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ICC '98. 1998 IEEE International Conference on Communications. Conference Record. Affiliated with SUPERCOMM'98 (Cat. No.98CH36220)最新文献

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Fade statistics in microcellular mobile radio channels with shadowing 带阴影的微蜂窝移动无线电信道的衰落统计
ICC '98. 1998 IEEE International Conference on Communications. Conference Record. Affiliated with SUPERCOMM'98 (Cat. No.98CH36220) Pub Date : 1998-06-07 DOI: 10.1109/ICC.1998.683109
T. Tjhung, C. C. Chai
{"title":"Fade statistics in microcellular mobile radio channels with shadowing","authors":"T. Tjhung, C. C. Chai","doi":"10.1109/ICC.1998.683109","DOIUrl":"https://doi.org/10.1109/ICC.1998.683109","url":null,"abstract":"New expressions for the average level crossing rate (LCR) and time fade duration (TFD) of the signal envelope in microcellular mobile radio channels, characterized by Rician fading and lognormal shadowing, the so-called Rice-lognormal (RLN) channel, and by Nakagami fading and lognormal shadowing, so-called Nakagami-lognormal (RLN) channel, are presented. New LCR and TFD curves as functions of the Rice K factor, the Nakagami m factor and shadowing spread /spl sigma//sub s/ are presented and discussed. The LCR and TFD expressions for the RLN channel reduce to the published formulae for the Rayleigh-lognormal (Suzuki, 1982) channel as a special case, and for very large Rice K factor, approach those formulae obtained by Loo (1985).","PeriodicalId":218354,"journal":{"name":"ICC '98. 1998 IEEE International Conference on Communications. Conference Record. Affiliated with SUPERCOMM'98 (Cat. No.98CH36220)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116865794","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: 5
Optical CDMA with overlapping PPM 具有重叠PPM的光学CDMA
ICC '98. 1998 IEEE International Conference on Communications. Conference Record. Affiliated with SUPERCOMM'98 (Cat. No.98CH36220) Pub Date : 1998-06-07 DOI: 10.1109/ICC.1998.683030
H. Shalaby
{"title":"Optical CDMA with overlapping PPM","authors":"H. Shalaby","doi":"10.1109/ICC.1998.683030","DOIUrl":"https://doi.org/10.1109/ICC.1998.683030","url":null,"abstract":"Direct-detection optical code-division multiple access (CDMA) systems employing overlapping pulse-position modulation (OPPM) schemes are proposed. A union upper bound on the bit error rate is derived taking into account the effect of both multiple-user interference and receiver shot noise. The photodiodes' dark currents are neglected in order to have some insights on the problem. Performance characteristics are then compared to the traditional on off keying (OOK) and pulse-position modulation (PPM) schemes. It is shown that under the constraints of both throughput and chip time, the OPPM system outperforms both traditional systems.","PeriodicalId":218354,"journal":{"name":"ICC '98. 1998 IEEE International Conference on Communications. Conference Record. Affiliated with SUPERCOMM'98 (Cat. No.98CH36220)","volume":"689 16","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120882062","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
Capacity of M-ary multitrack RLL codes for storage channels 用于存储信道的多道RLL码容量
ICC '98. 1998 IEEE International Conference on Communications. Conference Record. Affiliated with SUPERCOMM'98 (Cat. No.98CH36220) Pub Date : 1998-06-07 DOI: 10.1109/ICC.1998.685155
Jaejin Lee
{"title":"Capacity of M-ary multitrack RLL codes for storage channels","authors":"Jaejin Lee","doi":"10.1109/ICC.1998.685155","DOIUrl":"https://doi.org/10.1109/ICC.1998.685155","url":null,"abstract":"This paper introduces M-ary multitrack runlength limited (RLL) (d,k) constrained codes for data storage systems. We calculate the capacities and densities of the codes. We have derived a general form of the state transition matrix for M-ary n-track (d,k) codes. Using the largest eigenvalue of the transition matrix, we calculate the capacity and density. The capacity approaches to the limit with a small k constraint compared to single-track codes. One can design some practical M-ary multitrack codes applying the same algorithms for single-track codes.","PeriodicalId":218354,"journal":{"name":"ICC '98. 1998 IEEE International Conference on Communications. Conference Record. Affiliated with SUPERCOMM'98 (Cat. No.98CH36220)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127372142","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
Improving TCP performance in mobile computing environments 提高TCP在移动计算环境中的性能
ICC '98. 1998 IEEE International Conference on Communications. Conference Record. Affiliated with SUPERCOMM'98 (Cat. No.98CH36220) Pub Date : 1998-06-07 DOI: 10.1109/ICC.1998.682952
M. Stangel, V. Bharghavan
{"title":"Improving TCP performance in mobile computing environments","authors":"M. Stangel, V. Bharghavan","doi":"10.1109/ICC.1998.682952","DOIUrl":"https://doi.org/10.1109/ICC.1998.682952","url":null,"abstract":"In this paper we examine several aspects of performance and connection management during handoffs and interface switching in mobile computing environments. We demonstrate the insufficiency of network layer mobility protocols to preserve high-performance operation of reliable transport protocols such as TCP under certain circumstances. We also introduce a mobility-aware transport, Mobile TCP, that maintains robust operation despite lossy mobile activity. Experimental results are presented and discussed.","PeriodicalId":218354,"journal":{"name":"ICC '98. 1998 IEEE International Conference on Communications. Conference Record. Affiliated with SUPERCOMM'98 (Cat. No.98CH36220)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130140999","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: 21
The dynamic packet reservation multiple access scheme for multimedia traffic 多媒体流量的动态分组保留多址方案
ICC '98. 1998 IEEE International Conference on Communications. Conference Record. Affiliated with SUPERCOMM'98 (Cat. No.98CH36220) Pub Date : 1998-06-07 DOI: 10.1109/ICC.1998.683108
Z. Haas, D. A. Dyson
{"title":"The dynamic packet reservation multiple access scheme for multimedia traffic","authors":"Z. Haas, D. A. Dyson","doi":"10.1109/ICC.1998.683108","DOIUrl":"https://doi.org/10.1109/ICC.1998.683108","url":null,"abstract":"The performance of dynamic packet reservation multiple access (DPRMA), which was introduced in previous publications, is investigated. In particular, we show here how the DPRMA scheme integrates three different traffic types: voice, video, and data, through a single access control mechanism that permits users to specify their immediate bandwidth requirements. The primary feature of the DPRMA is the dynamic matching of the traffic source generation rates with the assigned fraction of the channel capacity. This is accomplished by a multiple-threshold-driven control algorithm with hysteresis that regulates the actual amount of channel capacity assigned to users. We discuss how the multiple thresholds are selected for the three traffic types and demonstrate the improvement of the DPRMA mechanism in increased throughput and reduced number of collisions.","PeriodicalId":218354,"journal":{"name":"ICC '98. 1998 IEEE International Conference on Communications. Conference Record. Affiliated with SUPERCOMM'98 (Cat. No.98CH36220)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130539240","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: 20
Blind channel equalization and data detection for OFDM transmissions on frequency-selective channels 频率选择信道上OFDM传输的盲信道均衡和数据检测
ICC '98. 1998 IEEE International Conference on Communications. Conference Record. Affiliated with SUPERCOMM'98 (Cat. No.98CH36220) Pub Date : 1998-06-07 DOI: 10.1109/ICC.1998.682863
M. Luise, R. Reggiannini, G. Vitetta
{"title":"Blind channel equalization and data detection for OFDM transmissions on frequency-selective channels","authors":"M. Luise, R. Reggiannini, G. Vitetta","doi":"10.1109/ICC.1998.682863","DOIUrl":"https://doi.org/10.1109/ICC.1998.682863","url":null,"abstract":"A novel detection algorithm for orthogonal frequency division multiplexing (OFDM) signals transmitted over frequency-selective channels is introduced and analyzed. Simulation results show that the proposed detection strategy, implemented via a standard Viterbi algorithm, provides improved performance over differential detection with a moderate increase in receiver complexity, and without requiring the periodic transmission of a training block.","PeriodicalId":218354,"journal":{"name":"ICC '98. 1998 IEEE International Conference on Communications. Conference Record. Affiliated with SUPERCOMM'98 (Cat. No.98CH36220)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130613124","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
Minimum energy mobile wireless networks 最小能量移动无线网络
ICC '98. 1998 IEEE International Conference on Communications. Conference Record. Affiliated with SUPERCOMM'98 (Cat. No.98CH36220) Pub Date : 1998-06-07 DOI: 10.1109/ICC.1998.683107
V. Rodoplu, T. Meng
{"title":"Minimum energy mobile wireless networks","authors":"V. Rodoplu, T. Meng","doi":"10.1109/ICC.1998.683107","DOIUrl":"https://doi.org/10.1109/ICC.1998.683107","url":null,"abstract":"We describe a distributed position-based network protocol optimized for minimum energy consumption in mobile wireless networks that support peer-to-peer communications. Given any number of randomly deployed nodes over an area, we show that a simple local optimization scheme executed at each node guarantees strong connectivity of the entire network and attains the global minimum energy solution for the stationary case. Due to its localized nature, this protocol proves to be self-reconfiguring and stays close to the minimum energy solution when applied to the case of mobile nodes. Our simulations verify its performance.","PeriodicalId":218354,"journal":{"name":"ICC '98. 1998 IEEE International Conference on Communications. Conference Record. Affiliated with SUPERCOMM'98 (Cat. No.98CH36220)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130425539","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: 2137
Issues of congestion control and notification schemes in ATM networks and proposal of EPRCAM ATM网络中拥塞控制和通知机制的问题及EPRCAM的建议
ICC '98. 1998 IEEE International Conference on Communications. Conference Record. Affiliated with SUPERCOMM'98 (Cat. No.98CH36220) Pub Date : 1998-06-07 DOI: 10.1109/ICC.1998.682690
M. Hashmani, K. Kawahara, H. Sunahara, Y. Oie
{"title":"Issues of congestion control and notification schemes in ATM networks and proposal of EPRCAM","authors":"M. Hashmani, K. Kawahara, H. Sunahara, Y. Oie","doi":"10.1109/ICC.1998.682690","DOIUrl":"https://doi.org/10.1109/ICC.1998.682690","url":null,"abstract":"In long haul networks, delay in congestion notification can cause an extended period of congestion which may in turn result in cell loss, and poor utilization of the network. In this regard we investigate various congestion notification strategies and show our results in this paper. Moreover, we identify deficiencies and problems associated with the enhanced proportional rate control algorithm (EPRCA) which is one of the explicit rate control algorithms recommended by the ATM Forum. These deficiencies cause unfairness in bandwidth utilization among contending sources. We suggest modifications in EPRCA and call it the modified enhanced proportional rate control algorithm (EPRCAM). We argue that EPRCAM will lead to better link utilization and fair bandwidth allocation between sources. In our simulation model, EPRCAM results in as high as a 97.5% link utilization without cell loss.","PeriodicalId":218354,"journal":{"name":"ICC '98. 1998 IEEE International Conference on Communications. Conference Record. Affiliated with SUPERCOMM'98 (Cat. No.98CH36220)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131730619","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
Architecture and implementation of radio access protocols in wireless ATM networks 无线ATM网络中无线接入协议的体系结构与实现
ICC '98. 1998 IEEE International Conference on Communications. Conference Record. Affiliated with SUPERCOMM'98 (Cat. No.98CH36220) Pub Date : 1998-06-07 DOI: 10.1109/ICC.1998.685177
C. Johnston, P. Narasimhan, J. Kokudo, M. Ohki
{"title":"Architecture and implementation of radio access protocols in wireless ATM networks","authors":"C. Johnston, P. Narasimhan, J. Kokudo, M. Ohki","doi":"10.1109/ICC.1998.685177","DOIUrl":"https://doi.org/10.1109/ICC.1998.685177","url":null,"abstract":"This paper presents an updated perspective on the design and implementation of radio access protocols in wireless ATM networks. The protocol architecture of a wireless ATM network is outlined with particular focus on the radio access subsystem consisting of radio physical level (PHY), medium access control (MAC), data link control (DLC) and wireless control. Each of these protocol layers in wireless ATM is described and preliminary performance/experimental results are given where applicable. Hardware and software implementation details are given for the \"WATMnet2.0\" 25 Mbps/5 GHz WATM radio network interface card currently under development, and associated mobile terminal and base station architectures are discussed.","PeriodicalId":218354,"journal":{"name":"ICC '98. 1998 IEEE International Conference on Communications. Conference Record. Affiliated with SUPERCOMM'98 (Cat. No.98CH36220)","volume":"238 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123397327","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
An automated stock price delivery system based on the GSM short message service 基于GSM短消息业务的股票价格自动传递系统
ICC '98. 1998 IEEE International Conference on Communications. Conference Record. Affiliated with SUPERCOMM'98 (Cat. No.98CH36220) Pub Date : 1998-06-07 DOI: 10.1109/ICC.1998.683092
D. Friel, L. Kilmartin
{"title":"An automated stock price delivery system based on the GSM short message service","authors":"D. Friel, L. Kilmartin","doi":"10.1109/ICC.1998.683092","DOIUrl":"https://doi.org/10.1109/ICC.1998.683092","url":null,"abstract":"The development of value added services based upon the GSM standard is becoming increasingly important to both network operators and the subscriber's to such networks. This paper outlines a system capable of delivering \"real time\" stock price information (e.g. price, volume etc.) from Internet based stock price servers to a variety of subscriber types. The main delivery mechanism for this information is the GSM short messaging service (SMS) but the system is also equipped with an interactive voice response (IVR) system in order to support an additional automated speech prompt based delivery mechanism. The system also supports the use of GSM equipped Windows CE based palmtop computers and personal digital assistants, as subscriber terminals for the system, by means of a suite of software for accessing and managing the stock price information delivered to these terminals by the GSM SMS delivery mechanism.","PeriodicalId":218354,"journal":{"name":"ICC '98. 1998 IEEE International Conference on Communications. Conference Record. Affiliated with SUPERCOMM'98 (Cat. No.98CH36220)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122585446","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
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