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: 2008
• 资助国家: 加拿大
• 起止时间: 2008-01-01 至 2009-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=390441
• 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.

在FCC和世界各地的其他管理机构最近批准了超宽带（UWB）技术的未许可使用之后，UWB设备目前正在开发中，用于大众消费市场，主要用于个人娱乐应用和用于短距离无线对等皮科区域网络（WPAN）。由于UWB收发器所允许的低功率电平，通信类型UWB发射器的范围被限制为大约10米。为了扩展UWB的范围，已经提出使用光纤骨干来互连建筑物中的不同微微网。该计划旨在确定围绕UWB技术用于成像和高速通信以及UWB微微网通过骨干光纤互连的基本问题。重点将是UWB信道特性，智能信号设计，信号处理和测量算法的发展，以避免不必要的干扰，如802.11无线局域网的传统系统的引入，并提高UWB接收机的性能在窄带干扰的存在。a）进行测量，以根据受到各种条件（例如不同建筑物类型以及不同干扰条件）的脉冲响应和传播路径损耗来估计用于UWB通信应用的无线UWB信道。测量结果将被用来生成可靠的随机模型的UWB信道。B）组合的信道和信号干扰比（SIR）估计和数据检测算法，用于编码的认知UWB收发器。我们的发展将基于测得的信道特性，典型的相位噪声掩模经济的光调制器和检测器和测得的同信道干扰水平。追求后的算法将目标UWB波形设计的干扰避免，并将适合于纳入基于软件的UWB收发器。c）研究窄带接收机观察到的UWB干扰的统计特性。