这是本文档旧的修订版！
====== LFSR ======
原文：https://blog.csdn.net/little_cats/article/details/104488780
1. Galois型实现
{{:协议学习:pasted:20240708-110513.png?nolink&800}}
2. Fibonacci型实现
{{:协议学习:pasted:20240708-110545.png?nolink}}
3. 多项式表
^ LFSR位数 ^ 状态周期 ^ 抽头配置 ^ LFSR位数 ^ 状态周期 ^ 抽头配置 ^ | 2 | 3 | 2，1 | 17 | 131,071 | 17, 14 | | 3 | 7 | 3, 2 | 18 | 262,143 | 18, 11 | | 4 | 15 | 4, 3 | 19 | 524, 287 | 19, 6, 2, 1, | | 5 | 31 | 5, 3 | 20 | 1,048,575 | 20, 17 | | 6 | 63 | 6, 5 | 21 | 2,097,151 | 21, 19 | | 7 | 127 | 7, 6 | 22 | 4,194,303 | 22, 21 | | 8 | 255 | 8, 6, 5, 4, | 23 | 8,388,607 | 23, 18 | | 9 | 511 | 9, 5 | 24 | 16,777,215 | 24, 23, 22, 17, | | 10 | 1,023 | 10, 7 | 25 | 33,554,431 | 25, 22 | | 11 | 2,047 | 11, 9 | 26 | 67,108,963 | 26, 6, 2, 1, | | 12 | 4,095 | 12, 6, 4, 1, | 27 | 134,217,727 | 27, 5, 2, 1, | | 13 | 8,191 | 13, 4, 3, 1, | 28 | 268,435,455 | 28, 25 | | 14 | 16,383 | 14, 5, 3, 1, | 29 | 536,870,911 | 29, 27 | | 15 | 32,767 | 15, 14 | 30 | 1,073,741,823 | 30, 6, 4, 1, | | 16 | 65,535 | 16, 15, 13, 4, | 31 | 2,147,483,646 | 31, 28 | | 32 | 4,294,967,294 | 32, 22, 2, 1, | 32 | 4,294,967,294 | 32, 22, 2, 1, |