[LabVIEW]Eye Pattern(眼图的应用)

最新推荐文章于 2020-11-09 23:38:08 发布

ourhonor

最新推荐文章于 2020-11-09 23:38:08 发布

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分类专栏： LabVIEW 文章标签： LABView 眼图

本文链接：https://blog.youkuaiyun.com/zzx2015/article/details/90436691

本文详细介绍了LabVIEW中如何使用眼图进行信号质量分析，揭示了眼图在通信系统调试和性能评估中的关键作用。通过实例展示了眼图如何帮助识别并解决噪声、码间干扰等问题。

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Introduction

In this lab, I learnt the knowledge about eye pattern, inter-symbol interference and raised-cosine function. I also tried to derive the formula of raised-cosine function to explore the effect of the value of α in functions htand Hω. Then I try to write the formula nodes in the case of different values of α by using knowledge of theory. As the result, I get three different types eye pattern.

The theoretical knowledge：

In telecommunication, an eye pattern, also known as an eye diagram, is an oscilloscope display in which a digital signal from a receiver is repetitively sampled and applied to the vertical input, while the data rate is used to trigger the horizontal sweep.

Several system performance measures can be derived by analyzing the display. If the signals are too long, too short, poorly synchronized with the system clock, too high, too low, too noisy, or to