Study on Reliable Low-power Wireless Communication Systems Using Multiband Pulsed UWB Technlogy

采用多频带脉冲UWB技术的可靠低功耗无线通信系统研究

基本信息

批准号：
22560366
负责人：
SASAKI Shigenobu
金额：
$ 1.83万
依托单位：
Niigata University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2010
资助国家：
日本
起止时间：
2010 至 2012
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22560366/
关键词：
UWB 信頼性パケット伝送同期高信頼伝送同期補足同期捕捉

项目摘要

The goal of this project is developing reliable low-power wireless communications by using multiband pulsed ultra wide band (UWB) technology. In this project, the following topics are investigated.First, the performance of direct sequence ultra wide band (DS/UWB) systems is evaluated under the multipath fading environment from the viewpoint of ensuring a certain level of error rate performance by using cumulative distribution function (CDF) of bit error rate.Second, performance of cooperative communications for DS/UWB in multipath channel is investigated. According to the computer simulation results, it is found that use of cooperative communications is effective to improve the performance in non line-of-sight multipath channel comparing with the use of conventional diversity reception in DS/UWB.Third topic is the acquisition performance DS/UWB communication systems, especially in packet communications. In wireless packet transmission, the acquisition must be completed in the preamble duration in the packet. In this project, RAKE combining and verification mode is employed in DS/UWB packet transmission to combat multipath fading. According to the simulation results under the IEEE802.15.4a multipath fading environment, significant improvement of acquisition probability is achieved by using RAKE combining. Also, mean acquisition time becomes shorter when the verification mode is equipped with the DS/UWB acquisition system. Also, using peak detector and interval estimation is proposed to achieve faster and more accurate acquisition in multipath fading environment. Computer simulation results show that the peak detection and interval estimation is effective to capture the accurate peak of the matched filter output in the DS/UWB acquisition. In addition, thereduction of the acquisition time is achievable by optimal design of the capturing interval for the peak detection.

该项目的目的是通过使用多播脉冲超宽带（UWB）技术来开发可靠的低功率无线通信。在该项目中，研究了以下主题。首先，在多路径褪色环境下进行了直接序列超宽频段（DS/UWB）系统的性能，从确保通过使用位错误率的累积分布函数（CDF）确保多级误差率的累积分配功能（CDF）的多率。根据计算机仿真结果，发现合作通信的使用有效地提高了非视线多路径通道的性能，并且与在DS/UWB中使用常规多样性接收相比。三分之二的主题是Accerition Performance DS/UWB通信系统，尤其是在数据表通信中。在无线数据包传输中，必须在数据包中的序言持续时间完成采集。在此项目中，DS/UWB数据包传输中采用了耙子组合和验证模式来对抗多径褪色。根据IEEE802.15.4a多径褪色环境下的仿真结果，通过使用耙子组合可以实现采集概率的显着提高。同样，当验证模式配备了DS/UWB采集系统时，平均采集时间变短。同样，提出了使用峰值检测器和间隔估计，以在多径褪色环境中更快，更准确地获取。计算机仿真结果表明，峰检测和间隔估计有效地捕获DS/UWB采集中匹配过滤器输出的准确峰。此外，通过最佳设计捕获间隔的峰值检测，可以实现采集时间的处理。