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TENCON 2007 - 2007 IEEE Region 10 Conference最新文献

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Collaborative handover support in a heterogeneous wireless environment for real-time communication in mobile learning 移动学习中异构无线环境下实时通信的协同切换支持
TENCON 2007 - 2007 IEEE Region 10 Conference Pub Date : 2007-10-01 DOI: 10.1109/TENCON.2007.4428940
He Yan, W. Cheng, Di Wu, C. Zhu
{"title":"Collaborative handover support in a heterogeneous wireless environment for real-time communication in mobile learning","authors":"He Yan, W. Cheng, Di Wu, C. Zhu","doi":"10.1109/TENCON.2007.4428940","DOIUrl":"https://doi.org/10.1109/TENCON.2007.4428940","url":null,"abstract":"Due to the thriving of mobile network and portable device, distance learning is evolved from desktop computer to mobile device. Real-time handover is a very important capability for mobile learning devices since the interruptions caused by handover make learners feel frustrated and lose their interests, which in turn resulting in less engagement in mobile learning. In this paper, we propose a collaborative seamless handover approach, called LCSH, suitable for real-time communications between heterogeneous wireless environments. LCSH takes not only spatial factors into account but also the potential benefits of collaborative work given by adjacent mobile nodes which can be identified by the spatial location information. Simulations show that LCSH consistently outperforms existing handover policies and significantly extends mobile clients' uninterrupted communication.","PeriodicalId":384583,"journal":{"name":"TENCON 2007 - 2007 IEEE Region 10 Conference","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115253497","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
Broadband monopole antenna for DTV reception and gsm operation in the mobile phone 用于移动电话中数字电视接收和gsm操作的宽带单极天线
TENCON 2007 - 2007 IEEE Region 10 Conference Pub Date : 2007-10-01 DOI: 10.1109/TENCON.2007.4429024
Cheng-Tse Lee, Kin‐Lu Wong, Yuan-Chih Lin
{"title":"Broadband monopole antenna for DTV reception and gsm operation in the mobile phone","authors":"Cheng-Tse Lee, Kin‐Lu Wong, Yuan-Chih Lin","doi":"10.1109/TENCON.2007.4429024","DOIUrl":"https://doi.org/10.1109/TENCON.2007.4429024","url":null,"abstract":"A broadband monopole antenna comprising a narrow radiating strip of length 120 mm and a simple internal matching portion for mobile phone application is presented. The monopole antenna can generate a wide operating band to cover the DTV reception in the UHF frequency band (470-862 MHz) and mobile communication in the GSM850/900 bands (824-894 MHz/890-960 MHz). The radiating strip is also promising to be retracted to be concealed inside the casing of the mobile phone when not in use. Details of the proposed antenna are described in the paper.","PeriodicalId":384583,"journal":{"name":"TENCON 2007 - 2007 IEEE Region 10 Conference","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116066225","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 time-optimal algorithm for guard zone problem 警戒区问题的时间最优算法
TENCON 2007 - 2007 IEEE Region 10 Conference Pub Date : 2007-10-01 DOI: 10.1007/978-3-540-92295-7_14
Ranjan Mehera, R. Pal
{"title":"A time-optimal algorithm for guard zone problem","authors":"Ranjan Mehera, R. Pal","doi":"10.1007/978-3-540-92295-7_14","DOIUrl":"https://doi.org/10.1007/978-3-540-92295-7_14","url":null,"abstract":"","PeriodicalId":384583,"journal":{"name":"TENCON 2007 - 2007 IEEE Region 10 Conference","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121893031","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
Chaotic radio for audio communications 用于音频通信的混沌无线电
TENCON 2007 - 2007 IEEE Region 10 Conference Pub Date : 2007-10-01 DOI: 10.1109/TENCON.2007.4428955
P. Khumsat, Gklanarong Noulkeaw
{"title":"Chaotic radio for audio communications","authors":"P. Khumsat, Gklanarong Noulkeaw","doi":"10.1109/TENCON.2007.4428955","DOIUrl":"https://doi.org/10.1109/TENCON.2007.4428955","url":null,"abstract":"Chaotic wireless communication system suitable for audio transmission has been designed and implemented. The chaotic module was based on Chua's circuit and it has been realized from inductor, capacitor, resistor, and non-linear negative resistor. The negative non-linear resistor was constructed from resistors and operational amplifier. Chaotic masking technique has been selected as a mean of chaotic data modulation whereas synchronization relies on Pecora-Carroll technique. The chaotically-modulated signal has been further frequency modulated to frequency centered at 9 MHz making the system immune to non-linearity of the communication channel. Such frequency modulation process was achieved by voltage-controlled oscillator inside 74HC4046 IC. On the receiving end, the FM demodulation was performed by employing phase-locked loop technique. Measured results of the presented radio system are also given.","PeriodicalId":384583,"journal":{"name":"TENCON 2007 - 2007 IEEE Region 10 Conference","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122151066","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
Parameters setting and tuning for transition to a digital-based excitation system 过渡到数字励磁系统的参数设置和调谐
TENCON 2007 - 2007 IEEE Region 10 Conference Pub Date : 2007-10-01 DOI: 10.1109/TENCON.2007.4428790
Whei-Min Lin, Chang-Lin Lee
{"title":"Parameters setting and tuning for transition to a digital-based excitation system","authors":"Whei-Min Lin, Chang-Lin Lee","doi":"10.1109/TENCON.2007.4428790","DOIUrl":"https://doi.org/10.1109/TENCON.2007.4428790","url":null,"abstract":"There is a tendency for excitation control system to upgrade to the digital-based type, with the functions and benefits discussed in (September 1997). New computer models had been developed for representation of the renewal digital-based excitation system in transient stability studies after IEEE Std 421.5 [2] adoption. This paper provides a guide line for replacement of the excitation control system from analog-based to digital-based. These techniques had been used on large steam generator excitation systems of a nuclear power plant in Taiwan. An optimal set of excitation system settings plays a very important role in power system stability. This paper will address the parameters setting and field tuning method for a self-excited exciter rewired to be separated-excited with station auxiliary power. The performance indices were also checked and compared with IEEE Std 421.2[3].","PeriodicalId":384583,"journal":{"name":"TENCON 2007 - 2007 IEEE Region 10 Conference","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129932493","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
Improved QRM-ML detection with candidate selection for MIMO multiplexing systems 基于候选选择的MIMO多路复用系统改进QRM-ML检测
TENCON 2007 - 2007 IEEE Region 10 Conference Pub Date : 2007-10-01 DOI: 10.1109/TENCON.2007.4428838
Wei Peng, Shaodan Ma, T. Ng, Jiang Wang
{"title":"Improved QRM-ML detection with candidate selection for MIMO multiplexing systems","authors":"Wei Peng, Shaodan Ma, T. Ng, Jiang Wang","doi":"10.1109/TENCON.2007.4428838","DOIUrl":"https://doi.org/10.1109/TENCON.2007.4428838","url":null,"abstract":"This paper proposes an improved QR decomposition associated M algorithm for maximum-likelihood detection (QRM-ML) with candidate selection in multiple input multiple output (MIMO) multiplexing systems. In the proposed algorithm, only the points falling into a sub-set of constellation are selected as the candidates for each transmitted signal and included in the squared Euclidean distance calculation. Unlike the existing algorithms where the sub-set is fixed based on quadrant, the sub-set here is determined by the circle with center at the signal estimate and a pre-determined radius. By computer simulations, it is shown that the proposed QRM-ML algorithm can achieve the performance close to that of the existing QRM-ML algorithms with significantly reduced complexity.","PeriodicalId":384583,"journal":{"name":"TENCON 2007 - 2007 IEEE Region 10 Conference","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128470948","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
Evaluation of a self-organization scheme with topology control in mesh networks 网状网络中具有拓扑控制的自组织方案的评价
TENCON 2007 - 2007 IEEE Region 10 Conference Pub Date : 2007-10-01 DOI: 10.1109/TENCON.2007.4428992
V. Mirchandani, A. Prodan
{"title":"Evaluation of a self-organization scheme with topology control in mesh networks","authors":"V. Mirchandani, A. Prodan","doi":"10.1109/TENCON.2007.4428992","DOIUrl":"https://doi.org/10.1109/TENCON.2007.4428992","url":null,"abstract":"Mesh networks with an autonomous channel assignment can be used as a viable cost-effective alternative for a last mile broadband access. The channel assignment algorithm in mesh networks should be capable of reducing the overall interference in it. In this paper we have: (i) summarized the usefulness of our algorithm by drawing a comparison between the key features of our self-organization scheme with those of other significant schemes in literature, (ii) proposed a process for initiating the topology of self-organized mesh networks (iii) evaluated the impact of the initialization process on the performance of the self-organization algorithm for realistic scenarios with different mesh node densities and topologies.","PeriodicalId":384583,"journal":{"name":"TENCON 2007 - 2007 IEEE Region 10 Conference","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128341897","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
Fast adaptive GOP design for H.264/SVC H.264/SVC的快速自适应GOP设计
TENCON 2007 - 2007 IEEE Region 10 Conference Pub Date : 2007-10-01 DOI: 10.1109/TENCON.2007.4428784
Jun-Ren Ding, J. Yang
{"title":"Fast adaptive GOP design for H.264/SVC","authors":"Jun-Ren Ding, J. Yang","doi":"10.1109/TENCON.2007.4428784","DOIUrl":"https://doi.org/10.1109/TENCON.2007.4428784","url":null,"abstract":"In order to concurrently provide different video services for diverse access devices, the scalable quality and complexity services in a single bit stream offered by H.264-based scalable video coding (H.264/SVC) has gained a lot of attentions recently. However, the motion-compensated temporal filtering (MCTF) structure consumes a large amount of operation time when combined with Core Experiment 2 (CE2), which implements adaptive GOP detection (AGD). In this paper, we suggest a video content variation (VCV) feature to implement fast AGD method by using block-based classification before executing MCTF. Based on the JSVM 7.0 software, the simulation results show that the proposed method reduces about 67% of the operation time consumed on average as compared to the CE2.","PeriodicalId":384583,"journal":{"name":"TENCON 2007 - 2007 IEEE Region 10 Conference","volume":"326 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129431170","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
State-oriented based smart card internet access framework 基于状态的智能卡互联网接入框架
TENCON 2007 - 2007 IEEE Region 10 Conference Pub Date : 2007-10-01 DOI: 10.1109/TENCON.2007.4428975
Jyh-Win Huang, Ting-Wei Hou
{"title":"State-oriented based smart card internet access framework","authors":"Jyh-Win Huang, Ting-Wei Hou","doi":"10.1109/TENCON.2007.4428975","DOIUrl":"https://doi.org/10.1109/TENCON.2007.4428975","url":null,"abstract":"This paper proposes a new approach that integrates the simplified firewall and the state-oriented smart card technologies to construct a controllable and accountable Internet access framework. A smart card program is state-oriented or a state machine, which accepts pre-defined events and performs state transitions. The communication states of a smart card program are defined such that only \"authorized\" surfing targets could exchange messages. A pre-defined access control list (ACL), stored in the card, is the definition of permit or deny access that applies to addresses and/or protocols. The acceptance or rejection message is determined by matching the card program state and the ACL. In addition, a complete surfing account for tracing back is recorded. It is a by-product of the smart card authentication.","PeriodicalId":384583,"journal":{"name":"TENCON 2007 - 2007 IEEE Region 10 Conference","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123836787","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
Scrambling sequences in selective mapping for PAPR reduction in 16-QAM OFDM systems 选择性映射中的置乱序列降低16-QAM OFDM系统的PAPR
TENCON 2007 - 2007 IEEE Region 10 Conference Pub Date : 2007-10-01 DOI: 10.1109/TENCON.2007.4428853
Houshou Chen, Hsinying Liang
{"title":"Scrambling sequences in selective mapping for PAPR reduction in 16-QAM OFDM systems","authors":"Houshou Chen, Hsinying Liang","doi":"10.1109/TENCON.2007.4428853","DOIUrl":"https://doi.org/10.1109/TENCON.2007.4428853","url":null,"abstract":"In this paper, the combination of SLM technique and BCM scheme is proposed to reduce the PAPR in a 16-QAM OFDM system. Four binary Reed-Muller codes are used as the BCM component codes to construct a 16-QAM OFDM code, which is then decomposed into the direct sum of a correcting subcode for encoding information bits and a scrambling subcode for encoding PAPR bits. Different scrambling subcodes in natural and cyclic ordering are considered respectively. Simulation results show that some scrambling subcodes of the proposed scheme achieve good performance in PAPR reduction than the conventional SLM.","PeriodicalId":384583,"journal":{"name":"TENCON 2007 - 2007 IEEE Region 10 Conference","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123854063","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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