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An improved NLOS detection scheme for hybrid-TOA/AOA-based localization in indoor environments 一种改进的基于混合toa / aoa的室内环境定位NLOS检测方案
2013 IEEE International Conference on Ultra-Wideband (ICUWB) Pub Date : 2013-11-14 DOI: 10.1109/ICUWB.2013.6663819
Manato Horiba, E. Okamoto, T. Shinohara, Katsuhiko Matsumura
{"title":"An improved NLOS detection scheme for hybrid-TOA/AOA-based localization in indoor environments","authors":"Manato Horiba, E. Okamoto, T. Shinohara, Katsuhiko Matsumura","doi":"10.1109/ICUWB.2013.6663819","DOIUrl":"https://doi.org/10.1109/ICUWB.2013.6663819","url":null,"abstract":"Collecting location information of persons or things in sensor networks enables a variety of services and applications. For such location information, time of arrival (TOA) or angle of arrival (AOA) of radio waves is often used. Moreover, a hybrid use of them, called hybrid-TOA/AOA (HTA), has also been proposed for performance improvement. However, when the direct wave is blocked by obstacles in the non-line-of-sight (NLOS) environment, the estimation accuracy is severely deteriorated. To coordinate this problem, an iterative minimum residual (IMR) scheme has been proposed for TOA-based estimation. In the IMR scheme, the NLOS nodes are sequentially detected and eliminated, and the estimation performance is improved. However, the IMR scheme for HTA measurements has not been considered. Therefore, in this paper, we propose a new NLOS detection scheme based on IMR scheme for HTA localization and evaluate its improved performances by computer simulations.","PeriodicalId":159159,"journal":{"name":"2013 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"62 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120923202","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: 18
An antenna with small footprint, small volume and full ground plane for UWB systems 一种用于超宽带系统的占地面积小、体积小、全地平面的天线
2013 IEEE International Conference on Ultra-Wideband (ICUWB) Pub Date : 2013-11-14 DOI: 10.1109/ICUWB.2013.6663815
M. Iqbal, Y. Ge, K. Esselle
{"title":"An antenna with small footprint, small volume and full ground plane for UWB systems","authors":"M. Iqbal, Y. Ge, K. Esselle","doi":"10.1109/ICUWB.2013.6663815","DOIUrl":"https://doi.org/10.1109/ICUWB.2013.6663815","url":null,"abstract":"This paper presents the design of an antenna with small footprint, small volume and full ground plane for ultrawideband (UWB) systems. The design consists of two different dielectric segments, which reside above a ground plane, and is excited by a small metallic patch connected to a coaxial probe. The selected dielectric resonator (DR) bandwidth is enhanced by removing some dielectric and forming an air cavity within the structure. The volume of proposed DRA is also reduced by adding a finite planar conducting wall. A full ground plane is used to ensure that most of the power radiates to upper hemisphere. The proposed DRA with good radiation characteristics offers a simulated bandwidth of 68% between 4.6 and 9.3 GHz with |S11| <; -10 dB.","PeriodicalId":159159,"journal":{"name":"2013 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129568668","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
Modified compressive sensing based receiver for impulse radio communications in UWB channels 基于改进压缩感知的UWB脉冲无线电通信接收机
2013 IEEE International Conference on Ultra-Wideband (ICUWB) Pub Date : 2013-11-14 DOI: 10.1109/ICUWB.2013.6663865
Qi Zhang, J. Qin, A. Nallanathan
{"title":"Modified compressive sensing based receiver for impulse radio communications in UWB channels","authors":"Qi Zhang, J. Qin, A. Nallanathan","doi":"10.1109/ICUWB.2013.6663865","DOIUrl":"https://doi.org/10.1109/ICUWB.2013.6663865","url":null,"abstract":"For impulse radio communications, the coherent Rake receiver requires accurate time acquisition and channel estimation whereas the autocorrelation receiver (AcR) requires a wideband analog delay element which has high complexity. In this paper, we propose a modified compressive sensing (CS) based receiver to avoid the stringent time acquisition, channel estimation and complicated wideband analog delay element. Different from the conventional CS algorithms, the proposed receiver modifies the randomly generated base functions according to channel statistics and simplifies the ℓ1 norm minimization as to form the detection template by combining several base functions which have larger correlation coefficients with the received signal. Furthermore, the received signal is demodulated by a symbol rate sampling at the proposed receiver. Computer simulation results show that the proposed receiver outperforms the Rake receiver with 8 fingers and AcR.","PeriodicalId":159159,"journal":{"name":"2013 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133640978","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
Detecting UWB signals using cyclic features 利用循环特征检测超宽带信号
2013 IEEE International Conference on Ultra-Wideband (ICUWB) Pub Date : 2013-11-14 DOI: 10.1109/ICUWB.2013.6663837
Yiyin Wang, Xiaoli Ma, Qi Zhou
{"title":"Detecting UWB signals using cyclic features","authors":"Yiyin Wang, Xiaoli Ma, Qi Zhou","doi":"10.1109/ICUWB.2013.6663837","DOIUrl":"https://doi.org/10.1109/ICUWB.2013.6663837","url":null,"abstract":"Ultra wideband (UWB) signals facilitate efficient spectrum usage via coexistence with other narrowband signals. The detection of UWB signals under the coexistent narrowband signals is extremely important for UWB commercial and military purposes. Inherent cyclostationarity of the UWB signals provides unique features different from those of narrowband signals. In this paper, we investigate the cyclic features of a generalized UWB impulse radio (IR) signal. In order to detect UWB IRs under the existence of a narrowband signal (e.g. a GMSK signal), we explore both the nonconjugate and the conjugate cyclostationarity. A multi-cycle detector is proposed in time-domain making use of the conjugate cyclic autocorrelation to detect the UWB signal under the existence of the GMSK signal. The simulation results indicate the possibility to detect the UWB signal which is overwhelmed by the GMSK signal.","PeriodicalId":159159,"journal":{"name":"2013 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121923992","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
Error probability of OFDM-based hybrid relay protocols over wideband fading channels 基于ofdm的混合中继协议在宽带衰落信道上的错误概率
2013 IEEE International Conference on Ultra-Wideband (ICUWB) Pub Date : 2013-11-14 DOI: 10.1109/ICUWB.2013.6663858
Ibrahim Khalil Sileh, W. Xiang, A. Maxwell
{"title":"Error probability of OFDM-based hybrid relay protocols over wideband fading channels","authors":"Ibrahim Khalil Sileh, W. Xiang, A. Maxwell","doi":"10.1109/ICUWB.2013.6663858","DOIUrl":"https://doi.org/10.1109/ICUWB.2013.6663858","url":null,"abstract":"Orthogonal frequency division multiplexing (OFDM) based relay architecture is a promising technique in modern wireless communication systems. In frequency-selective channels, different sub-carriers experience different fades. Data transmitted on the sub-carriers which experience deep fade will have a high probability of getting lost at the destination. In this paper, we propose a multicarrier-adaptive hybrid relay protocol (MC-AHRP) over frequency-selective channels to overcome this problem. In the proposed protocol, the subcarrier performs an amplify-and-forward (AF) scheme when the instantaneous SNR of the source-relay link exceeds a preset threshold value, or it utilizes the adaptive decode-and-forward (ADF) scheme as the alternative. For any subcarrier of the ADF scheme that fails to be decoded, the destination selects the respective subcarrier from the direct transmission path instead. The performance of the proposed scheme is analyzed in terms of bit error probability (BEP). Simulation and numerical results show that a significant performance gain can be achieved.","PeriodicalId":159159,"journal":{"name":"2013 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116627389","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
High output dynamic UWB pulse generator for BPSK modulations 用于BPSK调制的高输出动态UWB脉冲发生器
2013 IEEE International Conference on Ultra-Wideband (ICUWB) Pub Date : 2013-11-14 DOI: 10.1109/ICUWB.2013.6663842
E. Muhr, R. Vauché, S. Bourdel, J. Gaubert, O. R. Sparrow, N. Dehaese, I. Benamor, H. Barthélemy
{"title":"High output dynamic UWB pulse generator for BPSK modulations","authors":"E. Muhr, R. Vauché, S. Bourdel, J. Gaubert, O. R. Sparrow, N. Dehaese, I. Benamor, H. Barthélemy","doi":"10.1109/ICUWB.2013.6663842","DOIUrl":"https://doi.org/10.1109/ICUWB.2013.6663842","url":null,"abstract":"This paper presents the design of a fully integrated pulse generator which allows BPSK modulation to be implemented. This emitter is based on the response filter architecture and has been integrated in a 130 nm CMOS technology with a 1.2 V supply voltage on a silicon area of 2.88 mm2. The bandwidth at -10 dB is about 1.8 GHz around 3.52 GHz. The output dynamic voltage is equal to 1.72 V peak to peak on a 100 Ω differential load which gives an energy of 1.93 pJ for the twice bipolar generated pulses and demonstrates the pulse generator capability to be used for bipolar modulations.","PeriodicalId":159159,"journal":{"name":"2013 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131694488","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
Design and analysis of an antenna for batteryless transcranial direct current stimulation devices 无电池经颅直流电刺激装置天线的设计与分析
2013 IEEE International Conference on Ultra-Wideband (ICUWB) Pub Date : 2013-11-14 DOI: 10.1109/ICUWB.2013.6663817
M. K. Hosain, A. Kouzani, S. Jaberzadeh
{"title":"Design and analysis of an antenna for batteryless transcranial direct current stimulation devices","authors":"M. K. Hosain, A. Kouzani, S. Jaberzadeh","doi":"10.1109/ICUWB.2013.6663817","DOIUrl":"https://doi.org/10.1109/ICUWB.2013.6663817","url":null,"abstract":"The purpose of this study is to design a low-cost planar Archimedean dipole antenna for batteryless transcranial direct current stimulation devices. The antenna parameters including resonance frequency, radiation efficiency, radiation pattern, and gain are simulated using finite difference time domain based electromagnetic simulation software XFdtd. The proposed antenna is simulated with low-cost FR4 PCB substrate of thickness of 1.6 mm. The antenna is designed with half wavelength of resonant frequency and fed with a matching line. The target frequency band is the industrial, scientific and medical (ISM) band of 915 MHz which is in the simulated band width of 31 MHz (903-934MHz). Moreover, since the bio-effect of specific absorption rate by radio frequency electromagnetic wave for power harvesting is an important concern, we try to find out the safety limit. Thus a quantitative analysis of distributions of electric field and power absorption in anatomical human head model by the far field radio frequency energy received by our designed antenna has been presented.","PeriodicalId":159159,"journal":{"name":"2013 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129317195","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
Energy-efficient cooperative relay selection for UWB based body area networks 基于UWB体域网的节能协同中继选择
2013 IEEE International Conference on Ultra-Wideband (ICUWB) Pub Date : 2013-11-14 DOI: 10.1109/ICUWB.2013.6663829
Jie Ding, E. Dutkiewicz, Xiaojing Huang, Gengfa Fang
{"title":"Energy-efficient cooperative relay selection for UWB based body area networks","authors":"Jie Ding, E. Dutkiewicz, Xiaojing Huang, Gengfa Fang","doi":"10.1109/ICUWB.2013.6663829","DOIUrl":"https://doi.org/10.1109/ICUWB.2013.6663829","url":null,"abstract":"In this paper, an energy-efficient cooperative relay selection scheme is investigated for ultra-wideband (UWB) based wireless body area networks (WBANs). With a realistic nonlinear energy consumption model, the energy consumption for single-relay cooperation is established and the optimal power allocation for cooperation is derived accordingly to minimize the total energy consumption at a given relay location. Afterwards, an energy efficient relay selection criterion is described in detail. Simulation results verify the suitability of the criterion and show that, with the same desired spectral efficiency (SE), direct transmission is preferable for energy saving when the transmitter and receiver are located on the same side of the human body. However, at a suitable relay location and with large transmission distance, cooperative transmission can achieve a significant improvement on energy efficiency compared with direct transmission when the transmitter and receiver are located on the different sides of the human body.","PeriodicalId":159159,"journal":{"name":"2013 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131023113","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: 20
UWB antenna built into 3G smartphones 3G智能手机内置的超宽带天线
2013 IEEE International Conference on Ultra-Wideband (ICUWB) Pub Date : 2013-11-14 DOI: 10.1109/ICUWB.2013.6663828
F. Koshiji, Y. Akiyama, K. Koshiji
{"title":"UWB antenna built into 3G smartphones","authors":"F. Koshiji, Y. Akiyama, K. Koshiji","doi":"10.1109/ICUWB.2013.6663828","DOIUrl":"https://doi.org/10.1109/ICUWB.2013.6663828","url":null,"abstract":"In recent years, ultra-wideband (UWB) technology has received considerable attention as a promising technology for realizing ubiquitous networks. In comparison with conventional narrowband antennas, it is more difficult to construct a broadband antenna in electronic equipment because it is necessary to ensure antenna performance over the entire UWB frequency band. In this study, we investigated an unbalanced dipole antenna with semicircular and trapezoidal elements, known for its excellent, broadband performance, in 3G smartphones. Further, we proposed and investigated an antenna configuration that serves both the 2-GHz band for 3G smartphones and the 3.1-10.6-GHz UWB. As a result, we designed and developed an antenna configuration with a VSWR of less than 2.1 in both the 3G and UWB frequency bands, which was adequate for practical use.","PeriodicalId":159159,"journal":{"name":"2013 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123758461","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
Pilot symbols distribution for compressive sensing based NBI mitigation in UWB systems 超宽带系统中基于压缩感知的NBI缓解导频符号分布
2013 IEEE International Conference on Ultra-Wideband (ICUWB) Pub Date : 2013-11-14 DOI: 10.1109/ICUWB.2013.6663838
S. Alawsh, A. Muqaibel
{"title":"Pilot symbols distribution for compressive sensing based NBI mitigation in UWB systems","authors":"S. Alawsh, A. Muqaibel","doi":"10.1109/ICUWB.2013.6663838","DOIUrl":"https://doi.org/10.1109/ICUWB.2013.6663838","url":null,"abstract":"Ultra wideband (UWB) technology is promising a cutting edge in delivering high data rate for short range wireless communication systems. Because of their large bandwidth, UWB signals may encounter some problems especially with high sampling rate requirements. Moreover, coherence existence with other narrowband systems is a major concern which needs to be addressed through proper mechanisms. Since narrowband interference (NBI) signals have sparse representation in the discrete cosine transform (DCT) domain, they can be estimated and suppressed using Compressive Sensing (CS). CS also has the ability to reduce the high sampling rate requirements. For training based NBI mitigation with CS, three pilot groups symbol are used to estimate the NBI signal subspace, UWB signal subspace, and provide information about the channel. In this paper, the distribution of pilot symbols among the three groups is investigated in the presence of strong NBI. The investigation is based on the bit error rate (BER). The influence of each pilot group symbols is also studied. Simulation results show that the third pilot group symbols is the most dominant one; hence more symbols should be assigned to estimate the channel information.","PeriodicalId":159159,"journal":{"name":"2013 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121067138","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
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