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2006 European Conference on Wireless Technology最新文献

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Correspondent authorization in the GSM telephony using watermarking technology 在GSM电话中使用水印技术进行通信授权
2006 European Conference on Wireless Technology Pub Date : 2006-09-01 DOI: 10.1109/ECWT.2006.280457
P. Gajewski, Z. Piotrowski
{"title":"Correspondent authorization in the GSM telephony using watermarking technology","authors":"P. Gajewski, Z. Piotrowski","doi":"10.1109/ECWT.2006.280457","DOIUrl":"https://doi.org/10.1109/ECWT.2006.280457","url":null,"abstract":"This paper describes conception of the correspondent authorization in the GSM link. Watermarking technology gives support for additional data hiding in the host signal. This additional data is known as a watermark signal. Watermark should be robust for loose compression in GSM 6.10 standard codec and should be transparent for human auditory system (HAS) in the host signal background. OFDM technology together with psychoacoustic MPEG model can be used for dedicated GSM authorization system. Several modes of watermark signal processing in the GSM link were presented. Results of the decoding as well as results of the ITU-R BS1116-1 subjective quality estimation tests were illustrated and commented","PeriodicalId":217349,"journal":{"name":"2006 European Conference on Wireless Technology","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115791661","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
A UWB micro-strip antenna design and simulation 一种超宽带微带天线的设计与仿真
2006 European Conference on Wireless Technology Pub Date : 2006-09-01 DOI: 10.1109/ECWT.2006.280522
A. Diet, A. Azoulay, A. Joisel, B. Duchêne
{"title":"A UWB micro-strip antenna design and simulation","authors":"A. Diet, A. Azoulay, A. Joisel, B. Duchêne","doi":"10.1109/ECWT.2006.280522","DOIUrl":"https://doi.org/10.1109/ECWT.2006.280522","url":null,"abstract":"We are concerned, herein, with the conception and the design of printed UWB antennas and with the analysis of their performances through figures of merit. State of the art gives the opportunity to exploit some empirical considerations about the shape and the methodology of conception. A simple structure is simulated by means of CST microwave studio to show the possibility of fulfilling, at a defined level, UWB antenna requirements such as matching, fidelity and quasi-isotropy of the radiation pattern with a simple micro-strip design and a standard technology","PeriodicalId":217349,"journal":{"name":"2006 European Conference on Wireless Technology","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131488089","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
Conformance Metrics and Evaluation of HSDPA Systems with RF Impairments in Next Generation Wireless Standards 下一代无线标准中具有射频损伤的HSDPA系统的一致性度量和评估
2006 European Conference on Wireless Technology Pub Date : 2006-09-01 DOI: 10.1109/ECWT.2006.280463
G. Chrisikos, G. Paparisto
{"title":"Conformance Metrics and Evaluation of HSDPA Systems with RF Impairments in Next Generation Wireless Standards","authors":"G. Chrisikos, G. Paparisto","doi":"10.1109/ECWT.2006.280463","DOIUrl":"https://doi.org/10.1109/ECWT.2006.280463","url":null,"abstract":"High speed downlink packet access (HSDPA) is a service extension for the Universal Mobile Telecommunications System (UMTS) wideband code division multiple access (W-CDMA) standard that delivers higher data rates with lower latency and increased network capacity. The design of such systems requires that they perform within specified bounds in terms of numerous transmitter and receiver metrics such as spectral content, error vector magnitude (EVM), and bit-error-rate (BER) in various channel conditions and interference environments. We provide a framework that encompasses the design and evaluation of HSDPA systems and gives key insight into implementation issues in order to meet the conformance requirements","PeriodicalId":217349,"journal":{"name":"2006 European Conference on Wireless Technology","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124242385","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
UWB Interference Mitigation Using Multi-carrier Templates 使用多载波模板缓解UWB干扰
2006 European Conference on Wireless Technology Pub Date : 2006-09-01 DOI: 10.1109/ECWT.2006.280448
M. Lakshmanan, H. Nikookar
{"title":"UWB Interference Mitigation Using Multi-carrier Templates","authors":"M. Lakshmanan, H. Nikookar","doi":"10.1109/ECWT.2006.280448","DOIUrl":"https://doi.org/10.1109/ECWT.2006.280448","url":null,"abstract":"Performance degradation of the UWB communication system due to interference from other services is a major issue. To reduce the effect of interference, the usage of modified template in the UWB transceiver and its multi-carrier representation has recently been reported. In this paper we extend the study to include the impact of waveform and its representation with multi-carrier templates, at both transmitter and receiver ends on the system performance in the presence of wideband and ultra wideband interference. The novelty of this work relates to the consideration of different modulation schemes, pulse waveforms, detection techniques as well as representation of symbols with multiple pulses and their effects, on the UWB system performance","PeriodicalId":217349,"journal":{"name":"2006 European Conference on Wireless Technology","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116936807","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
Performance Evaluation for WLAN and UWB Using Radio over Fibre 无线局域网和超宽带光纤无线性能评估
2006 European Conference on Wireless Technology Pub Date : 2006-09-01 DOI: 10.1109/ECWT.2006.280456
F. Tabatabai, H. Al-Raweshidy
{"title":"Performance Evaluation for WLAN and UWB Using Radio over Fibre","authors":"F. Tabatabai, H. Al-Raweshidy","doi":"10.1109/ECWT.2006.280456","DOIUrl":"https://doi.org/10.1109/ECWT.2006.280456","url":null,"abstract":"This article discusses the effects of using fiber in conjunction with wireless communications to distribute RF signal to achieve high coverage in building uses ultra wide band (UWB) combined with orthogonal frequency division multiplexing (OFDM) for wireless LAN (WLAN) to have both scheme in indoors with better performance. And also investigates the performance of RoF for the distribution of Wireless LAN and UWB signals using CW laser in multimode fiber for in building applications","PeriodicalId":217349,"journal":{"name":"2006 European Conference on Wireless Technology","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129572061","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: 15
A 3.6 dB NF, 6 GHz band CMOS LNA with 3.6 mW power consumption 3.6 dB NF, 6 GHz频带CMOS LNA, 3.6 mW功耗
2006 European Conference on Wireless Technology Pub Date : 2006-09-01 DOI: 10.1109/ECWT.2006.280436
D. Pienkowski, V. Subramanian, G. Boeck
{"title":"A 3.6 dB NF, 6 GHz band CMOS LNA with 3.6 mW power consumption","authors":"D. Pienkowski, V. Subramanian, G. Boeck","doi":"10.1109/ECWT.2006.280436","DOIUrl":"https://doi.org/10.1109/ECWT.2006.280436","url":null,"abstract":"This work presents a fully integrated 6 GHz LNA designed using 0.12 mum IBM CMOS technology. The amplifier consumes only 3.6 mW dc power with 1.2 V supply voltage, and features a 11 dB power gain and 3.6 dB noise figure at the frequency of 6 GHz. Additionally, it achieves -11 dBm of input referred 1 dB compression point and -0.5 dBm of IIP3. At the same time input and output matching are better than -15 and -10 dB, respectively. It is shown that capacitance connected between the gate and ground of the common source transistor can be used for improving the performance of the LNA","PeriodicalId":217349,"journal":{"name":"2006 European Conference on Wireless Technology","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125491515","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
Absorption and Shielding Effect of Electromagnetic Wave at GHz Frequency by Multi-walled Carbon Nanotube/Polymer Composites 多壁碳纳米管/聚合物复合材料对GHz频段电磁波的吸收和屏蔽效应
2006 European Conference on Wireless Technology Pub Date : 2006-09-01 DOI: 10.1109/ECWT.2006.280494
K. Umishita, T. Okubo, Nakamura Takuya, O. Hashimoto
{"title":"Absorption and Shielding Effect of Electromagnetic Wave at GHz Frequency by Multi-walled Carbon Nanotube/Polymer Composites","authors":"K. Umishita, T. Okubo, Nakamura Takuya, O. Hashimoto","doi":"10.1109/ECWT.2006.280494","DOIUrl":"https://doi.org/10.1109/ECWT.2006.280494","url":null,"abstract":"The complex permittivity at 5.8 GHz of the composites of epoxy resin with multi-walled carbon nanotubes (MWCNTs) with their 20-70 nm diameters and 10-20 mum lengths at the concentration of 0.1-0.5% in weight was measured using a waveguide in order to develop the electromagnetic wave absorber (EMA) in the GHz frequency region. The EM absorbing efficiency was the highest at the MWCNT concentration of 0.2%, although the electric resistivity of the composite decreased and the electromagnetic interference shielding efficiency at 1-18 GHz increased with concentration of MWCNT over 0.5%. Such was observed even in various polymers including polycarbonate, polyacetal, polystyrene, acrylonitrile-butadiene-styrene copolymer, polymethylmethacrylate, and poly-etheretherketone","PeriodicalId":217349,"journal":{"name":"2006 European Conference on Wireless Technology","volume":"177 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133289336","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
Providing enhanced QoS differentiation to customers using geographic load balancing 使用地理负载平衡为客户提供增强的QoS差异化
2006 European Conference on Wireless Technology Pub Date : 2006-09-01 DOI: 10.1109/ECWT.2006.280458
P. Jiang, J. Bigham, Jiayi Wu
{"title":"Providing enhanced QoS differentiation to customers using geographic load balancing","authors":"P. Jiang, J. Bigham, Jiayi Wu","doi":"10.1109/ECWT.2006.280458","DOIUrl":"https://doi.org/10.1109/ECWT.2006.280458","url":null,"abstract":"This paper extends recent developments in geographic load balancing techniques using semi-smart antennas for cellular mobile communication systems by investigating the potential to provide enhanced QoS to realistic 3G services traffic classes and also to provide user prioritization even in situations where non uniform demand occurs over the network. Traditional cellular CAC systems have limited capability to rectify what turns out to be poor decisions apart from simply dropping connections. With cooperative geographic load balancing, if a base station cannot provide the desired service, adjacent base stations adjust their coverage to carry some of the traffic so that further calls, and in particular high priority calls can be accepted without having to drop existing connections; thus mitigating poor decisions. Enhancement of system capacity has been demonstrated in previous work to establish the optimal wireless radiation coverage shapes over a cellular network in real time and for both uplink and downlink in WCDMA and other wireless networks. The results presented show that load balancing approach can provides capacity gains and also provide good QoS discrimination in the uplink and downlink. The algorithm described can be adapted to different wireless technologies and to different kinds of adaptive antenna; from inexpensive semi-smart systems to fully adaptive systems","PeriodicalId":217349,"journal":{"name":"2006 European Conference on Wireless Technology","volume":"257 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131994632","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
A Novel Application of LDPC-Based Decoder for WiMAX Dual-mode Inner Encoder 基于ldpc的解码器在WiMAX双模内编码器中的新应用
2006 European Conference on Wireless Technology Pub Date : 2006-09-01 DOI: 10.1109/ECWT.2006.280464
L.-H. Lin, K.-A. Wen
{"title":"A Novel Application of LDPC-Based Decoder for WiMAX Dual-mode Inner Encoder","authors":"L.-H. Lin, K.-A. Wen","doi":"10.1109/ECWT.2006.280464","DOIUrl":"https://doi.org/10.1109/ECWT.2006.280464","url":null,"abstract":"LDPC codes have recently received a lot of attention by their excellent error-correcting capability and have been adopted as an optional error correct coding scheme in WiMAX (802.16e) standard for mobility. In order to the low-complexity SOC (system-on-a-chip) design and multi-mode transmitter compatible, we proposed a novel application of LDPC decoder to substitute Viterbi decoder for convolutional encoder. The main character presented in this study is that the general two-decoder structure is replaced by one decoder. Our results indicate that the proposed scheme processes nice performance for mobile WiMAX system","PeriodicalId":217349,"journal":{"name":"2006 European Conference on Wireless Technology","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132130166","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
Front-End Module Design for Satellite DMB Receiver 卫星DMB接收机前端模块设计
2006 European Conference on Wireless Technology Pub Date : 2006-09-01 DOI: 10.1109/ECWT.2006.280499
Joo-Seong Jeon
{"title":"Front-End Module Design for Satellite DMB Receiver","authors":"Joo-Seong Jeon","doi":"10.1109/ECWT.2006.280499","DOIUrl":"https://doi.org/10.1109/ECWT.2006.280499","url":null,"abstract":"This paper describes a design for a front-end module to receive satellite DMB service. The front-end module designed in this study is a planar structure that is easy to install on the rooftop of a car and is compact in size. In addition, it can be applied to certain commercial models because it has low noise and high gain characteristics. The impedance bandwidth of antenna is 7.04 % (186 MHz), and the axial ratio is below 2 dB as good properties for the bandwidth of 25 MHz which is a DMB service band. Also, it had a broad radiation beamwidth of 114deg in H-plane and 112.16deg in E-plane. From the results of the field test of satellite DMB reception for the front-end module, it demonstrated excellent picture quality without any distortions from road environments under high speed driving conditions","PeriodicalId":217349,"journal":{"name":"2006 European Conference on Wireless Technology","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133045508","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
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