【作者】 唐建锋；

【导师】 汪一鸣；

【作者基本信息】 苏州大学 ， 通信与信息系统， 2005， 硕士

【摘要】 超宽带(UWB)通信具有数据速率高、功率谱密度低、定位精度高以及抗多径能力强等优点。超宽带技术已成为短距离无线通信领域研究与开发的热点。 本文首先论述了超宽带通信的基本原理、主要特点及其发展动态。接下来讨论了两种典型的超宽带信号模式及其各自的特点。接着讨论了几种典型的超宽带室内多径信道模型。然后着重围绕DS-UWB的多用户检测方案展开论述,其中首先讨论了几种常用的多用户检测技术,在此基础上提出一种基于自适应的DS-UWB多用户检测方案,并着重分析比较了采用不同扩频码和不同的采样速率时接收机的性能。 上述的研究工作,可以为实现超宽带通信系统的多用户检测提供可供参考的思想及方法。更多还原

【Abstract】 Since UWB technology has a lot of advantages such as high date rate, low power spectral density, high precision location identification and inherently exceptional multipath immunity, it has become the research focus in the wireless communication field.In this paper, the basic theory, the characteristics and the develop trends of UWB communication are introduced at first. Then two representative types of UWB signal models and their characteristics are discussed. Then we discuss several representative multipath channel model of UWB in the home. After that, we lay emphasis on the multiuser detection of DS-UWB receiver. Thereinto we first discuss some common technology of multiuser detection, then put forward a multiuser detection scheme of DS-UWB based on the adaptive method, and we compare the performance of receiver when the spreading codes and the sampling speed are different.All these study will provide some useful ideas and methods to achieve multiuser detection of UWB communication system.更多还原