A Robust Algorithm for Eye-Diagram Analysis

Jeffrey A. Jargon

doi:10.1109/JLT.2008.917313

A Robust Algorithm for Eye-Diagram Analysis

2008-11-01

20

PRE

AI

DOI：10.1109/JLT.2008.917313

原文链接

原文求助

摘要

En 中文

We present a new method for analyzing eye diagrams that always provides a unique solution by making use of a robust, least-median-of-squares (LMS) location estimator. In contrast to commonly used histogram techniques, the LMS procedure is insensitive to outliers and data distributions. Our motivation for developing this algorithm is to create an independent, benchmark method that is both amenable to a thorough uncertainty analysis and can function as a comparison tool since no standardized industry algorithms currently exist. Utilizing this technique, we calculate the fundamental parameters of an eye diagram, namely the one and zero levels, and the time and amplitude crossings. With these parameters determined, we can derive various performance metrics, such as extinction ratio and root-mean-square jitter, and perform eye-mask alignment. In addition to describing our algorithm in detail, we compare results computed with this method to those of a commercial oscilloscope, and obtain excellent agreement. Finally, we suggest new definitions of eye height and eye width that are more robust than those that are commonly used.

Keyword:

Extinction ratio

eye diagram

least-median-of-squares (LMS) location estimator

robust statistics

A Robust Algorithm for Eye-Diagram Analysis

摘要

期刊

机构

引用论文