Pub Date : 2011-10-24DOI: 10.1109/ICUWB.2011.6058872
K. Ohno, M. Itami, T. Ikegami
This paper discusses the interfering signal detection technique for DAA (Detection And Avoidance) operation of an UWB (Ultra Wideband) systems. To detect the interfering signal, sub-band pulses of a multi-carrier type are prepared as template waveform in the detector. The received signal is correlated with the sub-band pulses and the correlation values are compared with the threshold value. The proposed detection technique is applied for the correlation detection that is often used for the demodulation scheme of the pulse-based UWB system. The DER (Detection Error Rate) and FAR (False Alarm Rate) performance are evaluated to show the effectiveness of the proposed interfering signal detection technique and the performances are compared with the ordinary scheme by using FFT. The optimum sub-band pulse width is also derived to be obtained better detection performance.
本文讨论了超宽带系统中DAA (detection And Avoidance)工作的干扰信号检测技术。为了检测干扰信号，在检测器中制备了多载波型的子带脉冲作为模板波形。将接收到的信号与子带脉冲进行相关，并将相关值与阈值进行比较。该检测技术适用于基于脉冲的超宽带系统解调方案中经常用到的相关检测。通过检测错误率(DER)和虚警率(FAR)性能的评估，证明了所提出的干扰信号检测技术的有效性，并通过FFT与普通方案进行了性能比较。为了获得更好的检测性能，还推导出了最佳子带脉宽。
{"title":"Interfering signal detection by using sub-band pulses of a multi-carrier template pulse for DAA operation","authors":"K. Ohno, M. Itami, T. Ikegami","doi":"10.1109/ICUWB.2011.6058872","DOIUrl":"https://doi.org/10.1109/ICUWB.2011.6058872","url":null,"abstract":"This paper discusses the interfering signal detection technique for DAA (Detection And Avoidance) operation of an UWB (Ultra Wideband) systems. To detect the interfering signal, sub-band pulses of a multi-carrier type are prepared as template waveform in the detector. The received signal is correlated with the sub-band pulses and the correlation values are compared with the threshold value. The proposed detection technique is applied for the correlation detection that is often used for the demodulation scheme of the pulse-based UWB system. The DER (Detection Error Rate) and FAR (False Alarm Rate) performance are evaluated to show the effectiveness of the proposed interfering signal detection technique and the performances are compared with the ordinary scheme by using FFT. The optimum sub-band pulse width is also derived to be obtained better detection performance.","PeriodicalId":143107,"journal":{"name":"2011 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115709596","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}
Pub Date : 2011-10-24DOI: 10.1109/ICUWB.2011.6058837
P. Almeida, H. Silva
The simultaneous distribution of multiband orthogonal frequency division multiplexing (MB-OFDM) ultra wideband (UWB) and millimeter-wave wireless personal area network (WPAN) signals over hybrid FTTH networks is evaluated, with a novel scheme for the optical transmitter. The optical transmitter proposed is optimized and transmission through standard single mode fiber is evaluated by simulation. All services can be delivered to the customer after 25 km fiber transmission.
{"title":"Distribution of MB-OFDM UWB and millimeter-wave WPAN signals on hybrid FTTH networks","authors":"P. Almeida, H. Silva","doi":"10.1109/ICUWB.2011.6058837","DOIUrl":"https://doi.org/10.1109/ICUWB.2011.6058837","url":null,"abstract":"The simultaneous distribution of multiband orthogonal frequency division multiplexing (MB-OFDM) ultra wideband (UWB) and millimeter-wave wireless personal area network (WPAN) signals over hybrid FTTH networks is evaluated, with a novel scheme for the optical transmitter. The optical transmitter proposed is optimized and transmission through standard single mode fiber is evaluated by simulation. All services can be delivered to the customer after 25 km fiber transmission.","PeriodicalId":143107,"journal":{"name":"2011 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123055143","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}
Pub Date : 2011-10-24DOI: 10.1109/ICUWB.2011.6058824
J. Osth, O. Owais, M. Karlsson, A. Serban, Shaofang Gong
The performance of two different six-port demodulator prototypes for the UWB band 6 to 8.5 GHz are presented. Both configurations allow for a simplified interface to amplifier and filter. In addition, one of the configurations also have odd-order harmonic suppression. Measurements show good modulation properties when a 16 quadrature amplitude modulation signal at 100 Msymbols/s is demodulated for both prototypes. The performance of the two prototypes are compared in terms of error vector magnitude, bit error rate, sensitivity and dynamic range.
{"title":"Performance evaluation of six-port receivers with simplified interface to amplifier and filter","authors":"J. Osth, O. Owais, M. Karlsson, A. Serban, Shaofang Gong","doi":"10.1109/ICUWB.2011.6058824","DOIUrl":"https://doi.org/10.1109/ICUWB.2011.6058824","url":null,"abstract":"The performance of two different six-port demodulator prototypes for the UWB band 6 to 8.5 GHz are presented. Both configurations allow for a simplified interface to amplifier and filter. In addition, one of the configurations also have odd-order harmonic suppression. Measurements show good modulation properties when a 16 quadrature amplitude modulation signal at 100 Msymbols/s is demodulated for both prototypes. The performance of the two prototypes are compared in terms of error vector magnitude, bit error rate, sensitivity and dynamic range.","PeriodicalId":143107,"journal":{"name":"2011 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120944609","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}
Pub Date : 2011-10-24DOI: 10.1109/ICUWB.2011.6058859
M. Baldi, F. Chiaraluce, B. Zanaj, Matteo Moretti
We discuss some theoretical models for vital signs monitoring by using a UWB radar. Focusing attention on the respiration and heartbeat signals, we show the impact of relevant parameters, like the sampling time interval, on the ability to extract the desired signal parameters from the waveforms elaborated at the receiver. The role of the UWB pulse shape is also highlighted. With reference to more refined methods based on signal correlation, we propose a variant that does not need the availability of a locally generated reference signal and achieves good resolution for the movement detection, while ensuring limited processing times.
{"title":"Analysis and simulation of algorithms for vital signs detection using UWB radars","authors":"M. Baldi, F. Chiaraluce, B. Zanaj, Matteo Moretti","doi":"10.1109/ICUWB.2011.6058859","DOIUrl":"https://doi.org/10.1109/ICUWB.2011.6058859","url":null,"abstract":"We discuss some theoretical models for vital signs monitoring by using a UWB radar. Focusing attention on the respiration and heartbeat signals, we show the impact of relevant parameters, like the sampling time interval, on the ability to extract the desired signal parameters from the waveforms elaborated at the receiver. The role of the UWB pulse shape is also highlighted. With reference to more refined methods based on signal correlation, we propose a variant that does not need the availability of a locally generated reference signal and achieves good resolution for the movement detection, while ensuring limited processing times.","PeriodicalId":143107,"journal":{"name":"2011 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126032023","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}
Pub Date : 2011-10-24DOI: 10.1109/ICUWB.2011.6058838
T. Thiasiriphet, J. Lindner
UWB has been well-known to be useful for localization and radar applications. The use of UWB signals can provide distance measurements with high accuracy, but a big challenge is caused by high attenuation and low signal-to-noise ratios as well as by stationary cluttering. The situation gets worse if a moving object must be tracked as is given in vital sign detection, a problem which is the background for this contribution. We propose an algorithm based on particle filtering for coping with these problems. It includes a movement model. The results show significant improvements compared to more conventional algorithms.
{"title":"Particle filtering for UWB radar applications","authors":"T. Thiasiriphet, J. Lindner","doi":"10.1109/ICUWB.2011.6058838","DOIUrl":"https://doi.org/10.1109/ICUWB.2011.6058838","url":null,"abstract":"UWB has been well-known to be useful for localization and radar applications. The use of UWB signals can provide distance measurements with high accuracy, but a big challenge is caused by high attenuation and low signal-to-noise ratios as well as by stationary cluttering. The situation gets worse if a moving object must be tracked as is given in vital sign detection, a problem which is the background for this contribution. We propose an algorithm based on particle filtering for coping with these problems. It includes a movement model. The results show significant improvements compared to more conventional algorithms.","PeriodicalId":143107,"journal":{"name":"2011 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"201 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115569305","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}
Pub Date : 2011-10-24DOI: 10.1109/ICUWB.2011.6058860
R. Salman, I. Willms
This paper deals with problems related to the accurate identification and super-resolution Ultra-wideband (UWB) imaging of complex shaped 3D Objects. Current state of research solves the related upcoming challenges by just using inverse scattering algorithms and a 2D scan track (which provides only a limited perspective) or applying such algorithms only to objects with rather simple concave or convex contours. But a full perspective of the object needs circumnavigation to extract entirely all stereoscopic distributed contour pixels. The applicability of the known Range Points Migration (RPM) is investigated. In order to reconstruct a full 3D object contour, the so far planar scanning of the antennas is modified and extended to a spatial scanning including the z-axis. An experimental validation is carried out based on complex test objects with small shape variations relative to the used wavelength, an M-sequence Radar device and double ridged horn antennas.
{"title":"3D UWB radar super-resolution imaging for complex objects with discontinous wavefronts","authors":"R. Salman, I. Willms","doi":"10.1109/ICUWB.2011.6058860","DOIUrl":"https://doi.org/10.1109/ICUWB.2011.6058860","url":null,"abstract":"This paper deals with problems related to the accurate identification and super-resolution Ultra-wideband (UWB) imaging of complex shaped 3D Objects. Current state of research solves the related upcoming challenges by just using inverse scattering algorithms and a 2D scan track (which provides only a limited perspective) or applying such algorithms only to objects with rather simple concave or convex contours. But a full perspective of the object needs circumnavigation to extract entirely all stereoscopic distributed contour pixels. The applicability of the known Range Points Migration (RPM) is investigated. In order to reconstruct a full 3D object contour, the so far planar scanning of the antennas is modified and extended to a spatial scanning including the z-axis. An experimental validation is carried out based on complex test objects with small shape variations relative to the used wavelength, an M-sequence Radar device and double ridged horn antennas.","PeriodicalId":143107,"journal":{"name":"2011 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116552257","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}
Pub Date : 2011-10-24DOI: 10.1109/ICUWB.2011.6058908
J. Lei, Zhu Han, M. A. Vaazquez-Castro, A. Hjørungnes
Recently, physical layer security (PHY-SEC) has been investigated for wireless communications to prevent eavesdropping without upper layer data encryption. This paper addresses multibeam satellite secure communication using PHY-SEC. We propose a novel system design that minimizes the satellite transmit power subject to the individual secrecy rate requested per user constraints. An iterative algorithm is proposed to update the transmission power of each beam and to achieve the optimal power allocation strategy. The convergence property of the algorithm is proved under justifiable assumptions. The performance is evaluated taking into account the impact of the channel condition with given individual secrecy rate requirement.
{"title":"Multibeam SATCOM systems design with physical layer security","authors":"J. Lei, Zhu Han, M. A. Vaazquez-Castro, A. Hjørungnes","doi":"10.1109/ICUWB.2011.6058908","DOIUrl":"https://doi.org/10.1109/ICUWB.2011.6058908","url":null,"abstract":"Recently, physical layer security (PHY-SEC) has been investigated for wireless communications to prevent eavesdropping without upper layer data encryption. This paper addresses multibeam satellite secure communication using PHY-SEC. We propose a novel system design that minimizes the satellite transmit power subject to the individual secrecy rate requested per user constraints. An iterative algorithm is proposed to update the transmission power of each beam and to achieve the optimal power allocation strategy. The convergence property of the algorithm is proved under justifiable assumptions. The performance is evaluated taking into account the impact of the channel condition with given individual secrecy rate requirement.","PeriodicalId":143107,"journal":{"name":"2011 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114621690","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}
Pub Date : 2011-10-24DOI: 10.1109/ICUWB.2011.6058832
B. Levitas, J. Matuzas, G. Viswanath, Vijaykumar Basalingappa, V. Venkoparao
In this paper we discuss an approach for fuel quality detection using Ultra-wideband (UWB) radar. The experimental setup consists of an ultrashort monocycle pulse transmitter (30 ps), an UWB sampling receiver and UWB antennae (3.1–10.6 GHz). One dimensional Finite Difference Time Domain (FDTD) model was used to model the electromagnetic wave propagation and assess the feasibility of oil quality detection using UWB RADAR. Performance of the UWB RADAR was analyzed through detailed experiments. The adulteration of gasoline and high speed diesel with kerosene was increased from 1% to 12% in steps. Using time of flight analysis the variation in adulteration of gasoline was detected from 1%. Adulteration in high speed diesel was detected using frequency domain analysis. Further, the level of water in the oil storage tank below the diesel or gasoline level can be accurately estimated. Detailed experiments with multiple batches of gasoline and high speed diesel were conducted. We also demonstrate that the adulteration can be detected across different batches of fuel.
{"title":"UWB based oil quality detection","authors":"B. Levitas, J. Matuzas, G. Viswanath, Vijaykumar Basalingappa, V. Venkoparao","doi":"10.1109/ICUWB.2011.6058832","DOIUrl":"https://doi.org/10.1109/ICUWB.2011.6058832","url":null,"abstract":"In this paper we discuss an approach for fuel quality detection using Ultra-wideband (UWB) radar. The experimental setup consists of an ultrashort monocycle pulse transmitter (30 ps), an UWB sampling receiver and UWB antennae (3.1–10.6 GHz). One dimensional Finite Difference Time Domain (FDTD) model was used to model the electromagnetic wave propagation and assess the feasibility of oil quality detection using UWB RADAR. Performance of the UWB RADAR was analyzed through detailed experiments. The adulteration of gasoline and high speed diesel with kerosene was increased from 1% to 12% in steps. Using time of flight analysis the variation in adulteration of gasoline was detected from 1%. Adulteration in high speed diesel was detected using frequency domain analysis. Further, the level of water in the oil storage tank below the diesel or gasoline level can be accurately estimated. Detailed experiments with multiple batches of gasoline and high speed diesel were conducted. We also demonstrate that the adulteration can be detected across different batches of fuel.","PeriodicalId":143107,"journal":{"name":"2011 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121683688","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}
Pub Date : 2011-10-24DOI: 10.1109/ICUWB.2011.6058883
S. Gambini, L. D. De Nardis, E. Alon, J. Rabaey
We present a communication scheme aimed to improve robustness of impulse-UWB energy-detector receivers in the presence of narrowband interference. We first show that for this receivers, the matched filter waveform depends on interferer phase and amplitude, and it can become null for jammers with carrier frequency close to that of the desired channel. We then show that by multiplying the transmitted signal with an appropriately chosen, non-pseudo-random, unit-norm sequence, the baseband energy is maintained within 6 dB of the ideal (no interference) regardless of blockers. The proposed spreading technique enables energy-detection receivers to achieve high-interference robustness by using only simple baseband signal processing, and is hence well suited to low-power UWB systems.
{"title":"Interference robust self-mixing UWB systems using phase-domain spreading","authors":"S. Gambini, L. D. De Nardis, E. Alon, J. Rabaey","doi":"10.1109/ICUWB.2011.6058883","DOIUrl":"https://doi.org/10.1109/ICUWB.2011.6058883","url":null,"abstract":"We present a communication scheme aimed to improve robustness of impulse-UWB energy-detector receivers in the presence of narrowband interference. We first show that for this receivers, the matched filter waveform depends on interferer phase and amplitude, and it can become null for jammers with carrier frequency close to that of the desired channel. We then show that by multiplying the transmitted signal with an appropriately chosen, non-pseudo-random, unit-norm sequence, the baseband energy is maintained within 6 dB of the ideal (no interference) regardless of blockers. The proposed spreading technique enables energy-detection receivers to achieve high-interference robustness by using only simple baseband signal processing, and is hence well suited to low-power UWB systems.","PeriodicalId":143107,"journal":{"name":"2011 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127886536","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}
Pub Date : 2011-10-24DOI: 10.1109/ICUWB.2011.6058815
S. Mazuelas, Yuan Shen, M. Win
The combination of wideband transmission and cooperative techniques can enable accurate and reliable wireless localization. However, due to the nonlinear/non-Gaussian behavior in the system and measurement models, current cooperative localization algorithms either cannot capture such behavior or suffer from high computational complexity. In this paper, we establish a general framework for designing cooperative localization algorithms based on belief condensation (BC), which is an iterative process that accurately approximates the intractable distribution of nodes' positions arising in cooperation by amenable parametric ones. Our simulation results show that the proposed method can obtain high accuracies, approaching the theoretical benchmark, with an affordable complexity.
{"title":"Wideband cooperative localization via belief condensation","authors":"S. Mazuelas, Yuan Shen, M. Win","doi":"10.1109/ICUWB.2011.6058815","DOIUrl":"https://doi.org/10.1109/ICUWB.2011.6058815","url":null,"abstract":"The combination of wideband transmission and cooperative techniques can enable accurate and reliable wireless localization. However, due to the nonlinear/non-Gaussian behavior in the system and measurement models, current cooperative localization algorithms either cannot capture such behavior or suffer from high computational complexity. In this paper, we establish a general framework for designing cooperative localization algorithms based on belief condensation (BC), which is an iterative process that accurately approximates the intractable distribution of nodes' positions arising in cooperation by amenable parametric ones. Our simulation results show that the proposed method can obtain high accuracies, approaching the theoretical benchmark, with an affordable complexity.","PeriodicalId":143107,"journal":{"name":"2011 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127945468","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}
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