testable transitions for 188-220B Class A-Type 1 Datalink Service module is approximately 200 without utilizing semicontrollable inputs. These 200 account for only 30% of the transitions defined in the protocol specification. The presented methodology makes it possible to increase the number of testable transitions to over 700. Combined with our previous work on testing protocols with timing constraints, the methodology allows us to generate tests free of interruptions due to timeouts, and covering more than 95% of the defined transitions in 188-220B's Type 1 Datalink Layer.","PeriodicalId":334957,"journal":{"name":"MILCOM 1999. IEEE Military Communications. Conference Proceedings (Cat. No.99CH36341)","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123673892","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
FEC coding with a rate adaptive spread spectrum OFDM system 用速率自适应扩频OFDM系统进行FEC编码
MILCOM 1999. IEEE Military Communications. Conference Proceedings (Cat. No.99CH36341) Pub Date : 1999-10-31 DOI: 10.1109/MILCOM.1999.821369
Zhong Ye, G. Saulnier, D. Lee, M. Medley
{"title":"FEC coding with a rate adaptive spread spectrum OFDM system","authors":"Zhong Ye, G. Saulnier, D. Lee, M. Medley","doi":"10.1109/MILCOM.1999.821369","DOIUrl":"https://doi.org/10.1109/MILCOM.1999.821369","url":null,"abstract":"This paper investigates the use of a spread spectrum OFDM modulation to provide a variable rate communications link that is tolerant of multipath fading. The system adaptively varies the amount of spreading in response to changing channel conditions in an attempt to optimize throughput while maintaining acceptable error rate performance. System performance results for AWGN and Rayleigh fading channels, both frequency selective and frequency non-selective, show that a desired BER performance can be maintained. A trade-off analysis between forward error correction (FEC) coding and spreading for a fixed bandwidth expansion factor is performed. For convolutional coding the results show that a low-rate code provides better performance while, for a Reed-Solomon code, a coding rate of approximately 1/2 is best.","PeriodicalId":334957,"journal":{"name":"MILCOM 1999. IEEE Military Communications. Conference Proceedings (Cat. No.99CH36341)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116518649","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: 3
Performance analysis of integrated space-time receiver with combined full-and reduced-complexity for DS/CDMA systems DS/CDMA系统全复杂度与降复杂度组合时空接收机性能分析
MILCOM 1999. IEEE Military Communications. Conference Proceedings (Cat. No.99CH36341) Pub Date : 1999-10-31 DOI: 10.1109/MILCOM.1999.822717
V. Pham, T. B. Vu
{"title":"Performance analysis of integrated space-time receiver with combined full-and reduced-complexity for DS/CDMA systems","authors":"V. Pham, T. B. Vu","doi":"10.1109/MILCOM.1999.822717","DOIUrl":"https://doi.org/10.1109/MILCOM.1999.822717","url":null,"abstract":"An integrated space-time receiver is proposed to suppress co-channel interference and increase the capacity for DS/CDMA systems. The receiver employs an array of antennas, which allows it to exploit the spatial domain information in the received signals, and at the same time, each antenna incorporates an adaptive filter with varying complexity and operated in a manner similar to an adaptive equaliser, to further suppress interference in the temporal domain. Numerical results are presented using the minimum mean-squared error (MMSE) criterion, showing that the receiver offers significant performance improvement relative to corresponding time-domain-only counterpart in terms of the near-far resistance and capacity in multipath channels. A comparison of the MSE between simulation results using the RLS algorithm and analytical results using optimum Wiener solution is also presented.","PeriodicalId":334957,"journal":{"name":"MILCOM 1999. IEEE Military Communications. Conference Proceedings (Cat. No.99CH36341)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122508136","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
Directory-enabled network management framework for battlefield networks 支持目录的战场网络管理框架
MILCOM 1999. IEEE Military Communications. Conference Proceedings (Cat. No.99CH36341) Pub Date : 1999-10-31 DOI: 10.1109/MILCOM.1999.821387
B. Cheng, Chien-Chung Shen, Tsong-Ho Wu, D. Hsing
{"title":"Directory-enabled network management framework for battlefield networks","authors":"B. Cheng, Chien-Chung Shen, Tsong-Ho Wu, D. Hsing","doi":"10.1109/MILCOM.1999.821387","DOIUrl":"https://doi.org/10.1109/MILCOM.1999.821387","url":null,"abstract":"While the emerging CORBA technology holds many desirable characteristics of a distributed object system it is equally attractive as a platform for integrating different systems that will co-exist in the battlefield networks. In this paper, we investigate a framework that integrates emerging Java and directory service technologies with the CORBA based network management system to provide directory service enabled network management (DEMAN) capability. It is envisioned that this framework will enable DEMAN capability to be made available sooner (by using more matured technologies) and cover a wider portion of the battlefield network (by including Java-capable network elements).","PeriodicalId":334957,"journal":{"name":"MILCOM 1999. IEEE Military Communications. Conference Proceedings (Cat. No.99CH36341)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122655803","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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