UWB channel sounding and signal processing

UWB 信道探测和信号处理

• 批准号: 42072-2006
• 负责人: ElTanany, Mohamed
• 金额: $ 1.58万
• 依托单位: Carleton University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2007
• 资助国家: 加拿大
• 起止时间: 2007-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=362134
• 关键词: UWB; channel; sounding; signal; processing

Following the recent approval by FCC and other regulatory bodies around the world for the unlicensed use of Ultra Wide Band (UWB) technology, UWB devices are currently under development for the mass consumer market mainly for use in personal entertainment applications and for use in short range wireless peer-to-peer pico area networks (WPAN). Due to the low power levels allowed for UWB transceivers, the range of a communications type UWB transmitter is limited to about 10 metres. To extend the range of UWB, it has been proposed to use fibre backbones to interconnect different piconets in a building. This program is directed at identifying the fundamental issues surrounding the use of UWB technology for imaging and for  high speed communications and the inter-connection of UWB piconets through backbone fibres. The emphasis will be on UWB channel characterization, and development of smart signal design, signal processing and measurement algorithms to avoid the introduction of unneeded interference into conventional systems such as 802.11 WLANs, and to enhance the performance of UWB receivers in the presence of narrowband interference. The research to be done may be summarized as follows: a) Carry out  measurements to characterise the wireless UWB channel for UWB communications applications in terms of impulse responses and propagation path loss subject to various conditions such as different building types and also different interference conditions. The measurement results will be used to generate reliable stochastic models for the UWB channel. b) Combined channel and signal-to-interference ratio (SIR) estimation and data detection algorithms for use in coded, cognitive UWB transceivers. Our developments will be based on the measured channel characteristics, typical phase noise masks for economical optical modulators and detectors and measured co-channel interference levels. The sought after algorithms will target UWB waveform design for interference avoidance and will be suitable for incorporation in software-based UWB transceivers. c) Investigation of the statistical characteristics of UWB interference as viewed by narrow-band receivers.

美国联邦通信委员会（FCC）和世界各地的其他监管机构最近批准了超宽带（UWB）技术的未经许可使用，目前正在开发面向大众消费市场的超宽带设备，主要用于个人娱乐应用和短距离无线点对点pico区域网络（WPAN）。由于UWB收发器允许的低功率水平，通信类型的UWB发射机的范围被限制在大约10米。为了扩大超宽带的覆盖范围，有人建议使用光纤骨干网将建筑物内不同的微网互连起来。该计划旨在确定围绕使用超宽带技术进行成像和高速通信以及通过骨干光纤进行超宽带微网互连的基本问题。重点将放在UWB信道特性、智能信号设计、信号处理和测量算法的开发上，以避免在802.11 wlan等传统系统中引入不必要的干扰，并提高UWB接收器在窄带干扰存在下的性能。所要做的研究可以概括如下：a)在不同的建筑类型和不同的干扰条件下，从脉冲响应和传播路径损耗方面进行测量，以表征用于超宽带通信应用的无线超宽带信道。测量结果将用于生成可靠的UWB信道随机模型。b)用于编码、认知超宽带收发器的组合信道和信号干扰比（SIR）估计和数据检测算法。我们的发展将基于测量的信道特性，经济型光学调制器和检测器的典型相位噪声掩模以及测量的同信道干扰水平。受追捧的算法将针对UWB波形设计以避免干扰，并将适用于基于软件的UWB收发器。c)从窄带接收机的角度研究超宽带干扰的统计特性。