高速链路设计的通道工作裕量“COM”,全称:Channel Operating Margin,可翻译成通道工作裕量。“COM”是当前业界物理层设计人员早期评估开发设计空间以及设计优化通道物理参数的强大工具,因此可以克服眼图和 BE R等传统的通道性能指标分析的局限。通道工作裕量(COM),以dB表示的信噪比,它是一个相对较新的品质因数,它同时...
Channel Operating Margin (COM) is a figure of merit for a passive channel expressed in decibels. COM gives insight about the quality of the passive channel design. It is calculated using the ratio of signal amplitude factors to noise amplitude factors. Channel bit rate, insertion loss, return ...
Channel Operating Margin(COM)——通道裕量,是IEEE 802.3bj-2014 100 Gb/s背板操作和铜缆以太网标准中介绍的合规性检查方法。 作为时域规范,其定义如下: COM = 20 log10(As/Ani) 其中,As和Ani是指接收器输出端的信号和噪声幅值,并考虑整个端对端通道特性(包括发射器(TX)、接收器(RX)和通道损耗)的影响。A...
对于网络通讯行业而言,有时候想要获得TX/RX端的AMI模型比较困难,为了解决这个问题,IEEE提出了COM仿真手段,COM的全称是:Channel Operating Margin,即通道裕量分析。 COM仿真是基于统计的方法去分析通道性能的一种方法,有点类似于信噪比: COM=20∗log10(AsN) 其中,N表示峰值卷积BER噪声,As表示参考采样器的可用信号...
COM - Channel Operating Margin, is a copper link margin and pass/fail tool popular in PAM-2 and PAM-4 25 Gb/s and faster standards. COM relies on a number of simplifications, e.g. the linearity of the link and the validity of superposition of channel's edge or symbol response; the ...
Channel Operating Margin (COM) is a figure of merit for a passive channel expressed in decibels and is calculated using the ratio of signal amplitude factors to noise amplitude factors. Channel bit rate, insertion loss, return loss, cross-coupling, transmitter and receiver equalization and IC pack...
Channel operating margin (COM) is a standardized method of determining the overall figure of merit of a channel. Some of the traditional channel parameters like IL, RL, ICN/ICR(integrated crosstalk noise/ratio) are informative only. The COM calculation code is a built-in feature for most of ...
Channel Operating Margin (COM) for PAM-4 Links
Channel operating margin (COM)7is a system-level metric approach adopted by the IEEE 802.3ck standard to validate the performance of a serial link. As part of COM, there is an effective return loss (ERL) metric that factors in reflections caused by impedance mismatches at the pins of the ...
Channel Operating Margin (COM) 線路設計建議 View More 訊號測試驗證 Signal Test Verification 100/1000Base-T Ethernet Tx 10 Gigabit Ethernet Tx 25, 40 and 100 Gigabit Ethernet 100/1000Base-T Ethernet Tx 10 Gigabit Ethernet Tx 25, 40 and 100 Gigabit Ethernet ...