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2013 IEEE International Conference on Ultra-Wideband (ICUWB)最新文献

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IR-UWB single-chip transceiver for high-band operation compliant to IEEE 802.15.4a IR-UWB单片收发器,用于高频段操作,符合IEEE 802.15.a
Pub Date : 2013-11-14 DOI: 10.1109/ICUWB.2013.6663861
G. Fischer, D. Martynenko, O. Klymenko, S. Olonbayar, D. Kreiser, J. Digel, M. Masini, M. Grozing, R. Kraemer
This paper describes a monolithic integrated single-chip transceiver intended for impulse radio (IR) - Ultra-wide Band (UWB) applications compliant to the IEEE 802.15.4a standard. The transceiver operates in the higher UWB band on the mandatory channel #9 (7.9872 GHz). The implemented nominal data rate is 850 kb/sec. The presented chip consists of the entire RF-front-end, 6-bit-resolution successive approximation register (SAR) analogue-to-digital converter (ADC), and the baseband processor running with a clock of 31.2 MHz. The analogue frontend can be further segmented into a pulse generation and transmit part and a quadrature direct down conversion receiver part, whereas both parts share a frequency synthesizer based on an integer-N phase-locked loop (PLL). The impulse generation is based on the gated oscillator principle allowing required on-off keying (OOK) as well as binary phase shift keying (BPSK). While the receiver supports both, coherent and non-coherent impulse detection, here only non-coherent operation will be presented. The baseband processor part contains a separated 499.2 MHz clocked block for transmitter control and provides a serial peripheral interface (SPI) for data exchange with an external micro controller. The presented chip was fabricated in a 0.25 μm SiGe:C BiCMOS technology occupying a Si area of 3.25 - 3.25 mm2.
本文介绍了一种单片集成单芯片收发器,用于符合IEEE 802.15.a标准的脉冲无线电(IR) -超宽带(UWB)应用。收发器工作在强制信道#9 (7.9872 GHz)的较高UWB频段。实现的标称数据速率为850 kb/秒。该芯片由整个射频前端、6位分辨率逐次逼近寄存器(SAR)模数转换器(ADC)和运行时钟为31.2 MHz的基带处理器组成。模拟前端可以进一步分割为脉冲产生和发射部分和正交直接下变频接收器部分,而这两个部分共享一个基于整数n锁相环(PLL)的频率合成器。脉冲产生基于门控振荡器原理,允许所需的开关键控(OOK)以及二进制相移键控(BPSK)。虽然接收机同时支持相干和非相干脉冲检测,但这里只介绍非相干操作。基带处理器部分包含一个分离的499.2 MHz时钟块,用于发射器控制,并提供一个串行外设接口(SPI),用于与外部微控制器进行数据交换。该芯片采用0.25 μm SiGe:C BiCMOS工艺,Si面积为3.25 ~ 3.25 mm2。
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引用次数: 9
Analysis of the IEEE 802.15.4a UWB PHY layer for optimizing the power consumption of the transmitter 分析IEEE 802.15.4a UWB物理层,优化发射机功耗
Pub Date : 2013-11-14 DOI: 10.1109/ICUWB.2013.6663846
P. Losco, S. Bourdel, J. Gaubert, N. Dehaese, S. Meillére, O. Ramos, R. Vauché, H. Barthélemy
This paper presents an analysis of the power consumption of the UWB PHY layer of the IEEE 802.15.4a standard. This work focuses on the transmitter PHY layer implementation. The influence of the different modes settings on the power consumption is investigated. The considered implementations use an FPGA coupled with an UWB pulse generator implemented in an ASIC. The first PHY layer implementation is fully integrated in the FPGA. The consumption study reveals that the system consumption is reduced with the Mean PRF of 3.9 MHz due to the lower number of emitted pulses. The study also shows that the highest power consumption is due to the 499.2 MHz clock. The second implementation proposes to move the 499.2 MHz clock into the ASIC to reduce its consumption. For the mandatory data rate and the 3.9 MHz Mean PRF, this technique reduces the energy by emitted bit from 2574 pJ to 727 pJ.
本文分析了IEEE 802.15.4a标准UWB物理层的功耗。本文重点研究了发射机物理层的实现。研究了不同模式设置对功耗的影响。考虑的实现使用FPGA和在ASIC中实现的UWB脉冲发生器。第一个物理层实现完全集成在FPGA中。功耗研究表明,由于发射脉冲数较少,系统功耗降低,平均PRF为3.9 MHz。该研究还表明,最高的功耗是由于499.2 MHz时钟。第二种实现建议将499.2 MHz时钟移动到ASIC中以减少其消耗。对于强制数据速率和3.9 MHz平均PRF,该技术将发射比特的能量从2574 pJ降低到727 pJ。
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引用次数: 4
CMOS ultra-wideband low noise amplifier (UWB-LNA) using symmetric 3D RF integrated inductor 采用对称三维射频集成电感的CMOS超宽带低噪声放大器(UWB-LNA
Pub Date : 2013-11-14 DOI: 10.1109/ICUWB.2013.6663860
K. Yousef, H. Jia, R. Pokharel, A. Allam, M. Ragab, H. Kanaya, K. Yoshida
This paper presents the design of a 2-16 GHz ultra wideband low noise amplifier (UWB LNA). The proposed UWB LNA employs a symmetric 3D RF integrated inductor. The UWB LNA has a gain of 11 ± 1.0 dB with NF less than 3.25 dB. Good input and output impedance matching and good isolation are achieved over the operating frequency band. The proposed UWB LNA is driven from a 1.8V supply. This UWB LNA is designed and simulated in the standard 0.18 μm CMOS technology.
本文介绍了一种2- 16ghz超宽带低噪声放大器的设计。所提出的超宽带LNA采用对称的3D射频集成电感。UWB LNA增益为11±1.0 dB, NF小于3.25 dB。在工作频带内实现了良好的输入和输出阻抗匹配和良好的隔离。所提出的超宽带LNA由1.8V电源驱动。该超宽带LNA采用标准的0.18 μm CMOS技术进行设计和仿真。
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引用次数: 5
Estimation of multi-component mixture proportions using regression machine analysis of ultra-wideband spectroscopic measurements 超宽带光谱测量中多组分混合比例的回归分析
Pub Date : 2013-11-14 DOI: 10.1109/ICUWB.2013.6663824
Stuart Gibbs, M. Gardner, Brandon Herrera, Christopher D. Faulkner, Adam M. Parks, J. Daniliuc, Paul Hodge, B. R. Jean, R. Marks
Ultra-wideband signals are used to examine multiple-constituent fluid mixtures in a semi-open system. A feedforward neural network operates on an array of easily computed signal properties, plus the weight and temperature of the fluid samples, to provide an estimate of the constituent proportions. The average performance of the neural network is tested by artificially increasing the test data sample size and repeatedly training neural networks of the same topology. Networks of differing topologies are compared. Statistical analysis is performed on these results and the 95% confidence interval of the data prediction is shown. The 95% accuracy averages around ± 6.9 percentage points for both oil and water.
超宽带信号用于检测半开放系统中的多组分流体混合物。前馈神经网络对一系列易于计算的信号特性进行操作,再加上流体样品的重量和温度,以提供组成比例的估计。通过人为增加测试数据样本量和重复训练具有相同拓扑结构的神经网络来测试神经网络的平均性能。比较了不同拓扑结构的网络。对这些结果进行统计分析,给出了数据预测的95%置信区间。对于油和水,95%的准确率平均约为±6.9个百分点。
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引用次数: 1
Moving human target CFAR detection along slow-time profile in ultrawide band through-wall radar 超宽带穿壁雷达慢时剖面移动人体目标CFAR探测
Pub Date : 2013-11-14 DOI: 10.1109/ICUWB.2013.6663834
Jun Hu, Zhenlong Yuan, G. Zhu, Liang Wang, Xiaotao Huang
Constant false alarm rate (CFAR) methods are generally applied for the target detection after clutter mitigation in the through-wall sensing applications using ultra-wide band through-wall radar. Current studies of CFAR only focus on detection of moving human targets without considering the effect of residual clutters. However, in the cases with the presence of strong stationary clutters, little residual clutters after clutter mitigation are strong enough to cause false alarms in the following target detection, compared with the weak human target echoes. Unfortunately, conventional CFAR methods fail to remove the effect of residual clutters and suffer from false alarms. To combat this problem and obtain a reliable detection performance, a moving target CFAR detection method along slow-time profile is proposed in this paper. Experiments with an impulse through wall radar show that the proposed method not only has good detection performance for moving human targets, but also successfully gets rid of the problems brought by the strong residual stationary clutters.
在超宽带穿壁雷达的穿壁传感应用中,通常采用恒虚警率(CFAR)方法进行杂波抑制后的目标检测。目前CFAR的研究主要集中在对运动人体目标的检测上,没有考虑残余杂波的影响。然而,在强稳态杂波存在的情况下,相对于弱人目标回波,杂波消除后的少量残留杂波足以在后续目标检测中产生虚警。遗憾的是,传统的CFAR方法不能消除残余杂波的影响,并且容易产生误报。为了解决这一问题并获得可靠的检测性能,本文提出了一种沿慢时间剖面的运动目标CFAR检测方法。脉冲穿墙雷达实验表明,该方法不仅对运动人体目标具有良好的检测性能,而且成功地克服了强残余静止杂波带来的问题。
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引用次数: 5
Dielectric waveguide with planar multi-mode excitation for high data-rate chip-to-chip interconnects 用于高数据速率片对片互连的平面多模激励介质波导
Pub Date : 2013-09-01 DOI: 10.1109/ICUWB.2013.6663845
N. Dolatsha, A. Arbabian
An all-electrical, low-cost, wideband chip-to-chip link on a multi-mode dielectric waveguide is proposed. The signal is coupled from the silicon chip to the fundamental and polarization-orthogonal degenerate Ex11 and Ey11 waveguide modes using planar electric and slot dipole antennas, respectively. This approach doubles the capacity of a single line without sacrificing robustness or adding implementation cost and complexity. Two independent ultra-wideband 30GHz channels, each from 90 GHz to 120 GHz, are demonstrated. The large available bandwidth will be channelized in frequency for optimal overall efficiency with a CMOS transceiver. Various design aspects of the structure are examined and discussed. The proposed waveguide offers a solution for Terabit-per-second (Tbps) electrical wireline links.
提出了一种基于多模介质波导的全电、低成本、宽带片对片链路。利用平面电偶极子天线和槽偶极子天线分别将信号从硅芯片耦合到基模和偏振正交简并Ex11和Ey11波导模式。这种方法在不牺牲健壮性或增加实现成本和复杂性的情况下使单线的容量翻倍。演示了两个独立的超宽带30GHz通道,每个通道从90 GHz到120 GHz。大可用带宽将信道化的频率与CMOS收发器的最佳整体效率。对结构的各个设计方面进行了检查和讨论。所提出的波导为每秒太比特(Tbps)的电线连接提供了一个解决方案。
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引用次数: 15
Fast time-domain focussing for general bistatic low frequency ultra wide band SAR in elliptical polar coordinate 椭圆极坐标下通用双基地低频超宽带SAR快速时域聚焦
Pub Date : 2013-09-01 DOI: 10.1109/ICUWB.2013.6663849
Hongtu Xie, D. An, Leping Chen, Xiaotao Huang, Zhimin Zhou
A novel fast time-domain approach called bistatic fast factorized backprojection algorithm (FFBPA) for general bistatic low frequency ultra wide band (UWB) synthetic aperture radar (SAR) imaging is proposed. This method is able to accurately dispose the azimuth-variance of range cell migrations and motion errors in general bistatic SAR imaging and achieve the imaging efficiency in parity with frequency-domain methods. It represents subimages in elliptical polar coordinates to reduce the number of operations. Taking into account motion errors, the sampling requirements of the elliptical subimages is deduced by analyzing the bistatic range error. The implementation and computational load of the bistatic FFBPA (BFFBPA) are discussed. Simulation results are shown to demonstrate the correctness of the theory analysis and the validity of the proposed method.
针对一般双基地低频超宽带(UWB)合成孔径雷达(SAR)成像,提出了一种新的双基地快速分解反投影算法(FFBPA)。该方法能够准确地处理一般双基地SAR成像中距离单元偏移的方位方差和运动误差,达到与频域方法相当的成像效率。它以椭圆极坐标表示子图像,以减少操作次数。考虑运动误差,通过分析双基地距离误差,推导出椭圆子图像的采样要求。讨论了双稳态FFBPA (BFFBPA)的实现和计算负荷。仿真结果验证了理论分析的正确性和所提方法的有效性。
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引用次数: 0
Exploration and performance evaluation of a compressed sensing based IR-UWB receiver 基于压缩感知的红外-超宽带接收机的研制与性能评价
Pub Date : 2013-09-01 DOI: 10.1109/ICUWB.2013.6663853
Qin Zhou, Z. Zou, H. Tenhunen, Lirong Zheng
Compressed sensing (CS) is an emerging technique which enables sub-Nyquist sampling of sparse or compressible signals. The application of CS theory in the impulse radio ultrawideband (IR-UWB) receiver design has recently attracted much attention. This paper provides an exploration of the CS-based IR-UWB receiver from different aspects: front-end hardware architectures, back-end signal processing algorithms as well as application scenarios. And the performance of the CS receiver regarding the number of CS measurement and different CS recovery algorithms is evaluated and compared against the conventional sub-Nyquist sampling receiver based on energy detection (ED) scheme. Moreover, a strategy to improve the CS receiver performance in handling UWB signals with heavy noise and multipath propagation is proposed.
压缩感知(CS)是一种新兴的对稀疏或可压缩信号进行亚奈奎斯特采样的技术。CS理论在脉冲无线电超宽带(IR-UWB)接收机设计中的应用近年来备受关注。本文从前端硬件架构、后端信号处理算法以及应用场景等方面对基于cs的IR-UWB接收机进行了探讨。并与基于能量检测(ED)方案的传统亚奈奎斯特采样接收机进行了CS测量次数和不同CS恢复算法的性能评价和比较。在此基础上,提出了一种提高CS接收机处理高噪声和多径传播超宽带信号性能的策略。
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引用次数: 6
Entropy based TOA estimation in IR UWB ranging with energy detection receiver under dense multipath environment 密集多径环境下带能量探测接收机的红外超宽带测距熵估计
Pub Date : 2013-09-01 DOI: 10.1109/ICUWB.2013.6663818
Wenyan Liu, Xiaotao Huang, T. Jin, Zhimin Zhou, Xiangyang Li
To estimate the time of arrival (TOA) of the first path (FP) in ultra wideband (UWB) ranging, we propose an entropy based method. In the energy detection (ED) receiver, thresholding crossing (TC) is used a lot to detect the FP. The threshold should be carefully chosen, or else the false alarm rate will be high. Our method detects the FP from a different angle based on the arrival characteristics of the dense multipath, which is that the FP is always followed by many other strong paths. During a short interval, the TOAs of these paths are definite and the samples which contain these multipath signals can exceed the suboptimal threshold in most cases, while the TOAs of the few TC noise samples before the FP are random. We use the entropy to measure the randomness of the distribution of the last TC sample before the current one. Then the FP is determined by choosing the sample which has very large entropy and is followed by a sample with very low entropy. Simulation results verify its effectiveness with IEEE 802.15.4a Standard.
为了估计超宽带(UWB)测距中第一路径(FP)的到达时间(TOA),提出了一种基于熵的方法。在能量检测(ED)接收机中,阈值交叉(TC)被大量用于检测FP。阈值的选择要慎重,否则虚警率会很高。我们的方法基于密集多路径的到达特征,从不同的角度检测FP,即FP后面总是有许多其他强路径。在短时间间隔内,这些路径的toa是确定的,包含这些多路径信号的样本在大多数情况下可以超过次优阈值,而在FP之前的少数TC噪声样本的toa是随机的。我们使用熵来度量当前TC样本之前的最后一个TC样本分布的随机性。然后,通过选择熵非常大的样本来确定FP,然后选择熵非常小的样本。仿真结果验证了该方法在IEEE 802.15.a标准下的有效性。
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引用次数: 2
Ultra-wideband Synthetic Aperture Radar landmine detection based on landmine-enhanced imaging 基于地雷增强成像的超宽带合成孔径雷达地雷探测
Pub Date : 2013-09-01 DOI: 10.1109/ICUWB.2013.6663848
Liang Fu-lai, Song Qian, Wang Yu-ming, Zhang Han-hua, Zhou Zhi-min
Ultra-wideband Synthetic Aperture Radar (UWB SAR) has the characteristics of wide aspect angle and wide frequency band. UWB SAR data contains rich information about targets. However, the prior information of landmine is used until the discrimination in the conventional landmine detection procedure. Therefore, in order to ensure the probability of detection, there exist many false alarms in the prescreening results. That will increase the burden of the subsequent processing steps. By applying the prior knowledge of landmine to imaging, landmine-enhanced imaging can be realized and beneficial improvements in image quality and detection performance can be expected. In this paper, the unique feature of aspect invariance is used in landmine-enhanced imaging. Further, we apply the landmine-enhanced imaging to landmine detection. Thus, the detection probability of landmine increases under the same false alarms rate as the traditional landmine detection method. The experimental results demonstrate the effectiveness and practicability of the proposed algorithm.
超宽带合成孔径雷达(UWB SAR)具有宽纵横角、宽频带的特点。超宽带SAR数据包含丰富的目标信息。然而,在传统的地雷探测过程中,都是利用地雷的先验信息进行判别。因此,为了保证检测的概率,在预筛选结果中存在很多虚警。这将增加后续处理步骤的负担。将地雷的先验知识应用到成像中,可以实现地雷增强成像,提高图像质量和探测性能。在地雷增强成像中,利用了其独特的面不变性。进一步,我们将地雷增强成像应用于地雷探测。因此,在与传统的地雷探测方法相同的虚警率下,地雷的探测概率增加。实验结果证明了该算法的有效性和实用性。
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引用次数: 1
期刊
2013 IEEE International Conference on Ultra-Wideband (ICUWB)
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