超宽带(UWB)无线定位技术

摘要

随着无线通信技术的高速发展，人们对无线通信系统的要求日益提高，超宽带（Ultra-Wideband，UWB）技术凭借其高速率的数据传输、极低的功耗以及其精准的定位等性能，逐渐成为无线通信领域研究的一个热点，受到了广泛的关注。

本文首先介绍了超宽带（UWB）技术的历史背景及其定义和特点。其次针对超宽带（UWB）的原理及其波形进行了研究和探讨。然后论述了超宽带（UWB）的调制与接收，并主要分析了PPM-TH-UW，PAM-DS-UWB，MB-OFDM-UWB这三种调制方式。最后本文重点介绍了超宽带（UWB）的无线定位技术，首先是对其发展和定义进行了概述，其次分别介绍了超宽带无线定位的参数及其几何模型，重点对UWB定位中TOA 的算法进行了研究，最后通过仿真对定位算法的实现做出了验证并得到了重要结论。关键词：超宽带（UWB），无线定位技术

论文类型：理论研究性

Title：Ultra-wideband(UWB)wireless positioning technology

Major：Communications technology

Name：XXXX Signature:

Supervisor：XXXX Signature:

Abstract

With the rapid development of wireless communication technology, the wireless communication system of the increasing demand, ultra wideband (Ultra-Wideband, UWB) technology by virtue of its high data rate, low power consumption and its precise positioning performance, has become the field of wireless communication research a hot spot, has received the widespread attention.

This thesis first introduces the ultra wideband (UWB) technology to the historical background and the definition and characteristics of. Secondly, ultra wideband (UWB) principle and waveform are studied and discussed. And then discusses the ultra wideband (UWB) modulation and receiving, and primary analysis of PPM-TH-UW, PAM-DS-UWB, MB-OFDM-UWB the three modulation methods. Finally, this thesis introduces the ultra wideband (UWB) wireless positioning technology, first of its development and definition are outlined, followed by introduces UWB wireless positioning parameters and geometry model, focus on the localization of UWB TOA algorithm is studied, finally through the simulation of positioning algorithm to verify and obtained important conclusion.

Key words:ultra wideband (UWB), wireless positioning technology.

Type of thesis:theoretical research

目录

第一章超宽带（UWB） (3)

1.1 UWB技术的发展 (3)

1.2 UWB的定义 (3)

1.3 UWB的技术特点 (5)

第二章UWB的原理及其波形 (6)

2.1 UWB的原理 (6)

2.2 UWB信号的产生 (6)

2.3 UWB信号的波形 (6)

2.1.1 UWB信道模型 (6)

2.1.2高斯脉冲信号 (7)

第三章UWB的调制和接收 (9)

3.1 UWB典型调制方式 (9)

3.1.1 PPM-TH-UWB (9)

3.1.2 PAM-DS-UWB (10)

3.3.3 MB-OFDM-UWB (11)

3.2 UWB信号的接收 (12)

3.2.1无多径时AWGN信道的最佳接收机 (13)

3.2.2多径信道的Rake接收机 (14)

第四章UWB无线定位系统 (17)

4.1引言 (17)

4.2无线定位技术 (17)

4.2.1无线定位的概述 (17)

4.2.2 UWB无线定位的参数 (19)

4.2.3 UWB无线定位的几何模型 (24)

4.3 UWB定位中TOA估计算法 (28)

4.3.1 TOA估计的信号模型 (29)

4.3.2 基于TOA位置估计算法 (31)

4.4 LSE仿真实验及其结果分析 (33)

4.5 本章小结 (37)

总结 (38)

致谢 (39)

参考文献 (40)