European Transactions on Telecommunications最新文献_第10页

Theoretical performance evaluation of EDCA in IEEE 802.11e wireless LANs IEEE 802.11e无线局域网中EDCA的理论性能评价

European Transactions on Telecommunications Pub Date : 2010-04-01 DOI: 10.1002/ett.1442

F. Peng, H. Alnuweiri, Victor C. M. Leung

引用次数: 8

Communication Networks Mahalanobis distance-based traffic matrix estimation 通信网络基于马氏距离的流量矩阵估计

European Transactions on Telecommunications Pub Date : 2010-04-01 DOI: 10.1002/ett.1382

Dingde Jiang, Xingwei Wang, Lei Guo

引用次数: 9

Information Theory MAP sequence equalization for imperfect frequency selective channel knowledge 不完全频率选择信道知识的信息论MAP序列均衡

European Transactions on Telecommunications Pub Date : 2010-03-01 DOI: 10.1002/ett.1404

N. Sellami, M. Siala, A. Roumy, I. Kammoun

引用次数: 2

Transmission Systems Techniques for reducing out-of-band radiation in OFDM based transmission systems 传输系统基于OFDM的传输系统中减少带外辐射的技术

European Transactions on Telecommunications Pub Date : 2010-03-01 DOI: 10.1002/ett.1406

S. Brandes, I. Cosovic, M. Schnell

{"title":"Transmission Systems Techniques for reducing out-of-band radiation in OFDM based transmission systems","authors":"S. Brandes, I. Cosovic, M. Schnell","doi":"10.1002/ett.1406","DOIUrl":"https://doi.org/10.1002/ett.1406","url":null,"abstract":"Orthogonal frequency-division multiplexing (OFDM) suffers from high out-of-band radiation that prohibits the efficient use of the available spectrum particularly in OFDM based overlay systems. Recently, three different techniques for sidelobe suppression have been proposed and are recapitulated in this paper. One approach referred to as subcarrier weighting is based on weighting the individual subcarriers such that their sidelobes cancel each other. Alternatively, cancellation carriers are inserted at the edges of the spectrum in order to cancel the sidelobes of the transmit (Tx) signal. Thirdly, with the multiple choice sequences method, the symbol vector is transformed into multiple equivalent Tx sequences and the one with the lowest sidelobe power is transmitted. Sidelobes are reduced significantly at the expense of a slightly ncreased bit error rate or a reduced throughput. In order to further improve performance, in the paper, the combination with Tx \u0000windowing and reasonable combinations of the three methods are proposed and investigated. Simulation results show that the suppression achieved with the joint application of two techniques considerably exceeds the suppression achieved with the methods applied separately.","PeriodicalId":50473,"journal":{"name":"European Transactions on Telecommunications","volume":"2 1","pages":"142-153"},"PeriodicalIF":0.0,"publicationDate":"2010-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75939349","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

Wireless Systems Fixed relaying with adaptive antenna arrays for the downlink of multihop cellular networks 无线系统用于多跳蜂窝网络下行链路的自适应天线阵列固定中继

European Transactions on Telecommunications Pub Date : 2010-03-01 DOI: 10.1002/ett.1400

Z. Dawy, I. Nabi

{"title":"Wireless Systems Fixed relaying with adaptive antenna arrays for the downlink of multihop cellular networks","authors":"Z. Dawy, I. Nabi","doi":"10.1002/ett.1400","DOIUrl":"https://doi.org/10.1002/ett.1400","url":null,"abstract":"Adinoyi A, 2007, IEEE T WIREL COMMUN, V6, P533, DOI 10.1109-TWC.2007.05227; ALEN B, 2005, ADAPTIVE ARRAY SYSTE; Alexiou A, 2004, IEEE COMMUN MAG, V42, P90, DOI 10.1109-MCOM.2004.1336725; Balanis C. A., 2005, ANTENNA THEORY ANAL; Cho JW, 2004, IEEE J SEL AREA COMM, V22, P1206, DOI 10.1109-JASC.2004.829340; DAWY Z, 2003, IEEE GLOB COMM C GLO; DAWY Z, 2006, IEEE GLOB COMM C GLO; DAWY Z, 2006, IEEE INT C COMM ICC; *ETSI, 1998, 3003 UMTS ETSI; Goldsmith A., 2005, WIRELESS COMMUNICATI; HERHOLD P, 2003, IEEE SEM VEH TECHN C; Holma H, 2000, WCDMA UMTS; KO YB, 2000, P IEEE INFOCOM 2000; Laiho J., 2006, RADIO NETWORK PLANNI; Mailoux R. J., 2005, PHASED ARRAY ANTENNA; ONAT FA, 2006, IEEE GLOBECOM; ONAT FA, 2006, IEEE CAN C EL COMP E; Pabst R, 2004, IEEE COMMUN MAG, V42, P80, DOI 10.1109-MCOM.2004.1336724; SAHA AK, 2004, IEEE GLOB COMM C GLO; SINGH H, 2003, 14 IEEE INT S PERS I; SPYROPOULOS A, 2003, P ICC 2003 ANCH AL U; TAKAI M, 2003, 6 ACM INT WORKSH MOD; Tsai JA, 2004, IEEE T WIREL COMMUN, V3, P695, DOI 10.1109-TWC.2004.826332; VILZMANN R, 2005, IEEE WORKSH WIR MESH; YAACOUB E, 2005, 16 IEEE INT S PERS I; Yanikomeroglu H, 2002, 2 WORKSH APPL SERV W; YI S, 2003, ACM INT S MOB AD HOC","PeriodicalId":50473,"journal":{"name":"European Transactions on Telecommunications","volume":"8 1","pages":"167-177"},"PeriodicalIF":0.0,"publicationDate":"2010-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81102886","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

Communication Networks Joint turbo equalisation and carrier synchronisation for SC-FDE schemes 通信网络SC-FDE方案的联合turbo均衡和载波同步

European Transactions on Telecommunications Pub Date : 2010-03-01 DOI: 10.1002/ett.1377

R. Dinis, Teresa Araujo, P. Pedrosa, F. Nunes

引用次数: 18

A hybrid multirate MAC protocol providing trade‐off between throughput and fairness in future TD‐CDMA networks 一种混合多速率MAC协议，在未来的TD - CDMA网络中提供吞吐量和公平性之间的权衡

European Transactions on Telecommunications Pub Date : 2009-12-23 DOI: 10.1002/ETT.1402

P. Vlacheas, Eleni Kolokotroni, E. Tragos, M. Theologou

引用次数: 0

Optical Communications Comparison of hard-decision and soft-decision channel coded M-ary PPM performance over free space optical links 光通信自由空间光链路上硬决策和软决策信道编码m -玛利PPM性能的比较

European Transactions on Telecommunications Pub Date : 2009-12-01 DOI: 10.1002/ett.1343

S. Muhammad, T. Javornik, I. Jelovcan, Zabih Ghassemlooy, E. Leitgeb

引用次数: 26

Signal Processing Computationally efficient joint partial crosstalk cancellation and multi-user power control algorithm in xDSL networks 信号处理xDSL网络中计算效率高的联合部分串扰消除和多用户功率控制算法

European Transactions on Telecommunications Pub Date : 2009-12-01 DOI: 10.1002/ett.1348

M. Maesoumi, M. Masnadi-Shirazi, M. Dousti

{"title":"Signal Processing Computationally efficient joint partial crosstalk cancellation and multi-user power control algorithm in xDSL networks","authors":"M. Maesoumi, M. Masnadi-Shirazi, M. Dousti","doi":"10.1002/ett.1348","DOIUrl":"https://doi.org/10.1002/ett.1348","url":null,"abstract":"Far-end crosstalk (FEXT) is the major limitation to achieve high data rates in very high bit rate digital subscriber line (VDSL) systems. Full crosstalk cancellation (FCC) techniques have been proposed to mitigate the effect of crosstalk. However, these are too complex for application in typical VDSL binders. Considering the fact that there are only a few strongest cross-talkers that contribute to main part of crosstalk, the crosstalk cancellation can be simplified to line selection (LS), tone selection (TS) and joint line-tone selection (JLTS) partial crosstalk cancellation (PCC). These all result in much less online complexity. In this paper, first, we propose a new modified JLTS algorithm with significantly lower initialisation complexity than the optimal JLTS (OJLTS) algorithm and approximately with similar performance. Then a novel joint algorithm is presented that combines the multi-user power control technique with the PCC scheme to achieve near the capacity rates. We also consider dynamic online complexity constraint for each user. This joint algorithm leads to a much larger online complexity reduction (around 60% for long lines) and higher data rates at the expense of slightly higher initialisation complexity. The performance of the proposed algorithm is verified by some simulation results and compared with current algorithms that use flat power spectral densities (PSDs) and other existing joint algorithms. Copyright © 2009 John Wiley & Sons, Ltd.","PeriodicalId":50473,"journal":{"name":"European Transactions on Telecommunications","volume":"100 1","pages":"770-781"},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75663510","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

Optical Communications Minimisation of end-to-end delay in reconfigurable WDM networks using genetic algorithms 基于遗传算法的可重构WDM网络端到端时延最小化

European Transactions on Telecommunications Pub Date : 2009-12-01 DOI: 10.1002/ett.1344

R. Durán, I. Miguel, N. Merayo, P. Fernández, R. Lorenzo, E. Abril

引用次数: 5