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European Transactions on Telecommunications最新文献

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Design and analysis of one new construction for multiple groups optical orthogonal codes 一种新型多组正交码结构的设计与分析
European Transactions on Telecommunications Pub Date : 2010-10-01 DOI: 10.1002/ett.1441
Chongfu Zhang
{"title":"Design and analysis of one new construction for multiple groups optical orthogonal codes","authors":"Chongfu Zhang","doi":"10.1002/ett.1441","DOIUrl":"https://doi.org/10.1002/ett.1441","url":null,"abstract":"The common construction for optimal optical orthogonal code (OOC) based on finite field is investigated. Since one group OOC results in decreased security of an optical code division multiple access (OCDMA) system, a novel algorithm of this construction for multiple groups OOC (MOOC) based on finite field is proposed. Using computer simulation, several groups of the MOOC can be obtained when different primitive elements are selected. These results show that any MOOC can be obtained successfully by using the method. Copyright © 2010 John Wiley & Sons, Ltd.","PeriodicalId":50473,"journal":{"name":"European Transactions on Telecommunications","volume":"3 1","pages":"558-562"},"PeriodicalIF":0.0,"publicationDate":"2010-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83749807","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
Performance analysis of FFH/MFSK receivers with noise-normalisation combining over Nakagami-m fading channels with partial-band jamming 噪声归一化组合FFH/MFSK接收机在部分频带干扰下的Nakagami-m衰落信道性能分析
European Transactions on Telecommunications Pub Date : 2010-10-01 DOI: 10.1002/ett.1420
Zhiqiang Zhou, Shaoqian Li, Yufan Cheng
{"title":"Performance analysis of FFH/MFSK receivers with noise-normalisation combining over Nakagami-m fading channels with partial-band jamming","authors":"Zhiqiang Zhou, Shaoqian Li, Yufan Cheng","doi":"10.1002/ett.1420","DOIUrl":"https://doi.org/10.1002/ett.1420","url":null,"abstract":"The performance of a fast frequency-hopped M-ary orthogonal frequency-shift-keying (FFH/MFSK) receiver with noise-normalisation combining over Nakagami-m fading channels with partial-band noise jamming and additive white Gaussian noise (AWGN) is analysed. Instead of numerical integration, a closed-form error probability expression is obtained. The analytical results validate the simulation results. It is shown that there is an optimum diversity order and the corresponding best-case performance is investigated. Copyright © 2010 John Wiley & Sons, Ltd.","PeriodicalId":50473,"journal":{"name":"European Transactions on Telecommunications","volume":"136 1","pages":"526-531"},"PeriodicalIF":0.0,"publicationDate":"2010-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79611856","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
Access network discovery and selection in the evolved 3GPP multi-access system architecture 演进3GPP多址系统架构中的接入网发现与选择
European Transactions on Telecommunications Pub Date : 2010-10-01 DOI: 10.1002/ett.1410
J. Sachs, M. Olsson
{"title":"Access network discovery and selection in the evolved 3GPP multi-access system architecture","authors":"J. Sachs, M. Olsson","doi":"10.1002/ett.1410","DOIUrl":"https://doi.org/10.1002/ett.1410","url":null,"abstract":"The system architecture evolution (SAE) of mobile networks specified in 3GPP release 8 comprises an evolved packet core (EPC) network to which different types of access networks can be connected. Inter-system mobility management enables users to change the access network while maintaining ongoing data sessions. One important functionality in a 3GPP system is how a mobile terminal discovers and selects available access networks. In this paper we describe the access network discovery and selection functionality used in 3GPP release 8; we explain the differences of the methods applied for 3GPP access networks (GERAN, UTRAN, E-UTRAN), for fixed or wireless non-3GPP access networks (e.g. WLAN, WiMAX), as well as the optimisation used for CDMA2000 access networks. Copyright © 2010 John Wiley & Sons, Ltd.","PeriodicalId":50473,"journal":{"name":"European Transactions on Telecommunications","volume":"53 1","pages":"544-557"},"PeriodicalIF":0.0,"publicationDate":"2010-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76239259","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
Fairness-aware user selection and resource allocation in MISO-OFDMA MISO-OFDMA中公平感知的用户选择与资源分配
European Transactions on Telecommunications Pub Date : 2010-09-29 DOI: 10.1002/ett.1447
Vasileios D. Papoutsis, I. Fraimis, S. Kotsopoulos
{"title":"Fairness-aware user selection and resource allocation in MISO-OFDMA","authors":"Vasileios D. Papoutsis, I. Fraimis, S. Kotsopoulos","doi":"10.1002/ett.1447","DOIUrl":"https://doi.org/10.1002/ett.1447","url":null,"abstract":"The problem of user selection and resource allocation for the downlink of wireless systems operating over a frequency-selective channel is investigated. It is assumed that the Base Station (BS) uses many antennas, whereas a single antenna is available to each user (Multiple Input Single Output—MISO case). To relieve heavy computational burden, a suboptimal, but efficient algorithm is devised that is based on Zero Forcing (ZF) beamforming and is less complex than other approaches. The algorithm maximises the sum of the users' data rates subject to constraints on total available power and proportional fairness among users' data rates. Simulation results are provided to indicate that the algorithm can satisfy the fairness criterion. Thus, the algorithm can be applied to latest-generation wireless systems that provide Quality-of-Service (QoS) guarantees. Copyright © 2010 John Wiley & Sons, Ltd.","PeriodicalId":50473,"journal":{"name":"European Transactions on Telecommunications","volume":"35 1","pages":"567-573"},"PeriodicalIF":0.0,"publicationDate":"2010-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76404560","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
Performance design of an ATM node on the basis of the experience from the BLNT RACE project 基于BLNT RACE项目经验的ATM节点性能设计
European Transactions on Telecommunications Pub Date : 2010-09-07 DOI: 10.1002/ett.4460050211
H. Heiss, E. Wallmeier, G. Rigolio, T. Toniatti
{"title":"Performance design of an ATM node on the basis of the experience from the BLNT RACE project","authors":"H. Heiss, E. Wallmeier, G. Rigolio, T. Toniatti","doi":"10.1002/ett.4460050211","DOIUrl":"https://doi.org/10.1002/ett.4460050211","url":null,"abstract":"This paper contains recent results of ATM traffic studies obtained by the project partners involved in the Broadband Local Network Technology (BLNT) RACE project 1012. These studies are concerned with congestion notification methods, problems in conjunction with Peak Cell Rate control and the analysis of multi-stage switching systems. The implications of these studies on the design and performance of an ATM node are discussed.","PeriodicalId":50473,"journal":{"name":"European Transactions on Telecommunications","volume":"1 1","pages":"199-206"},"PeriodicalIF":0.0,"publicationDate":"2010-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82370934","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
Switching block studies, network performance evaluation and traffic engineering for ATM ATM的交换块研究、网络性能评估和流量工程
European Transactions on Telecommunications Pub Date : 2010-09-07 DOI: 10.1002/ett.4460050210
J. Domingo, H. Michiel, R. Habermann, M. Sommer, N. Mitrou, Y. Du, Martina Götz, R. Lehnert, Zhili Sun, J. Cosmas, T. Renger, T. Theimer
{"title":"Switching block studies, network performance evaluation and traffic engineering for ATM","authors":"J. Domingo, H. Michiel, R. Habermann, M. Sommer, N. Mitrou, Y. Du, Martina Götz, R. Lehnert, Zhili Sun, J. Cosmas, T. Renger, T. Theimer","doi":"10.1002/ett.4460050210","DOIUrl":"https://doi.org/10.1002/ett.4460050210","url":null,"abstract":"This paper summarizes the work done in RACE project 1022 “Technology for ATD” on performance studies of ATM switching block architectures and the studies on network performance within a small ATM network, the so called RACE ATD Technology Testbed (RATT). The aim of the studies was to investigate the behaviour of a typical ATM network under nominal load. By using the tromboning links in the RATT we were also able to study long distance connections even in the limited size of the RATT network. Special attention has been given to define a traffic scenario which can also be set up for the planned experiments. The goal of the planned experiments is to validate the performance results predicted in our studies.","PeriodicalId":50473,"journal":{"name":"European Transactions on Telecommunications","volume":"35 1","pages":"187-198"},"PeriodicalIF":0.0,"publicationDate":"2010-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78923891","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
A TMN approach to traffic control in B-ISDN 一种用于B-ISDN业务控制的TMN方法
European Transactions on Telecommunications Pub Date : 2010-09-07 DOI: 10.1002/ett.4460050214
E. Bagnasco, M. Burgassi, P. Castelli
{"title":"A TMN approach to traffic control in B-ISDN","authors":"E. Bagnasco, M. Burgassi, P. Castelli","doi":"10.1002/ett.4460050214","DOIUrl":"https://doi.org/10.1002/ett.4460050214","url":null,"abstract":"This paper presents an approach to B-ISDN traffic control functionality allocation in the framework of the TMN reference configuration developed within the RACE Programme by project R1053 TERRACE. The TMN concept has been introduced by standardization activities to support the management requirements of the Administrations, and its basic idea is to provide an architecture to achieve the interconnection between Operation Systems and Network Elements for the exchange of management information using standardised interfaces. Within TERRACE this concept has been revised in order to cater for the complex IBC network and service environment proposed by RACE and the TMN reference configuration has been defined as composed of a set of models, namely the structural framework and the functional, information, communication and usage models. The paper will primarily focus on the relationship between the TMN and the B-ISDN traffic control functionality, with the objective to propose their allocation to the TMN functional blocks.","PeriodicalId":50473,"journal":{"name":"European Transactions on Telecommunications","volume":"26 1","pages":"227-234"},"PeriodicalIF":0.0,"publicationDate":"2010-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82797249","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
The pan-European mobile radio system: Part I 泛欧洲移动无线电系统:第一部分
European Transactions on Telecommunications Pub Date : 2010-09-07 DOI: 10.1002/ETT.4460050216
L. Hanzo, R. Steele
{"title":"The pan-European mobile radio system: Part I","authors":"L. Hanzo, R. Steele","doi":"10.1002/ETT.4460050216","DOIUrl":"https://doi.org/10.1002/ETT.4460050216","url":null,"abstract":"Having considered the mapping of logical traffic and control channels onto physical channels, speech and error correction coding, interleaving as well as the TDMA hierarchy and synchronisation problems in Part I of this contribution, here mainly transmission issues are addressed [1–6] and some performance figures are provided. Constant envelope partial response Gaussian Minimum Shift Keying (GMSK) with a channel spacing of 200 kHz is deployed to support 125 duplex channels in the 890 - 915MHz uplink and 935 - 960 MHz downlink bands, respectively. At a transmission rate of 271 kbit/s 1.35 bit/s/Hz spectral efficiency is achieved. The controlled GMSK-induced and un-controlled channel-induced inter-symbol interferences are removed by the channel equaliser. The set of standardised wide-band GSM channels is introduced in order to provide bench-markers for performance comparisons. Efficient power budgeting and minimum co-channel interferences are ensured by the combination of adaptive power- and handover-control based on weighted averaging of up to eight uplink and downlink system parameters. Discontinuous transmissions (DTX) assisted by reliable spectral-domain voice activity detection (VAD) and comfort-noise insertion further reduce interferences and power consumption. Due to ciphering, no unprotected information is sent via the radio link. As a result, spectrally efficient, high-quality mobile communications with a variety of services and international roaming is possible in cells of up to 35km radius for signal to noise- and interference-ratios in excess of 10 - 12 dBs.","PeriodicalId":50473,"journal":{"name":"European Transactions on Telecommunications","volume":"56 1","pages":"245-260"},"PeriodicalIF":0.0,"publicationDate":"2010-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82300345","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
Performance of shared medium access protocols for ATM traffic concentration 面向ATM业务集中的共享介质访问协议性能研究
European Transactions on Telecommunications Pub Date : 2010-09-07 DOI: 10.1002/ett.4460050213
T. Toniatti, L. Verri, O. Casals, J. García-Vidal, C. Blondia, J. Angelopoulos, I. Venieris
{"title":"Performance of shared medium access protocols for ATM traffic concentration","authors":"T. Toniatti, L. Verri, O. Casals, J. García-Vidal, C. Blondia, J. Angelopoulos, I. Venieris","doi":"10.1002/ett.4460050213","DOIUrl":"https://doi.org/10.1002/ett.4460050213","url":null,"abstract":"The paper analyses the problem of Medium Access Control in a Passive Optical Network, used to concentrate ATM user traffic. Feasible solutions for the problem are investigated and two protocols to resolve contention on the shared medium are presented, the single cell and the multiple cell frame based. The performance of the two protocols is evaluated, obtaining indications about the transfer delay introduced by the protocols and the amount of buffering needed at the user side.","PeriodicalId":50473,"journal":{"name":"European Transactions on Telecommunications","volume":"15 5-6","pages":"219-226"},"PeriodicalIF":0.0,"publicationDate":"2010-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/ett.4460050213","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72452534","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: 13
A new approach to sequential detection 一种新的序列检测方法
European Transactions on Telecommunications Pub Date : 2010-09-07 DOI: 10.1002/ett.4460050215
K. Metzger
{"title":"A new approach to sequential detection","authors":"K. Metzger","doi":"10.1002/ett.4460050215","DOIUrl":"https://doi.org/10.1002/ett.4460050215","url":null,"abstract":"The known suboptimal sequential detection methods need a minimum-phase signal as input for achieving good performance. As a consequence the received signal must be first transformed to minimum-phase by an adaptive prefilter if simplified detection methods are applied. This roundabout way is avoided in a novel algorithm for sequential detection, where the metric calculation itself is fitted to the special situation of the compare-and-select procedure. The detection method uses two different metrics, one for comparing paths, which have merged in a common trellis-state, the other for comparing paths which have just emerged from a common state. In this way the usual adaptive prefilter can be saved, because the proposed detector does not require a minimum-phase signal at its input. Simulation results show excellent management of distorted and noisy signals.","PeriodicalId":50473,"journal":{"name":"European Transactions on Telecommunications","volume":"4 1","pages":"235-244"},"PeriodicalIF":0.0,"publicationDate":"2010-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75485511","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
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