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Proceedings of the IEEE Symposium on Emerging Technologies, 2005.最新文献

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System capacity analysis of hybrid direct sequence frequency hopping spread spectrum multiple access communication system 混合直接序列跳频扩频多址通信系统容量分析
Proceedings of the IEEE Symposium on Emerging Technologies, 2005. Pub Date : 2005-12-19 DOI: 10.1109/ICET.2005.1558874
M.A.R. Khan, D. Shao, F. Azam
{"title":"System capacity analysis of hybrid direct sequence frequency hopping spread spectrum multiple access communication system","authors":"M.A.R. Khan, D. Shao, F. Azam","doi":"10.1109/ICET.2005.1558874","DOIUrl":"https://doi.org/10.1109/ICET.2005.1558874","url":null,"abstract":"System capacity of noncoherent synchronous hybrid direct sequence (DS) slow frequency hopping (SFH) multiple access communication system is examined. System operates through the channel with additive white Gaussian noise (AWGN) and employs differential phase shift keying modulation (DPSK). System capacity is analyzed for random signature sequence and frequency hopping pattern, impact of DS code length, number of hopping frequencies, signal to noise ratio and tolerable error probability on the total number of possible simultaneous users in the system is determined","PeriodicalId":222828,"journal":{"name":"Proceedings of the IEEE Symposium on Emerging Technologies, 2005.","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128612879","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
Charge transport mechanism in PEPC complex PEPC复合物中的电荷输运机制
Proceedings of the IEEE Symposium on Emerging Technologies, 2005. Pub Date : 2005-12-19 DOI: 10.1109/ICET.2005.1558901
S. A. Moiz, M.M. Ahmed, K. Karimov
{"title":"Charge transport mechanism in PEPC complex","authors":"S. A. Moiz, M.M. Ahmed, K. Karimov","doi":"10.1109/ICET.2005.1558901","DOIUrl":"https://doi.org/10.1109/ICET.2005.1558901","url":null,"abstract":"In thisstudycurrent-voltage (1- V) characteristics of thin films of poly-N- epoxipropylcarbazole (PEPC)dopedwithAnthracene (An)havebeeninvestigated. ThePEPCfilms were grownonNickel (Ni) substrates, atroomtemperature, byusing acentrifugal machine operated at277g.I-V characteristics werethenevaluated asa function of temperature ranging from30to60'C.Reversible rectifying characteristics wereexhibited bythedevices inwhichthemagnitude ofcurrentincreases with increasing valuesoftemperature. Thishasbeen explained withtemperature dependent hopping process offreecarriers intheorganic films having positional aswellasenergetic disorders. Whereas ithas beenshownthatthenonlinear I-Vcharacteristics of thefabricated devices follow SpaceChargeLimited Current (SCLC)model. By applying thecorrelated Gaussian disorder mobilitv modeltotheexperimental SCLC,theenergetic disorder parameter andaverage intersite spacing between hopping locations havebeen calculated. It has beendemonstrated thatthe magnitude ofenergetic disorderness and average intersite distance inPEPCcomplex isrelatively higher whichcould beacause oflowholemobility. Indcex Tterms-Gaussian disorder model,organic semiconductors, temperature dependent charactcristics, holemobility.","PeriodicalId":222828,"journal":{"name":"Proceedings of the IEEE Symposium on Emerging Technologies, 2005.","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132480254","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
A novel neural network approach to gene clustering 一种新的神经网络基因聚类方法
Proceedings of the IEEE Symposium on Emerging Technologies, 2005. Pub Date : 2005-12-19 DOI: 10.1109/ICET.2005.1558884
Wei Hao, Songnian Yu
{"title":"A novel neural network approach to gene clustering","authors":"Wei Hao, Songnian Yu","doi":"10.1109/ICET.2005.1558884","DOIUrl":"https://doi.org/10.1109/ICET.2005.1558884","url":null,"abstract":"Clu.stering is a very usefidl and important technique for analyzing gene eJ)pression data. The self organizing nmap has shown to be one of the mlost useful clutstering algorithms. Hlowever, its applicability is limited by the fact that sonme knowledge abotut the clata is required prior to clustering. In this paper we introdutce a novel model of SOM, called growing hierar-chical self-organizing map (GIISOM) to c luster gene expression data. The training and growth process of the GI-ISOM is entirely dcata driven, requiiring no prior knowiledge or estinmates for p)aramneter specification, thtus helps to fintd not only the cappropriate number of cluisters bult also the hiera,'chical relations in the clata set. To validate oulr ressults, we employed a novel validation techniquie, wvhich is k-nown as figure of merit (FOM).","PeriodicalId":222828,"journal":{"name":"Proceedings of the IEEE Symposium on Emerging Technologies, 2005.","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125409721","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
Traffic estimation and real time prediction using adhoc networks 基于自组织网络的流量估计和实时预测
Proceedings of the IEEE Symposium on Emerging Technologies, 2005. Pub Date : 2005-12-19 DOI: 10.1109/ICET.2005.1558892
F. Batool, S.A. Khan
{"title":"Traffic estimation and real time prediction using adhoc networks","authors":"F. Batool, S.A. Khan","doi":"10.1109/ICET.2005.1558892","DOIUrl":"https://doi.org/10.1109/ICET.2005.1558892","url":null,"abstract":"This paper presents the process of developing a multilayer feed forward neural network combined with a backpropagation algorithm for forecasting travel time and traffic congestion. Prediction of travel time and traffic congestion based on past and current traffic information is not straightforward due to among others, the high complexity and ill predictability of traffic process, incorrect observations and different data sources. However it appears that neural networks can be exhaustively used to solve these problems. The system is designed on top of a mesh based communication infrastructure for the mobile nodes to communicate. Communication network comprises of multiple networks, i.e. VHF, UHF. The mesh based communication approach enables easy deployment of the system in real world. OLSR routing protocol is used for establishing an ad hoc network for peer-to-peer-communication","PeriodicalId":222828,"journal":{"name":"Proceedings of the IEEE Symposium on Emerging Technologies, 2005.","volume":"211 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123274259","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: 27
Low cost data transmission via metallic solids for sensor networking 低成本数据传输通过金属固体传感器网络
Proceedings of the IEEE Symposium on Emerging Technologies, 2005. Pub Date : 2005-12-19 DOI: 10.1109/ICET.2005.1558879
C. Bacher, P. Palensky, S. Mahlknecht
{"title":"Low cost data transmission via metallic solids for sensor networking","authors":"C. Bacher, P. Palensky, S. Mahlknecht","doi":"10.1109/ICET.2005.1558879","DOIUrl":"https://doi.org/10.1109/ICET.2005.1558879","url":null,"abstract":"Thispaperpresents a low-cost andlow-power solution fordatatransmission viametallic solids. It usesultrasonic wavesinmetal pipes tocarry the information, since wireline orradio transmission is notpossible incertain cases. Thesender nodes are designed inalowpowerstyle inorder tobesupplied bybatteries. Additionally, thenodes areusing off-theshelf technology andarehighly integrated toreduce costsdramatically, compared tosimilar existing technologies.","PeriodicalId":222828,"journal":{"name":"Proceedings of the IEEE Symposium on Emerging Technologies, 2005.","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116073022","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: 16
An analysis of the effects of multiple access interference in DS-CDMA reverse link DS-CDMA反向链路中多址干扰的影响分析
Proceedings of the IEEE Symposium on Emerging Technologies, 2005. Pub Date : 2005-12-19 DOI: 10.1109/ICET.2005.1558877
A.A. Khan, S. Bashir, S.I. Shah
{"title":"An analysis of the effects of multiple access interference in DS-CDMA reverse link","authors":"A.A. Khan, S. Bashir, S.I. Shah","doi":"10.1109/ICET.2005.1558877","DOIUrl":"https://doi.org/10.1109/ICET.2005.1558877","url":null,"abstract":"Multiple access interference (MAI) is the most significant limiting factor on the capacity of the conventional DS-CDMA systems. In this paper an analysis of the character of MAI is carried out. The main causes of intra-cell MAI and their effects on the system are highlighted through simulation and analysis. A considerable research effort in the development of efficient multiple user detection (MUD) techniques is in progress, however no concrete analysis of MAI and its character modeling is found in the literature. In aim paper numerous factors which result in MAI enhancement like asynchronous reverse channel, semi-orthogonal long PN codes and increase in users are analyzed. This quantification of MAI character result in its clearer understanding and leads to a more realistic and efficient MOD algorithms","PeriodicalId":222828,"journal":{"name":"Proceedings of the IEEE Symposium on Emerging Technologies, 2005.","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121520904","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 new method for fuzzy hidden Markov models in speech recognition 语音识别中的模糊隐马尔科夫模型新方法
Proceedings of the IEEE Symposium on Emerging Technologies, 2005. Pub Date : 2005-12-19 DOI: 10.1109/ICET.2005.1558851
M. Tarihi, M. Taheri, H. Bababeyk
{"title":"A new method for fuzzy hidden Markov models in speech recognition","authors":"M. Tarihi, M. Taheri, H. Bababeyk","doi":"10.1109/ICET.2005.1558851","DOIUrl":"https://doi.org/10.1109/ICET.2005.1558851","url":null,"abstract":"Thispaperproposes a Ftuzzi approach tothe Hidden Markov Model(HMM). This method called the fizzy HMMfbrspeech andspeaker recognition asan application offizzy expectation maximizing algorithm inHMM.Thefitzzy HMM algorithm isregar-ded asan application of'the,fizzy expectation-maximization (EM)algorithm totheBatum-Welch algorithm inthe HMM. TheTexas Instruments p4uised speech and speaker recognition experiments andshowbetter results fbr.fiuzzv HMMscompared withconventional HMMs.Equation andhowestimation ofdiscrete and continuious HMM parameters on basedthistwo algorithm isexplained andperfbrmance oftwospeech recognition methodtbronehundred issurveved. This papershowbetter results forthefiuzzy HMVM, compared with theconventional HMM.","PeriodicalId":222828,"journal":{"name":"Proceedings of the IEEE Symposium on Emerging Technologies, 2005.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131171536","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
Mobility vs. predictive MPR selection for mobile ad hoc networks using OLSR 使用OLSR的移动自组织网络的移动性与预测MPR选择
Proceedings of the IEEE Symposium on Emerging Technologies, 2005. Pub Date : 2005-12-19 DOI: 10.1109/ICET.2005.1558854
A.Y. Khan, S. Rashid, A. Iqbal
{"title":"Mobility vs. predictive MPR selection for mobile ad hoc networks using OLSR","authors":"A.Y. Khan, S. Rashid, A. Iqbal","doi":"10.1109/ICET.2005.1558854","DOIUrl":"https://doi.org/10.1109/ICET.2005.1558854","url":null,"abstract":"Mobility drastically decreases theconnectivity of adhocnetworks ascompared toa network with consistent dispersed nodes. A network can be simulated forrouting protocol performance using diffrrent available mobility models. Butforour scenariodevelopment undernon-deterministi c dynamic movement ofnodes, noneofthealready existing modelsprovides adequate fiJnctionality. Therefbre thefocus ofstudy inthis research isto develop apredictive mobility modelthat provides predictive routes byenabling network toaccess mobile nodethrough existing andprevious multipoint relays (MPRs). Thepredictive routes inrouting tables thus guarantee minimum chances ofdata orpacket loss for thatmobilenode,bydeploying theconcept of redundant MPRs. We illustrate ourproposed algorithm withthehelpofan example. Future directions arealso given attheend.","PeriodicalId":222828,"journal":{"name":"Proceedings of the IEEE Symposium on Emerging Technologies, 2005.","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133346306","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
Scheduling of sequence-dependant jobs on parallel multiprocessor systems using a branch and bound-based Petri net 并行多处理器系统中基于分支和边界的Petri网的顺序相关作业调度
Proceedings of the IEEE Symposium on Emerging Technologies, 2005. Pub Date : 2005-12-19 DOI: 10.1109/ICET.2005.1558904
Abolfazl Jalilvand, S. Khanmohammadi, F. Shabaninia
{"title":"Scheduling of sequence-dependant jobs on parallel multiprocessor systems using a branch and bound-based Petri net","authors":"Abolfazl Jalilvand, S. Khanmohammadi, F. Shabaninia","doi":"10.1109/ICET.2005.1558904","DOIUrl":"https://doi.org/10.1109/ICET.2005.1558904","url":null,"abstract":"This paper presents a new branch-and-bound algorithm for minimizing the make-span of a job-shop scheduling problem where n jobs must be scheduled on m machines. It is assumed that the jobs are available at time zero and have sequence-dependent setup times on machines. For solving the scheduling problem we develop a new branch and bound system which constructs its search tree gradually and does not need a large size memory. An upper-bound cost (UBC) is introduced to initialize the root node in search tree which reduces Branch and Bound computations. For modeling the manufacturing system and applying the desired sequence-dependent schedule on it, a supervisor Petri net is introduced. The proposed methods are verified through a computational experiment","PeriodicalId":222828,"journal":{"name":"Proceedings of the IEEE Symposium on Emerging Technologies, 2005.","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134589403","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
Six state routing model (SSRM) for mobile ad hoc networks 移动自组网的六状态路由模型(SSRM)
Proceedings of the IEEE Symposium on Emerging Technologies, 2005. Pub Date : 2005-12-19 DOI: 10.1109/ICET.2005.1558859
S. Lqbal, A. Iqbal
{"title":"Six state routing model (SSRM) for mobile ad hoc networks","authors":"S. Lqbal, A. Iqbal","doi":"10.1109/ICET.2005.1558859","DOIUrl":"https://doi.org/10.1109/ICET.2005.1558859","url":null,"abstract":"Althouigh there have been a nuimber of' Quality of' Service (QoS) routting protocols already proposed for the Mobile Ad Hoc Networks (MANETs), they share the idea that one route should be selected oUt qo all available routes based on optimizing some parameters like delay, throughput or packet loss ratio. In this paper, Six State Routing Model (SSRM) has been proposed tbr QoS throuigh real time traffic support in MANETs. In MANETs, one hop and two hop neighborhood links break frequently dtue to topology, updates and transmission range, which require real time recovery. SSRM addresses the key issues like frequent topology update, transmission range and sleep mode by introducing different states oJ nodes and switching from one state to other takes place through optimization criteria such as throuighput and reliability. All nodes existing in SSRM perjbrm ejfrctive rouiting discovery throu-igh proactive local route infbrmation updates. This will provide reliability of communication by redutcing packet loss ratio and increasing packet delivery ratio in highly dynamic mobile ad hoc","PeriodicalId":222828,"journal":{"name":"Proceedings of the IEEE Symposium on Emerging Technologies, 2005.","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134609619","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
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