A robust signal-detection method for ultra-wideband networks with uncontrolled interference
A robust signal-detection method for ultra-wideband networks with uncontrolled interference
复制标题
一种针对具有不受控干扰的超宽带网络的鲁棒信号检测方法
DOI：
10.1109/tmtt.2006.872071
复制
发表时间：
2006
影响因子：
4.3
通讯作者：
J. L. Boudec
中科院分区：
文献类型：
--
作者：
A. E. Fawal;J. L. Boudec
提出了一种多用户超宽带(UWB)脉冲无线电(IR)网络中非相干同步(信号捕获)的检测方法。它旨在解决在某些自组织网络中发生的用户间干扰(IUI)，在这些网络中，允许以不同的功率级别进行并发传输。在这种情况下，基于将接收到的IR信号与模板脉冲串(TPT)相关的传统检测方法并不总是表现良好。我们的建议的复杂性与传统方法相似。我们用IEEE P802.15.4a课题组提出的视距(LOS)和非视距(NLOS)办公室室内信道模型对其性能进行了评估，发现改进是显著的。我们还研究了并发传输具有相同跳时码的特殊情况，并且证明了它不会导致冲突。这样的场景出现在使用用于控制或广播目的的公共代码的自组织网络中。
We propose a novel detection method for noncoherent synchronization (signal acquisition) in multi-user ultra-wideband (UWB) impulse radio (IR) networks. It is designed to solve the inter-user interference (IUI) that occurs in some ad-hoc networks where concurrent transmissions are allowed with heterogeneous power levels. In such scenarios, the conventional detection method, which is based on correlating the received IR signal with a template pulse train (TPT), does not always perform well. The complexity of our proposal is similar to that of the conventional method. We evaluate its performance with the line-of-sight (LOS) and the non-LOS (NLOS) office indoor channel models proposed by the IEEE P802.15.4a study group and find that the improvement is significant. We also investigate the particular case where the concurrent transmissions have the same time-hopping code, and we show that it does not result in collision. Such scenarios appear in ad-hoc networks that employ a common code for control or broadcast purposes.