论文标题
中型带无线通信
Mediumband Wireless Communication
论文作者
论文摘要
在无线通信中不可避免地，这种基本现象不可避免，并且几乎影响了现代无线通信系统的每个元素。多径对接收信号的影响取决于延迟扩展（即与不同多径成分相关的时间延迟的扩散）是否相对于无线通信系统的信号传导周期大小。在窄带系统中，延迟扩展约为信号传导期的十分之一（或更少）。宽带系统的延迟扩展和信号传导周期处于相同的数量级。在这两个极端之间，似乎存在着一个重要但被忽视的系统类别的延迟范围既不小也不足够大，以至于它们可以属于这两个基本类别。在本文中，多径对此类系统的影响随后被研究为中等带，其渠道的特征是紧凑的形式，以便能够对此类别的无线通信系统进行研究。
The fundamental phenomenon widely known as multipath is unavoidable in wireless communication, and affects almost every element of modern wireless communication systems. The impact of multipath on the received signal depends on whether the delay spread (i.e., spread of time delays associated with different multipath components) is large or small relative to the signalling period of the wireless communication system. In narrowband systems, the delay spread is about one tenth (or less) of the signalling period. The delay spread and the signalling period of broadband systems are in the same order of magnitude. In between these two extremes, there appears to exist an important, yet overlooked, class of systems whose delay spread is neither small nor large enough for them to fall into these two basic classes. In this paper, the effect of multipath on this class of systems denoted henceforth as mediumband is studied, and its channel is characterized in compact form in order to enable future research into this class of wireless communication systems.
