| 研究片内多径分离技术在基于RSSI定位中的应用 |
| |
| 引用本文： | 罗炬锋,邱云周,付耀先,袁晓兵.研究片内多径分离技术在基于RSSI定位中的应用[J].电子与信息学报,2011,33(4):891-895. |
| |
| 作者姓名： | 罗炬锋 邱云周 付耀先 袁晓兵 |
| |
| 作者单位： | 中国科学院上海微系统与信息技术研究所无线传感器网络与通信重点实验室; |
| |
| 基金项目： | 国家重大专项(2009ZX03004-001)资助课题 |
| |
| 摘 要： | 无线传感器网络中基于接收信号强度指示(RSSI)的定位易受多径干扰。传统的基于RSSI定位方法主要通过增加测距样本来抵抗多径干扰，而在物理层研究抗多径干扰的较少。该文将片内多径分离技术应用于基于RSSI的定位中，通过抽取每个码片的第1个采样点进行相关解扩得到分离多径后的直达径，并求其功率得到抗多径干扰的RSSI值。理论分析其多径的分离能力，信噪比损失情况。最后通过仿真比较了传统方法与该文方法求得的RSSI值方差，该文方法在多径信道下的方差更小。
|
| 关 键 词： | 无线传感器网络 直接序列扩频 定位 接收信号强度指示 片内多径分离 |
| 收稿时间： | 2010-07-21 |
Research on Separation of Subchip Multipath Components for RSSI-based Location Application |
| |
| Luo Ju-feng,Qiu Yun-zhou,Fu Yao-xian,Yuan Xiao-bing.Research on Separation of Subchip Multipath Components for RSSI-based Location Application[J].Journal of Electronics & Information Technology,2011,33(4):891-895. |
| |
| Authors: | Luo Ju-feng Qiu Yun-zhou Fu Yao-xian Yuan Xiao-bing |
| |
| Institution: | Luo Ju-feng Qiu Yun-zhou Fu Yao-xian Yuan Xiao-bing(Key Lab.of Wireless Sensor Network & Communication,Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences,Shanghai 200050,China) |
| |
| Abstract: | The Received Signal Strength Indicator(RSSI) based location is easy to be affected by multipath interference in wireless sensor networks.The traditional RSSI-based location methods usually increase the number of samples to resist multipath interference while few works are done on physical layer.This paper studies to separate subchip multipath components for RSSI-based location application,the direct path can be separated among multipath by despreaded using the first sample of each chip,after calculating the... |
| |
| Keywords: | Wireless sensor networks Direct Sequence Spread Spectrum(DSSS) Location Received Signal Strength Indicator(RSSI) Separation of subchip multipath components |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《电子与信息学报》浏览原始摘要信息 |
| 点击此处可从《电子与信息学报》下载免费的PDF全文 |
