CPRI容器的字长、能力与CPRI速率的对应关系
选项 | Rate1 | Rate2 | Rate3 | Rate4 | Rate5 | Rate6 | Rate7 | Rate8 | Rate9 | Rate10 |
Rate倍数 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
码片倍数 | 1 | 2 | 4 | 5 | 8 | 10 | 16 | 20 | 24 | 48 |
Y值 | 1 | 2 | 4 | 5 | 8 | 10 | 16 | 20 | 24 | 48 |
bits/Y | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
字长bits | 8 | 16 | 32 | 40 | 64 | 80 | 128 | 160 | 192 | 384 |
数据words | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 |
基本帧中数据bits | 120 | 240 | 480 | 600 | 960 | 1200 | 1920 | 2400 | 2880 | 5760 |
I bits | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 |
Q Bits | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 |
单A*C Size | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 |
编码前速率 | 491.52 | 983.04 | 1966.08 | 2457.60 | 3932.16 | 4915.20 | 7864.32 | 9830.40 | 11796.48 | 23592.96 |
有效载荷比 | 0.94 | 0.94 | 0.94 | 0.94 | 0.94 | 0.94 | 0.94 | 0.94 | 0.94 | 0.94 |
有效载数据荷速率 | 460.80 | 921.60 | 1843.20 | 2304.00 | 3686.40 | 4608.00 | 7372.80 | 9216.00 | 11059.20 | 22118.40 |
链路编码 | 0.80 | 0.80 | 0.80 | 0.80 | 0.80 | 0.80 | 0.80 | 0.97 | 0.97 | 0.97 |
链路编码后速率M | 614.40 | 1228.80 | 2457.60 | 3072.00 | 4915.20 | 6144.00 | 9830.40 | 10137.60 | 12165.12 | 24330.24 |
采样率M | 3.84 | 7.68 | 15.36 | 19.2 | 30.72 | 38.4 | 61.44 | 76.8 | 92.16 | 184.32 |
采样周期(ns) | 260.41667 | 65.10417 | 16.27604 | 10.41667 | 4.06901 | 2.604167 | 1.017253 | 0.651042 | 0.452112 | 0.113028 |
基本帧周期ns | 260.41667 | 260.4167 | 260.4167 | 260.4167 | 260.4167 | 260.4167 | 260.4167 | 260.4167 | 260.4167 | 260.4167 |
基本帧中symbol的 能力个数 |
4 | 8 | 16 | 20 | 32 | 40 | 64 | 80 | 96 | 192 |
CPRI 2:1.2G=》 1 Word =》8bits
CPRI3:2.4G =》2 Word =》16bits
CPR5: 4.9G =》4 word =》 32bits
CPRI7:9.8G =》8 word =》 64bits