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Description: Ultra Wideband Cognitive Network Objective Issues
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Size: 275456 |
Author: dba |
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Description: Cognitive Radio: UWB Integration and
Related Antenna Design
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Size: 2875392 |
Author: dba |
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Description: Performance ofUWB Receiver with Cognitive
Channel Allocation and Rake Optimization
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Size: 3579904 |
Author: dba |
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Description: 基于贝叶斯压缩感知的一种极宽带信道的估计-A compressed sensing based on Bayesian very broadband channel estimation
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Size: 114688 |
Author: Kim |
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Description: UCW的原理和matlab仿真计算程序代码，经过测试-UCW theory and simulation matlab code, tested
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Size: 4096 |
Author: lx |
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Description: ：近距离目标超高分辨率微波成像技术在安全检测、非破坏性控制、生物医学等领域中有着非常重要的应用
价值和广阔的应用前景。该文利用基于窄脉冲形式的超宽带时域雷达系统研究近距离目标的高分辨率ISAR成像，
给出了仿真和实测结果。利用转台旋转目标，基于超宽带脉冲源和超宽带收发天线以及高性能取样示波器，配以同
步触发脉冲和自行研发的数据采集软件，搭建了该时域雷达实验系统，提出了准确获取目标回波信息的实验条件，
和实现回波延时精确校正的误差补偿方法。并针对采样时间窗内的杂波干扰，讨论了时域后向投影算法(Back
Projection，BP)与背景对消技术相结合的成像算法，实现了分辨率为 8 mm 的近距离目标的成像，准确地反映了
目标的位置、形状和大小等信息。- The high resolution imaging of near field targets are interesting for security, non-destructive control and
biomedical application. In this paper, high resolution near field ISAR imaging is implemented using Ultra Wide
Band (UWB) time domain radar system. Simulation and experiment are both conducted. The target is rotated by
turntable. The system is built based on the UWB pulse source, UWB antennas, high performance sampling
oscillograph, synchronous trigger pulse and proper motion study data acquisition software. Experiment condition
and delay errors compensation method are presented to obtain accurate echo information of the target. And Back
Projection (BP) combined with background cancel algorithm is discussed considering the clutter interference in
time window.
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Size: 1698816 |
Author: chinaafxp |
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Description: 有关超宽带方面的论文，有用的话，下来看看。-UWB in the papers, useful, down to see.
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Size: 616448 |
Author: jlb |
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Description: UWB(超宽带) matlab程序,包含了qpsk 、ofdm调制，awgn 信道的产生，IEEE 信道脉冲响应等内容。-This file include some basic programmes of UWB .
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Size: 128000 |
Author: 张杰 |
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Description: In this paper we investigate a multilayer frequency selective surface (FSS) and its potential use in ultra wideband (UWB) antennas. A complete design and analysis of the FSS with
an example UWB antenna is presented. The multilayer FSS provides an appropriate reflection phase to act as a reflector for
the UWB antenna and is able to enhance its gain. A design guideline for the FSS is presented via a parametric study. Evaluation of the multilayer FSS with a UWB slot antenna shows a significant enhancement of gain across an ultra wideband
(140 ) impedance bandwidth. Its compact configuration provides flexibility for mounting the reflector close to the slot antenna geometry and makes it more suitable for various UWB devices. Simulations show a linear phase response across 4 to 12 GHz band which is sufficient for ultra wideband operation.
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Size: 619520 |
Author: Mohamed Rias |
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Description: Two elements diversity planar antenna for a
multiple-input multiple-output application is proposed. By adopting two Y-shaped radiators, the antenna provides wideband impedance
matching characteristic over the desired frequency band. To reduce the mutual coupling between two radiating elements, three stubs are
inserted in the ground plane. Good impedance matching and improved isolation characteristics are observed. The measured impedance bandwidth of the proposed antenna ranges from 2.27 GHz
to 10.2 GHz for return loss less than 10 dB. Parametric analysis has been conducted to investigate the effect of radiator length and
insertion of stubs on the impedance bandwidth and isolation characteristics.
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Size: 1225728 |
Author: Mohamed Rias |
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Description: puncturing simulation in viterbi algorithm in matlab code
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Size: 1024 |
Author: sh.kafshgari |
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Description: 知无线电是一种智能频谱共享技术。它通过感知频谱环境、智能学习并实时调整其传输参数，实现频谱的再利用，可显著地提高频谱的利用率，特别是可让未授权用户使用授权用户的频谱。本文在概述了认知无线电技术的发展之后，重点介绍了认知无线电技术及其应用的研究现状，包括认知无线电的总体概念，相关频谱政策和标准化工作进展，相关关键技术和安全技术的研究，以及它在UWB、Mesh、WRAN中的应用现状。最后对认知无线电技术的发展提出了几点展望。-cognitive wireless networks
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Size: 8192 |
Author: w,k |
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Description: 超宽带脉冲无线电的英文课件，内容较为深入，适合初学者-UWB impulse radio in English courseware, content is more in-depth, suitable for beginners ...
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Size: 110592 |
Author: kweior |
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Description: This pdf is about matlab based channel and timing estimation for uwb and gps.
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Size: 104448 |
Author: ramza |
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Description: UWB related document
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Size: 145408 |
Author: puli |
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Description: In this paper, we propose and investigate a lowcomplexity human motion tracking system which is based on ultra-wideband (UWB) radio nodes.
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Size: 120832 |
Author: dilip |
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Description: In this paper, we propose and investigate a lowcomplexity human motion tracking system which is based on ultra-wideband (UWB) radio nodes.
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Size: 120832 |
Author: dilip |
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Description: this code is for ranging applications using UWB signals.it has applications in virtual reality, medical, body area networks.
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Size: 3072 |
Author: dilip |
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Description: Fixed-Point Modeling in an Ultra Wideband (UWB)
Wireless Communication System
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Size: 148480 |
Author: zouggari boualem |
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Description: 时域波束形成实现早期乳腺肿瘤检测,采用超宽带一阶高斯波-time beamforming for early breast cancer detection by UWB
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Size: 800768 |
Author: 徐立 |
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