基于统计算法的DDR4 DQ信号误码率眼图的实现

本课题是最大失真分析方法的后续研究,目的是利用链路系统的单-位响应噪声模型来预测高速链路误码率。文中基于线性时不变理论,利用统计算法对系统进行建模,快速仿真出DQ数据在符号间干扰和串扰影响下的误码率眼图。实现了DQ Read数据误码率眼图的预测,并对眼图结果进行了分析。结果表明,该算法能够快速有效地实现ISI和串扰对DQ数据误码率眼图影响的预测,为进一步研究抖动和接收器判决时刻的不准确性等因素对误码率的影响做了准备。

The Realization of DQ BER Eye Diagram Based on Statistical Method

Following closely from PDA analysis,this project is intended to develop an algorithm that employs single-bit response to forecast eye diagram and BER for a high speed system.With Linear time-invariant (LTI) theorems used regularly,coupling with the statistical signaling,statistical methods are introduced to calculate the BER eye diagram of DQ signal under the influence of inter symbol interference and crosstalk.The results show that fast and effective prediction is achieved,which prepares the ground for further study of the impact on BER of jitter and the uncertainty of the time of receiver judgment.