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Proceedings of GLOBECOM '95最新文献

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Reducing jitter in PDH and ATM 减少PDH和ATM中的抖动
Proceedings of GLOBECOM '95 Pub Date : 1995-11-14 DOI: 10.1109/GLOCOM.1995.502616
Y. Matsuura
{"title":"Reducing jitter in PDH and ATM","authors":"Y. Matsuura","doi":"10.1109/GLOCOM.1995.502616","DOIUrl":"https://doi.org/10.1109/GLOCOM.1995.502616","url":null,"abstract":"Waiting time jitter has always been considered unavoidable in PDH stuff synchronization systems, and although several countermeasures have been suggested, they do not suppress it sufficiently. This paper proposes a better method for suppressing waiting time jitter by regenerating the stuff pulse at the receiver PLL and then by comparing the phase of the received stuff pulse with this regenerated stuff pulse. Moreover, this method is also effective in suppressing jitter in ATM which is the core technology of B-ISDN.","PeriodicalId":152724,"journal":{"name":"Proceedings of GLOBECOM '95","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115282171","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
Dynamic carrier allocation in a PRMA cellular network PRMA蜂窝网络中的动态载波分配
Proceedings of GLOBECOM '95 Pub Date : 1995-11-14 DOI: 10.1109/GLOCOM.1995.502584
F. D. Priscoli, G. Picciano, F. Sestini
{"title":"Dynamic carrier allocation in a PRMA cellular network","authors":"F. D. Priscoli, G. Picciano, F. Sestini","doi":"10.1109/GLOCOM.1995.502584","DOIUrl":"https://doi.org/10.1109/GLOCOM.1995.502584","url":null,"abstract":"This paper proposes a technique to allow the dynamic channel allocation in a PRMA personal communication network (PCN) in urban and indoor environments, where cells have small extension and may present large and sudden variations in the number of users. The proposed technique is also suitable for coping with variable-band services. The paper proposes original solutions to the following crucial problems: (i) the determination of a short-term parameter for assessing the link quality of a PRMA carrier in a microcellular environment; (ii) the determination of a procedure the base station can follow in order to perform a real-time estimation of the above-mentioned short-term parameter; (iii) the interworking between the DCA mechanism and the PRMA technique. Simulation results show a remarkable improvement in system performance, due to both the DCA and PRMA techniques.","PeriodicalId":152724,"journal":{"name":"Proceedings of GLOBECOM '95","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116690880","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
Measurements of microcellular propagation loss at 6 GHz and 2 GHz over non-line-of-sight paths in the city of Boston 波士顿市非视距路径上6 GHz和2 GHz微蜂窝传播损耗的测量
Proceedings of GLOBECOM '95 Pub Date : 1995-11-14 DOI: 10.1109/GLOCOM.1995.502030
A. J. Rustako, V. Erceg, R. S. Roman, T. M. Willis, J. Ling
{"title":"Measurements of microcellular propagation loss at 6 GHz and 2 GHz over non-line-of-sight paths in the city of Boston","authors":"A. J. Rustako, V. Erceg, R. S. Roman, T. M. Willis, J. Ling","doi":"10.1109/GLOCOM.1995.502030","DOIUrl":"https://doi.org/10.1109/GLOCOM.1995.502030","url":null,"abstract":"We describe a series of microcellular radio propagation measurements at 2 GHz and 6 GHz from the city of Boston. The measurements were made during the winter season in both rectilinear and curvilinear areas of the city using a mobile receiver driven along all passable streets under normal traffic conditions. We define circular or diamond-shaped coverage areas (depending on the environment), where 90% of the measured area has a path loss (or attenuation) less than some specified level, and compare our measured path loss to that predicted by existing diamond-shaped rectilinear area models based on reflection and diffraction of the signal by the environment. Excellent agreement is found in the rectilinear areas. When compared to the rectilinear areas, the curvilinear areas show a larger coverage at lower path losses. This difference can be explained by the distribution of reflected and diffracted paths due to the particular street geometry of the curvilinear area.","PeriodicalId":152724,"journal":{"name":"Proceedings of GLOBECOM '95","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117060275","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
Strongest interferer adaptive single-user receivers in cellular radio environments 蜂窝无线电环境中最强干扰自适应单用户接收机
Proceedings of GLOBECOM '95 Pub Date : 1995-11-14 DOI: 10.1109/GLOCOM.1995.502656
B. Hagerman
{"title":"Strongest interferer adaptive single-user receivers in cellular radio environments","authors":"B. Hagerman","doi":"10.1109/GLOCOM.1995.502656","DOIUrl":"https://doi.org/10.1109/GLOCOM.1995.502656","url":null,"abstract":"In order to achieve a high capacity in cellular radio systems, modulation techniques and receivers have to be resistant to interference from other users. One method to achieve this involves interference adaptive receivers. In this paper we study the performance in symmetrical cellular systems of strongest interferer adaptive single-user receiver schemes. Performance evaluation demonstrates that by applying these receivers, the downlink cell average error probability is reduced. Consequently, the system capacity is enhanced compared to a system with conventional receivers. Results show that by using the adaptive receiver schemes a cluster size reduction of one step is achievable for hexagonal cell layouts. For base stations on a symmetrical grid, the performance gains in the downlink are shown to be almost independent of the cluster size and of the base station activities.","PeriodicalId":152724,"journal":{"name":"Proceedings of GLOBECOM '95","volume":"53 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121017313","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
Reduced-complexity Viterbi detector architectures for partial response signalling 部分响应信号的低复杂度Viterbi检测器架构
Proceedings of GLOBECOM '95 Pub Date : 1995-11-14 DOI: 10.1109/GLOCOM.1995.501991
G. Fettweis, R. Karabed, P. Siegel, H. Thapar
{"title":"Reduced-complexity Viterbi detector architectures for partial response signalling","authors":"G. Fettweis, R. Karabed, P. Siegel, H. Thapar","doi":"10.1109/GLOCOM.1995.501991","DOIUrl":"https://doi.org/10.1109/GLOCOM.1995.501991","url":null,"abstract":"The objective of this paper is to provide a general framework for optimizing the design of Viterbi detectors to achieve substantial reductions in hardware complexity as well as power consumption. Specific application of the framework to partial response systems is discussed. It is shown that the complexity of the add-compare-select unit for an N-state Viterbi detector is approximately N adders. Compared to conventional architectures, this represents a 50% savings for partial response signals of interest in magnetic storage.","PeriodicalId":152724,"journal":{"name":"Proceedings of GLOBECOM '95","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124929164","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: 22
A comparative performance study of excisers in spread spectrum communications 扩频通信中滤波器的性能比较研究
Proceedings of GLOBECOM '95 Pub Date : 1995-11-14 DOI: 10.1109/GLOCOM.1995.502579
M.V. Tazebay, A. Akansu
{"title":"A comparative performance study of excisers in spread spectrum communications","authors":"M.V. Tazebay, A. Akansu","doi":"10.1109/GLOCOM.1995.502579","DOIUrl":"https://doi.org/10.1109/GLOCOM.1995.502579","url":null,"abstract":"The comparative performance of a direct-sequence spread-spectrum (DSSS) receiver for different excisers is presented. The performance of the adaptive time-frequency (ATF) exciser is ranked along with fixed and optimal transform domain-based excisers. The smart ATF exciser is able to decide on the domain of processing. For the narrowband interference case, the ATF exciser employs an adaptive subband filter bank with the best transform basis. The bit error rate performance of DSSS receiver is simulated for ATF, DFT, DCT, optimal KLT, and fixed subband filter bank-based interference cancellers. It is shown that the smart ATF exciser significantly outperforms the others for the scenarios considered. The performance of ATF is very robust to the variations of the interference.","PeriodicalId":152724,"journal":{"name":"Proceedings of GLOBECOM '95","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124954702","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
RESIDING TIME DISTRIBUTIONS AND CALL HANDOVER TRAFFIC PERFORMANCE OF CELLS IN LEO IMOBILE SATELLITE 低轨移动卫星小区驻留时间分布和呼叫切换业务性能
Proceedings of GLOBECOM '95 Pub Date : 1995-11-14 DOI: 10.1109/GLOCOM.1995.501988
V. Vaughn
{"title":"RESIDING TIME DISTRIBUTIONS AND CALL HANDOVER TRAFFIC PERFORMANCE OF CELLS IN LEO IMOBILE SATELLITE","authors":"V. Vaughn","doi":"10.1109/GLOCOM.1995.501988","DOIUrl":"https://doi.org/10.1109/GLOCOM.1995.501988","url":null,"abstract":"","PeriodicalId":152724,"journal":{"name":"Proceedings of GLOBECOM '95","volume":"261 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123437935","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
A prototyped implementation of B-ISDN signalling at the network node interface 在网络节点接口上实现B-ISDN信令的原型
Proceedings of GLOBECOM '95 Pub Date : 1995-11-14 DOI: 10.1109/GLOCOM.1995.500361
J. Totzke, J. Welscher
{"title":"A prototyped implementation of B-ISDN signalling at the network node interface","authors":"J. Totzke, J. Welscher","doi":"10.1109/GLOCOM.1995.500361","DOIUrl":"https://doi.org/10.1109/GLOCOM.1995.500361","url":null,"abstract":"A simplified broadband-ISDN user part (B-ISUP) protocol for B-ISDN signalling at the network-node interface is introduced. This 'light-weight' B-ISUP protocol is suitable for small to medium-sized public broadband pilot networks and fulfills the short-term needs of the capabilities available for the network user. A possible network configuration is sketched as it is deployed in existing ATM pilot networks for permanent connections today. The concept is described and illustrated by typical message flows during call establishment and call tear-down. The impact of enhancing an existing prototyped ATM node capable of call processing and user network interface signalling in island configurations is examined. Finally, the simplified B-ISUP is compared with the private network node interface approach taken by the ATM Forum.","PeriodicalId":152724,"journal":{"name":"Proceedings of GLOBECOM '95","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123801377","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 practical method for achieving portable communications in the Internet context 一种在因特网环境中实现便携式通信的实用方法
Proceedings of GLOBECOM '95 Pub Date : 1995-11-14 DOI: 10.1109/GLOCOM.1995.502654
Xun Qu, I. Macleod, Hong Jiang
{"title":"A practical method for achieving portable communications in the Internet context","authors":"Xun Qu, I. Macleod, Hong Jiang","doi":"10.1109/GLOCOM.1995.502654","DOIUrl":"https://doi.org/10.1109/GLOCOM.1995.502654","url":null,"abstract":"In the realm of the Internet, each host has a unique identifying IP address. This address is location-sensitive, and conventional routing algorithms impose further restrictions on the portability and mobility of hosts. The aim of portable communications is to allow a movable host to communicate with others in the Internet wherever it moves to. To achieve this mode of communication, the portable host can be dynamically assigned a temporary IP address in a guest network. For other systems to locate and send IP datagrams to it, the portable host must be able to be referenced via an unchanging domain name. This paper explains the technical details of a practical method of achieving portable communications in the Internet. This method aims to provide maximum compatibility with current IP systems and to minimise the number of new services required.","PeriodicalId":152724,"journal":{"name":"Proceedings of GLOBECOM '95","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125562134","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
Revenue maximisation in ATM networks using the CLP capability and buffer priority management 利用CLP功能和缓冲优先级管理实现ATM网络的收益最大化
Proceedings of GLOBECOM '95 Pub Date : 1995-11-14 DOI: 10.1109/GLOCOM.1995.502025
S. Ramesh, C. Rosenberg, Anurag Kumar
{"title":"Revenue maximisation in ATM networks using the CLP capability and buffer priority management","authors":"S. Ramesh, C. Rosenberg, Anurag Kumar","doi":"10.1109/GLOCOM.1995.502025","DOIUrl":"https://doi.org/10.1109/GLOCOM.1995.502025","url":null,"abstract":"We are interested in the gain in network revenue that could be obtained by using the cell loss priority (CLP) capability \"optimally\" (i.e., choosing an appropriate operating point and performing the right dimensioning) within the network, as compared with the case in which the user is not offered the CLP capability. We study the performance of an ATM multiplexer with two traffic classes with different QoS requirements, each class arriving as a batch Markovian arrival process. The buffer priority schemes adopted are PBS (partial buffer sharing) and PBS+push-out. We first obtain the engineering trade-off curves, between CLP=0 and CLP=1 traffic. Then we formulate a revenue optimisation problem, in which the constraints are the engineering trade-off function, and a simple model of the variation of CLP=1 demand with its price.","PeriodicalId":152724,"journal":{"name":"Proceedings of GLOBECOM '95","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128320272","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: 12
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