一种新的GFP框架描绘方法

A. Gupta, D. Chadha
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引用次数: 0

摘要

ITU-T建议G.7041/Y。1303定义了通用框架过程(GFP)。它还讨论了在八位对齐的可变长度GFP映射数据流中实现多个“虚拟帧”来描述GFP帧,以显着提高采集速度。在本文中,我们讨论了一种实现这样一个帧的新方法,该帧在单个时钟周期内执行最后2字节的CRC16计算并与下2字节进行比较。通过这种方法,我们可以通过同一块硬件在每个时钟周期上搜索可能的GFP帧边界,因此我们可以用相对较少的硬件实现相同的采集速度,而不是需要多个时钟周期来执行此CRC16计算的方法
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Novel Approach to GFP Frame Delineation
ITU-T Recommendation G.7041/Y.1303 defines Generic Framing Procedure (GFP). It also discusses about the implementation of multiple "virtual framers" for GFP frame delineation in an octet-aligned, variable-length GFP mapped data stream to improve the acquisition speed significantly. In this paper, we discuss a new approach to implement one such framer which performs computation of CRC16 over last 2 bytes and its comparison with next 2 bytes on a single clock cycle. With this approach, we become able to search for a possible GFP frame boundary on every clock cycle by the same piece of hardware and therefore we can achieve the same acquisition speed with comparatively lesser hardware then the methods which takes more then one clock cycle to perform this CRC16 calculation
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