Using system simulation to evaluate design choices for automotive ethernet over plastic optical fiber
Using system simulation to evaluate design choices for automotive ethernet over plastic optical fiber
复制标题
使用系统仿真评估塑料光纤汽车以太网的设计选择
DOI：
10.1117/12.2291790
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发表时间：
2018
影响因子：
4.7
通讯作者：
R. Scarmozzino
中科院分区：
文献类型：
--
作者：
P. Mena;E. Ghillino;D. Richards;S. Hyuga;M. Nakai;M. Kagami;R. Scarmozzino
先进驾驶辅助系统（ADAS）和信息娱乐技术不断增长的带宽需求使塑料光纤千兆以太网（POF）成为下一代汽车数据网络的自然选择，特别是考虑到最近批准的用于POF千兆以太网传输的IEEE 802.3bv标准。基于POF的传输提供了低成本、重量轻、易于端接、耐用性和抗电磁干扰（EMI）的优点，而千兆以太网扩展了当前由面向媒体的系统传输（MOST）提供的150 Mb/s的最大数据速率。因此，我们研究了影响基于POF的汽车数据链路性能的重要设计选择，数据速率高达或超过1 Gb/s，以及不同的调制格式选择，包括NRZ和PAM-n。由于仿真是一种有效且具有成本效益的解决方案，用于研究多种设计选择的复杂相互作用，而无需物理原型，因此我们的分析基于一个综合的建模框架，用于集成大芯阶跃折射率光纤和光纤到光纤连接器的光通信系统。我们研究预期的系统性能的带宽和BER的不同选择的链路长度和连接器数量，包括IEEE 802.3bv的目标15米，四个连接器和40米没有连接器。此外，我们还考虑了连接器未对准（横向和纵向）和源发射剖面（根据其环绕角通量或EAF测量）的影响，这也直接影响链路带宽。
The growing bandwidth demands of advanced driver assistance systems (ADAS) and infotainment technologies make Gigabit Ethernet over plastic optical fiber (POF) a natural choice for next-generation automotive data networks, especially in light of the recent approval of the IEEE 802.3bv standard for Gigabit Ethernet transmission over POF. POF-based transmission provides the advantages of low cost, light weight, easy termination, durability, and immunity to electromagnetic interference (EMI), while Gigabit Ethernet extends the current maximum data rate of 150 Mb/s provided by Media Oriented Systems Transport (MOST). Thus, we examine important design choices that impact the performance of POF-based automotive data links for data rates up to and beyond 1 Gb/s and different choices of modulation format, including NRZ and PAM-n. Because simulation is an efficient and cost-effective solution for studying the complex interplay of multiple design choices without requiring physical prototypes, we base our analysis on a comprehensive modeling framework for optical communication systems incorporating large-core step-index fiber and fiber-to-fiber connectors. We study anticipated system performance in terms of bandwidth and BER for different choices of link length and connector count, including the IEEE 802.3bv targets of 15 meters with four connectors and 40 meters with no connectors. In addition, we consider the impact of connector misalignments (both lateral and longitudinal) and source launch profile (measured in terms of its encircled angular flux, or EAF), which also directly affect link bandwidth.