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2012 IEEE International Conference on Ultra-Wideband最新文献

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Through-wall localization with UWB sensor network 超宽带传感器网络的穿壁定位
2012 IEEE International Conference on Ultra-Wideband Pub Date : 2012-11-12 DOI: 10.1109/ICUWB.2012.6340436
Cheng Chen, Hong Ding, Xiaotao Huang, Xiangyang Li, Jibing Yuan
{"title":"Through-wall localization with UWB sensor network","authors":"Cheng Chen, Hong Ding, Xiaotao Huang, Xiangyang Li, Jibing Yuan","doi":"10.1109/ICUWB.2012.6340436","DOIUrl":"https://doi.org/10.1109/ICUWB.2012.6340436","url":null,"abstract":"A positioning approach based on through-wall propagation model is proposed to mitigate the non-line of sight (NLOS) error and improve the performance of Ultra-Wideband (UWB) through-wall localization. In NLOS conditions, there exist biases in the range differences determined by time difference of arrival (TDOA) measurements. The error due to wall effect, which is dominant error in position estimation, can be mitigated with the proposed approach. The numerical simulations verify the effectiveness of the improvement of performance provided by the proposed approach. The simulation results also demonstrate the through-wall propagation model used in the approach is effective.","PeriodicalId":260071,"journal":{"name":"2012 IEEE International Conference on Ultra-Wideband","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130525907","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
Directive, electrically-small UWB antennas 指令，电小型超宽带天线
2012 IEEE International Conference on Ultra-Wideband Pub Date : 2012-11-12 DOI: 10.1109/ICUWB.2012.6340482
H. Schantz
{"title":"Directive, electrically-small UWB antennas","authors":"H. Schantz","doi":"10.1109/ICUWB.2012.6340482","DOIUrl":"https://doi.org/10.1109/ICUWB.2012.6340482","url":null,"abstract":"This paper presents a variety of directive, electrically-small ultra-wideband (UWB) antenna designs. Employing a multipole-synthesis design methodology yields stable patterns with directivity of +4.7dBi or more across multiple decade bandwidths. The antenna may be thought of as an electrically-short, resistively-terminated transmission line. Open field testing of a 3m prototype antenna yields confirmation of NEC-derived performance predictions. The proposed antenna design is particularly well-suited for use as a receive antenna at HF frequencies or lower, where antenna loss cancels out high levels of atmospheric noise without impacting received signal-to-noise ratio (SNR).","PeriodicalId":260071,"journal":{"name":"2012 IEEE International Conference on Ultra-Wideband","volume":"123 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134576557","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
A multiband slotted Bowtie antenna for stroke detection 用于中风检测的多波段开槽领结天线
2012 IEEE International Conference on Ultra-Wideband Pub Date : 2012-11-12 DOI: 10.1109/ICUWB.2012.6340477
Xuyang Li, M. Jalilvand, Jijing Yan, L. Zwirello, T. Zwick
{"title":"A multiband slotted Bowtie antenna for stroke detection","authors":"Xuyang Li, M. Jalilvand, Jijing Yan, L. Zwirello, T. Zwick","doi":"10.1109/ICUWB.2012.6340477","DOIUrl":"https://doi.org/10.1109/ICUWB.2012.6340477","url":null,"abstract":"For stroke detection, low frequencies are required due to the increasing signal attenuation in human tissues with the frequency. In this paper a multiband slotted Bowtie antenna is proposed, which can be operated directly on or near to the skin. The antenna has a very small size of 26×34 mm2. Moreover, the operating bands are from 0.5 to 0.7 GHz and 1.3 to 4 GHz. The antenna is optimized in the simulation and verified through the measurements. The results show that the antenna provides a high potential for medical diagnostics such as human stroke detection.","PeriodicalId":260071,"journal":{"name":"2012 IEEE International Conference on Ultra-Wideband","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126615864","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
Adaptive synchronization and integration region optimization for energy detection IR-UWB receivers 能量探测红外-超宽带接收机的自适应同步与积分区域优化
2012 IEEE International Conference on Ultra-Wideband Pub Date : 2012-11-12 DOI: 10.1109/ICUWB.2012.6340502
Qin Zhou, Z. Zou, H. Tenhunen, Lirong Zheng
{"title":"Adaptive synchronization and integration region optimization for energy detection IR-UWB receivers","authors":"Qin Zhou, Z. Zou, H. Tenhunen, Lirong Zheng","doi":"10.1109/ICUWB.2012.6340502","DOIUrl":"https://doi.org/10.1109/ICUWB.2012.6340502","url":null,"abstract":"Non-coherent energy detection (ED) IR-UWB receivers exhibit strong advantages in low data rate, low power and low cost applications such as RFID and Wireless Sensor Networks. However, the performance of ED receivers is usually suffered from the noise enhancement due to the large time-bandwidth product. The integration region of the receiver integrator significantly affects the bit error rate (BER) performance. This paper presents a method of synchronization and estimating the optimal integration region (i.e., the starting point and the length of the integration window), which is based on the analysis of received signal energy capture and combined with a time of arrival (TOA) estimation. The proposed scheme is based on the symbol rate sampling and does not require a priori information about the channel delay profile. Besides, it can adapt to various indoor channel environments. The algorithm has a moderate accuracy but a very low complexity and fast synchronization speed. The validity of the proposed approach is demonstrated by numerical results using IEEE 802.15.4a channel models.","PeriodicalId":260071,"journal":{"name":"2012 IEEE International Conference on Ultra-Wideband","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121642986","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
Time of arrival based localization of UWB transmitters buried in lossy dielectric media 埋在有耗介质中的UWB发射机基于到达时间的定位
2012 IEEE International Conference on Ultra-Wideband Pub Date : 2012-11-12 DOI: 10.1109/ICUWB.2012.6340456
Michael Mirbach, W. Menzel
{"title":"Time of arrival based localization of UWB transmitters buried in lossy dielectric media","authors":"Michael Mirbach, W. Menzel","doi":"10.1109/ICUWB.2012.6340456","DOIUrl":"https://doi.org/10.1109/ICUWB.2012.6340456","url":null,"abstract":"An algorithm for subsurface localization of UWB transmitters in homogeneous dielectric media is presented. In combination with surface estimation algorithms for UWB pulse radars it allows localization behind arbitrarily shaped medium surfaces. We propose a localization system operating in the FCC UWB frequency range from 3.1 to 10.6 GHz consisting of a transmitter optimized for radiation in high permittivity media and of external radar sensors. The sensors scan the dielectric surface and also measure the time of arrival (ToA) of the signal transmitted from inside of the medium. The transmitter location is estimated by combining the measured ToA data with the knowledge about shape and position of the medium. Therefore a method to calculate wavefront refraction on the medium boundary based on the Huygens-Fresnel principle is derived. The performance of the proposed localization method is verified using electro-magnetic field simulations and measurements. The measurements have been performed with the transmitter placed in high permittivity tissue-mimicking liquid. The localization results are compared with the manually measured transmitter position showing a good agreement.","PeriodicalId":260071,"journal":{"name":"2012 IEEE International Conference on Ultra-Wideband","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115640291","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
An 8–18 GHz Low noise amplifier design in 0.18μm CMOS technology 基于0.18μm CMOS技术的8-18 GHz低噪声放大器设计
2012 IEEE International Conference on Ultra-Wideband Pub Date : 2012-11-12 DOI: 10.1109/ICUWB.2012.6340425
P. Jamshidi, S. Naseh
{"title":"An 8–18 GHz Low noise amplifier design in 0.18μm CMOS technology","authors":"P. Jamshidi, S. Naseh","doi":"10.1109/ICUWB.2012.6340425","DOIUrl":"https://doi.org/10.1109/ICUWB.2012.6340425","url":null,"abstract":"A new method to achieve wideband input impedance matching and small die area for current-reused cascade low noise amplifier (LNA) is presented. The proposed circuit is designed and simulated at X/Ku-Band using the TSMC 0.18μm CMOS process. The wideband input impedance matching was achieved by taking advantage of the resistive shunt-shunt feedback and source-degeneration topology, but in the proposed circuit the resistive feedback signal is taken from different node in contrast to the traditional cascade LNA. By utilizing a center-tapped inductor (CTI) at the inter-stage network of the LNA a high gain is obtained over the entire bandwidth (BW) with small die area. Analytical expressions have been derived for the input impedance matching of the circuit. Using the proposed technique, power gain of 17±.5dB and noise figure between 2.8-4dB was achieved in a bandwidth of 8-18GHz. The input and output return losses are better than -10dB in the frequency band from 8GHz up to 18GHz.","PeriodicalId":260071,"journal":{"name":"2012 IEEE International Conference on Ultra-Wideband","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117287849","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 Bayesian nonparametric approach to tumor detection using UWB imaging 用超宽带成像进行肿瘤检测的贝叶斯非参数方法
2012 IEEE International Conference on Ultra-Wideband Pub Date : 2012-11-12 DOI: 10.1109/ICUWB.2012.6340410
Y. Nijsure, Wee Peng Tay, E. Gunawan, Joshua Lai Chong Yue
{"title":"A Bayesian nonparametric approach to tumor detection using UWB imaging","authors":"Y. Nijsure, Wee Peng Tay, E. Gunawan, Joshua Lai Chong Yue","doi":"10.1109/ICUWB.2012.6340410","DOIUrl":"https://doi.org/10.1109/ICUWB.2012.6340410","url":null,"abstract":"We develop a tumor detection and discrimination algorithm for Ultra-Wideband (UWB) microwave imaging of breast cancer based on a Bayesian nonparametric approach. We model the UWB backscattered signal as a mixture of distinct scatterer contributions, and use a Dirichlet Process mixture model (DPMM) to describe the amplitudes and delays of the backscattered returns. Because of the unbounded complexity afforded by the DPMM, model under-fitting is avoided and parameters like the clutter covariance matrix in other commonly used approaches, need not be estimated. The DPMM allows us to perform discrimination when there are multiple tumor and clutter sources that present as extended radar targets. After performing discrimination, we distinguish the tumor sources from other clutter sources using a generalized likelihood ratio test (GLRT). We perform experiments on a breast phantom with realistic dielectric contrast ratios, and compare the performance of our algorithm with a direct GLRT approach. Our numerical results show performance improvement in terms of tumor detection probability and Signal to Interference and Noise Ratio (SINR) gain of approximately 2.2 dB at a probability of detection of 0.9 over the GLRT method.","PeriodicalId":260071,"journal":{"name":"2012 IEEE International Conference on Ultra-Wideband","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126763945","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
Improvement of wireless channel performance using MIMO-UWB system in underground mine gallery 利用MIMO-UWB系统改善井下巷道无线信道性能
2012 IEEE International Conference on Ultra-Wideband Pub Date : 2012-11-12 DOI: 10.1109/ICUWB.2012.6340394
I. Mabrouk, L. Talbi, M. Nedil
{"title":"Improvement of wireless channel performance using MIMO-UWB system in underground mine gallery","authors":"I. Mabrouk, L. Talbi, M. Nedil","doi":"10.1109/ICUWB.2012.6340394","DOIUrl":"https://doi.org/10.1109/ICUWB.2012.6340394","url":null,"abstract":"In this paper, the incorporation of multiple-input multiple-output (MIMO) with ultra-wideband (UWB) technology is discussed. 2 × 2 MIMO-UWB measurement campaign in the 3-10 GHz bandwidth is conducted and the transmission performance in Line Of Sight (LOS) environment is evaluated. The aim of this work is to analyze the effect of antenna element configuration on MIMO-UWB system working in underground mine environment. To achieve this, many parameters such as the channel correlation, and the system capacity are analyzed. The obtained results suggest that MIMO-UWB systems are promising for high data rate transmission in harsh RF environments.","PeriodicalId":260071,"journal":{"name":"2012 IEEE International Conference on Ultra-Wideband","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125197755","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
An integrated switched injection-locked oscillator for pulsed angle modulated ultra wideband communication and radar systems 用于脉冲角调制超宽带通信和雷达系统的集成开关注入锁定振荡器
2012 IEEE International Conference on Ultra-Wideband Pub Date : 2012-11-12 DOI: 10.1109/ICUWB.2012.6340458
A. Esswein, G. Fischer, R. Weigel, T. Ussmüller, C. Carlowitz, M. Vossiek
{"title":"An integrated switched injection-locked oscillator for pulsed angle modulated ultra wideband communication and radar systems","authors":"A. Esswein, G. Fischer, R. Weigel, T. Ussmüller, C. Carlowitz, M. Vossiek","doi":"10.1109/ICUWB.2012.6340458","DOIUrl":"https://doi.org/10.1109/ICUWB.2012.6340458","url":null,"abstract":"This paper describes an integrated switched injection-locked oscillator (SILO) circuit for use in pulsed angular modulated ultra wideband communication and radar systems. The circuit consists of two active baluns for single-ended to differential and differential to single-ended conversion, a Schmitt-trigger with modified current mirror load for current peak generation and a simple cross-coupled oscillator for signal generation. It has an externally controllable pulse repetition rate and a pulse duration of approx. 1ns. During operation it consumes 33mA at 3.3V supply voltage, while generating a 370 mVpp signal. The generated signal has a 10dB-bandwidth of over 2GHz at 7.5 GHz center frequency. Measurement results with an external baseband generator are shown.","PeriodicalId":260071,"journal":{"name":"2012 IEEE International Conference on Ultra-Wideband","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126150488","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
Indirect path detection of passive localization based on wireless propagation measurements 基于无线传播测量的被动定位间接路径检测
2012 IEEE International Conference on Ultra-Wideband Pub Date : 2012-11-12 DOI: 10.1109/ICUWB.2012.6340478
Junyang Shen, A. Molisch
{"title":"Indirect path detection of passive localization based on wireless propagation measurements","authors":"Junyang Shen, A. Molisch","doi":"10.1109/ICUWB.2012.6340478","DOIUrl":"https://doi.org/10.1109/ICUWB.2012.6340478","url":null,"abstract":"An important prerequisite for precision localization is to discern \"direct paths\" (DP), i.e., paths that suffer a single reflection process on their way from the transmitter to the receiver, from indirect paths (IPs). This paper studies how to distinguish between DPs and IPs purely based on measurements of radio propagation parameters, namely the time of arrival (TOA), direction of departure (DOD), and direction of arrival (DOA). Any combination of two of those parameters allows the computation of a reflection point. We establish rules to decide how large the deviations between these points might be to consider a path an IP. Several different decision rules are discussed and compared. The paper derives closed-form equations for these decision criteria and the resulting performance. Simulation results show that under common localization scenarios employing ultrawideband signals, the proposed algorithms can effectively detect IPs and significantly improve localization accuracy.","PeriodicalId":260071,"journal":{"name":"2012 IEEE International Conference on Ultra-Wideband","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126281821","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
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