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2005 IEEE International Conference on Ultra-Wideband最新文献

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An exact computable formula for the average bit-error probability of the IEEE 802.15.3a UWB channel model IEEE 802.15.3a超宽带信道模型平均误码概率的精确计算公式
2005 IEEE International Conference on Ultra-Wideband Pub Date : 2005-09-05 DOI: 10.1109/ICU.2005.1569973
J. A. Gubner, Kei Hao
{"title":"An exact computable formula for the average bit-error probability of the IEEE 802.15.3a UWB channel model","authors":"J. A. Gubner, Kei Hao","doi":"10.1109/ICU.2005.1569973","DOIUrl":"https://doi.org/10.1109/ICU.2005.1569973","url":null,"abstract":"The IEEE 802.15.3a standards body has developed a modification of the Saleh-Valenzuela multipath channel model as the accepted model for ultra-wideband channel investigations. Although it is straightforward to simulate channel realizations according to the model, doing so many thousands of times in order to estimate bit-error probabilities is computationally intensive. To overcome this burden, this paper derives an exact analytical formula for the average bit-error probability that can be quickly evaluated using Gaussian quadrature.","PeriodicalId":105819,"journal":{"name":"2005 IEEE International Conference on Ultra-Wideband","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115676866","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: 17
Accuracy of a commercial UWB 3D location/tracking system and its impact on LT application scenarios 商用超宽带3D定位/跟踪系统的精度及其对LT应用场景的影响
2005 IEEE International Conference on Ultra-Wideband Pub Date : 2005-09-05 DOI: 10.1109/ICU.2005.1570056
V. Schwarz, A. Huber, M. Tuchler
{"title":"Accuracy of a commercial UWB 3D location/tracking system and its impact on LT application scenarios","authors":"V. Schwarz, A. Huber, M. Tuchler","doi":"10.1109/ICU.2005.1570056","DOIUrl":"https://doi.org/10.1109/ICU.2005.1570056","url":null,"abstract":"A newly available commercial ultra-wideband 3D location and tracking system has been characterized in terms of measurement accuracy and disturbance of the line-of-sight path between the located tag and the receiving sensors. While the standard deviation of a large number of position readings is 15 cm or better, bias on the order of meters often occurs that we address to reflections at metal walls. A human torso or hand blocking the line of sight prevents location. The results measured in our class room environment indicate that the majority of presumed applications for UWB location and tracking are not yet feasible with available LT technology.","PeriodicalId":105819,"journal":{"name":"2005 IEEE International Conference on Ultra-Wideband","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114120189","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: 29
Conformal double exponentially tapered slot antennas (DETSA) for UWB communications systems' front-ends 用于超宽带通信系统前端的保形双指数锥形槽天线(DETSA)
2005 IEEE International Conference on Ultra-Wideband Pub Date : 2005-09-05 DOI: 10.1109/ICU.2005.1569983
S. Nikolaou, L. Marcaccioli, G. Ponchak, J. Papapolymerou, M. Tentzeris
{"title":"Conformal double exponentially tapered slot antennas (DETSA) for UWB communications systems' front-ends","authors":"S. Nikolaou, L. Marcaccioli, G. Ponchak, J. Papapolymerou, M. Tentzeris","doi":"10.1109/ICU.2005.1569983","DOIUrl":"https://doi.org/10.1109/ICU.2005.1569983","url":null,"abstract":"This paper discusses the use of a double exponentially slot antenna (DETSA) fabricated on flexible liquid crystal polymer (LCP) as a candidate for ultra wide band (UWB) communications systems. The features of the antenna and the effect of the antenna on a transmitted pulse are investigated. Return loss and E and H plane radiation pattern measurements are presented. The return loss remains below -10 dB and the shape of the radiation pattern remains fairly constant in the whole UWB range (3.1-10.6 GHz). The main lobe characteristic of the radiation pattern remains stable even when the antenna is significantly conformed. The major effect of the conformation is an increase in the cross polarization component amplitude. The system: transmitter DETSA-channel-receiver DETSA is measured in frequency domain and shows that the antenna adds very little distortion on a transmitted pulse. The distortion remains small even when both transmitter and receiver antennas are folded, although it increases slightly.","PeriodicalId":105819,"journal":{"name":"2005 IEEE International Conference on Ultra-Wideband","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114309918","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: 19
Small broadband receiving antenna using a Fabry-Perot etalon 使用法布里-珀罗标准子的小型宽带接收天线
2005 IEEE International Conference on Ultra-Wideband Pub Date : 2005-09-05 DOI: 10.1109/ICU.2005.1569982
G. Meyer, A. Wittneben
{"title":"Small broadband receiving antenna using a Fabry-Perot etalon","authors":"G. Meyer, A. Wittneben","doi":"10.1109/ICU.2005.1569982","DOIUrl":"https://doi.org/10.1109/ICU.2005.1569982","url":null,"abstract":"A novel concept for a broadband electric-field (E-field) receiving antenna is proposed. The reactive near field, induced by an impinging E-field, of a very short, short-circuited dipole is picked-up with the aid of an electro-optical modulator. The modulator is designed as a Fabry-Perot etalon. The laser light guided in the etalon is modulated proportionally to the near field of the dipole. The advantage of the etalon is to considerably increase the sensitivity of the antenna compared to known electro-optic probes. It is shown analytically for an ellipsoidal dipole and numerically for a cylindrical dipole, that only the quasi electrostatic terms of the dipole field are relevant. Important is the optimal choice of the material of the modulator. Since the linear electro-optical effect is used, best results are achieved if the index ellipsoid of the material parameters does not rotate under the influence of an external field but only varies its size. Such behaviour is found in materials as e.g. LiNbO/sub 3/ and poled polymers. Because of reflections, a second parameter of concern is the permittivity of the modulator base material. Polymers are the most promising materials known today for this type of antennas. The proposed antenna may either be used as broadband E-field probe or receiving antenna. It features low coupling because of the small size and the fibre optic feeding, low signal attenuation in the feeding and large bandwidth. This type of antennas is therefore optimally suited for distributed UWB antenna systems where only one way wireless communication is necessary.","PeriodicalId":105819,"journal":{"name":"2005 IEEE International Conference on Ultra-Wideband","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115232441","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 real-time TAM-BP imaging algorithm for subsurface imaging radar 用于地下成像雷达的实时TAM-BP成像算法
2005 IEEE International Conference on Ultra-Wideband Pub Date : 2005-09-05 DOI: 10.1109/ICU.2005.1570061
L. Wentai, Huang Chunlin, Su Yi
{"title":"A real-time TAM-BP imaging algorithm for subsurface imaging radar","authors":"L. Wentai, Huang Chunlin, Su Yi","doi":"10.1109/ICU.2005.1570061","DOIUrl":"https://doi.org/10.1109/ICU.2005.1570061","url":null,"abstract":"A real-time recursive time-delay and amplitude modified back projection (TAM-BP) imaging algorithm is presented in this paper. Real time imaging is an intense demand but a challenging task in subsurface imaging radar (SIR)'s application. Based on 'delay-sum' operation in time domain, TAM-BP imaging algorithm can precisely focus scattering intensity and obtain high quality subsurface profile. But its heavy computation load restricts its application in SIR's real-time processing. After analyzing TAM-BP imaging procedure, a recursive model of this imaging algorithm is established and real-time TAM-BP imaging algorithm is educed subsequently. The computation complexity of both non-real-time TAM-BP imaging algorithm and real-time TAM-BP imaging algorithm are compared with experimental data.","PeriodicalId":105819,"journal":{"name":"2005 IEEE International Conference on Ultra-Wideband","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115609905","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 CMOS ultra-wideband LNA utilizing a frequency-controlled feedback technique 一种利用频率控制反馈技术的CMOS超宽带LNA
2005 IEEE International Conference on Ultra-Wideband Pub Date : 2005-09-05 DOI: 10.1109/ICU.2005.1570044
Y. Soliman, L. MacEachern, L. Roy
{"title":"A CMOS ultra-wideband LNA utilizing a frequency-controlled feedback technique","authors":"Y. Soliman, L. MacEachern, L. Roy","doi":"10.1109/ICU.2005.1570044","DOIUrl":"https://doi.org/10.1109/ICU.2005.1570044","url":null,"abstract":"A 3.1-10.6 GHz, single-stage, low noise amplifier employing a frequency dependant feedback network is reported. The amplifier was implemented in a 0.18 /spl mu/m CMOS process, and attains a gain of 8 dB, input matching of -13 dB, and a minimum spot noise figure of 3.5 dB (4.4 dB average). The amplifier exploits a combination of negative and positive feedback to attain a flat gain across the entire bandwidth with an input-referred 1 dB compression at -2.48 dBm. An ultrawideband noise and power matching technique utilizing frequency dependent Miller multiplication factors is presented. This is believed to be the first application of this technique within an ultrawideband low noise amplifier.","PeriodicalId":105819,"journal":{"name":"2005 IEEE International Conference on Ultra-Wideband","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127389301","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
Dielectric wedge antenna for UWB applications 用于超宽带应用的介电楔形天线
2005 IEEE International Conference on Ultra-Wideband Pub Date : 2005-09-05 DOI: 10.1109/ICU.2005.1569981
A. Yarovoy, J. Zijderveld, A. Schukin, I. Kaploun, L. Ligthart
{"title":"Dielectric wedge antenna for UWB applications","authors":"A. Yarovoy, J. Zijderveld, A. Schukin, I. Kaploun, L. Ligthart","doi":"10.1109/ICU.2005.1569981","DOIUrl":"https://doi.org/10.1109/ICU.2005.1569981","url":null,"abstract":"The dielectric wedge antenna has been modified for radiation in free space. While the original antenna has been developed and built for radiation into the ground at low frequencies, the modified antenna has been designed for modified for radiation of ultra-short pulses with spectrum up to 11 GHz. A modification of the antenna has been verified experimentally. It has been shown that the lower cut-off frequency of the antenna is of about 2 GHz.","PeriodicalId":105819,"journal":{"name":"2005 IEEE International Conference on Ultra-Wideband","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124248103","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
Code constructions for non-coherent on-off ultra-wideband systems 非相干开-关超宽带系统的代码结构
2005 IEEE International Conference on Ultra-Wideband Pub Date : 2005-09-05 DOI: 10.1109/ICU.2005.1569951
Y. Souilmi, R. Knopp, G. Caire
{"title":"Code constructions for non-coherent on-off ultra-wideband systems","authors":"Y. Souilmi, R. Knopp, G. Caire","doi":"10.1109/ICU.2005.1569951","DOIUrl":"https://doi.org/10.1109/ICU.2005.1569951","url":null,"abstract":"We consider coding schemes for non-coherent on-off signaling over ultra-wideband channels. Different code constructions are proposed and optimized using an exit chart based methodology. The performance of proposed codes is then measured using both an exit chart based analysis and Monte Carlo simulations. The optimized codes are shown to perform close to information-theoretic limits.","PeriodicalId":105819,"journal":{"name":"2005 IEEE International Conference on Ultra-Wideband","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124745060","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
Role of pulses in ultra wideband systems 脉冲在超宽带系统中的作用
2005 IEEE International Conference on Ultra-Wideband Pub Date : 2005-09-05 DOI: 10.1109/ICU.2005.1570050
Jian Zhang, T. Abhayapala, R. Kennedy
{"title":"Role of pulses in ultra wideband systems","authors":"Jian Zhang, T. Abhayapala, R. Kennedy","doi":"10.1109/ICU.2005.1570050","DOIUrl":"https://doi.org/10.1109/ICU.2005.1570050","url":null,"abstract":"UWB pulses are the unique labels of UWB systems. This paper investigates the role of pulse systematically and highlights the central position of the pulse in UWB systems. Four system properties related closely to the pulse are discussed: propagation properties, capacity, interference to existing systems and performance of correlation receivers. The properties of pulses which function directly on every aspect are highlighted. Novel viewpoint is provided for the evaluation of capacity and interference. Suggestions are given on the pulse design, with emphasis on the whole system performance.","PeriodicalId":105819,"journal":{"name":"2005 IEEE International Conference on Ultra-Wideband","volume":"45 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131578669","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: 25
Lower bounds for ranging accuracy with multi band OFDM and direct sequence UWB signals 多波段OFDM和直接序列UWB信号测距精度的下界
2005 IEEE International Conference on Ultra-Wideband Pub Date : 2005-09-05 DOI: 10.1109/ICU.2005.1570003
R. Cardinali, L. D. De Nardis, P. Lombardo, M. Di Benedetto
{"title":"Lower bounds for ranging accuracy with multi band OFDM and direct sequence UWB signals","authors":"R. Cardinali, L. D. De Nardis, P. Lombardo, M. Di Benedetto","doi":"10.1109/ICU.2005.1570003","DOIUrl":"https://doi.org/10.1109/ICU.2005.1570003","url":null,"abstract":"The definition of ultra wide band (UWB) signals set by the Federal Communications Commissions (FCC) opened the way to both impulse and non-impulse UWB signal formats. This is reflected within the IEEE 802.15.3a TG, aiming at the definition of a standard for UWB-based high bit rate WPANs. The two main proposals considered in this group are in fact a multi band OFDM approach, based on the transmission of non-impulse OFDM signals combined with frequency hopping (FH), and the direct-sequence (DS) UWB approach, based on impulse radio transmission of UWB DS-coded pulses. In this paper we analyze the ranging capabilities of the two proposals by first determining the Cramer-Rao lower bound (CRLB) for the error in distance estimation using both an ideal channel model and a real channel model taking into account the effect of multipath. Next, we investigate the impact of receiver structure and synchronization sequences adopted in the two proposals on the ranging accuracy. Results show that synchronization sequences play a key role in determining the ranging accuracy. Although the DS-UWB signal is in general best suited for ranging, thanks to its larger bandwidth and its higher frequencies of operation, specific synchronization sequences may in fact lead to better ranging accuracy for the MB-OFDM signal.","PeriodicalId":105819,"journal":{"name":"2005 IEEE International Conference on Ultra-Wideband","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131665667","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
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