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802.11b、802.11g、802.11a、802.11n、802.11ac速率计算方式及速率对应表

作者：互联网

Wi-Fi理论带宽计算方式

计算公式
Wi-Fi理论带宽 =（符号位长×码率×子载波数量×空间流）÷ 传输时间

符号位长

一个Symbol能承载的bit数量，这个与调试有关。

11a/g11n11ac11ax
最大调制方式64QAM64QAM256QAM1024QAM
bit数/Symbol66810

码率

Wi-Fi在传输时，根据空口环境的好坏，会加入不同数量的纠错码，用来提高传输的可靠性，空口环境越差，纠错码越多，真是数据占比越少，码率越低，反之亦然。目前11n、11ac和11ax最高码率都为5/6。

数据子载波数量

频宽11n11ac11ax
有效子载波数量HT205252234
HT40108108468
VHT80N/A234980
VHT160N/A4681960

传输时间

传输时间是传输一个Symbol需要的时间加上一个间隙（GI）。为了避免Symbol之间的干扰，相邻两个Symbol之间需要有一定的间隙。不同Wi-Fi标准的间隙也不同。

传输时间=Symbol+GI时间

如下表所示：

11b/g/n/ac11ax
Symbol3.2us12.8us
Short GI0.4usN/A
GI0.8us0.8us
2*GIN/A1.6us
4*GIN/A3.2us

我们以最高码率（5/6）、最大空间流（8*8)、最大频宽（160M）来计算一下11ax的最高速率。

公式： Wi-Fi理论带宽 =（符号位长×码率×子载波数量×空间流）÷ 传输时间

           11ax理论带宽 = （10bit × 5/6 × 1960 * 8) ÷ (12.8 + 0.8) = 9607.86Mbps

802.11b速率对应表

802.11b
空间流调制方式速率(Mbps)
1DSSS1
DSSS2
CCK5.5
CCK11

802.11a/g速率对应表

802.11a/g速率
GI (800nS)
空间流调制方式码率有效子载波数量每个子载波携带数据位速率（Mbps）
1BPSK1/24816
BPSK3/419
QPSK1/2212
QPSK3/4218
16-QAM1/2424
16-QAM3/4436
64-QAM2/3648
64-QAM3/4654

802.11n速率对应表

1条流速率表

802.11nHT20(Mbps)HT40(Mbps)
GI(nS)GI(nS)
空间流MCS调制方式码率有效子载波数量每个子载波携带数据位800400800400
10BPSK1/2

HE20:52

HE40:108

16.57.213.515.0
1QPSK1/2213.014.427.030.0
2QPSK3/4219.521.740.545.0
316-QAM1/2426.028.954.060.0
416-QAM3/4439.043.381.090.0
564-QAM2/3652.057.8108.0120.0
664-QAM3/4658.565.0121.5135.0
764-QAM5/6665.572.2135.0150.0

2条流速率表

802.11nHT20(Mbps)HT40(Mbps)
GI(nS)GI(nS)
空间流MCS调制方式码率有效子载波数量每个子载波携带数据位800400800400
20BPSK1/2

HE20:52

HE40:108

113.014.427.030.0
1QPSK1/2226.028.954.060.0
2QPSK3/4239.043.381.090.0
316-QAM1/2452.057.8108.0120.0
416-QAM3/4478.086.7162.0180.0
564-QAM2/36104.0115.6216.0240.0
664-QAM3/46117.0130.0243.0270.0
764-QAM5/66130.0144.4270.0300.0

3条流速率表

802.11nHT20(Mbps)HT40(Mbps)
GI(nS)GI(nS)
空间流MCS调制方式码率有效子载波数量每个子载波携带数据位800400800400
30BPSK1/2

HE20:52

HE40:108

119.521.740.545.0
1QPSK1/2239.043.381.090.0
2QPSK3/4258.565.0121.5135.0
316-QAM1/2478.086.7162.0180.0
416-QAM3/44117.0130.0243.0270.0
564-QAM2/36156.0173.3324.0360.0
664-QAM3/46175.0195.0364.5405.0
764-QAM5/66195.0216.7405.0450.0

 4条流速率表

802.11nHT20(Mbps)HT40(Mbps)
GI(nS)GI(nS)
空间流MCS调制方式码率有效子载波数量每个子载波携带数据位800400800400
40BPSK1/2

HE20:52

HE40:108

126.028.954.060.0
1QPSK1/2252.057.8108.0120.0
2QPSK3/4278.086.7162.0180.0
316-QAM1/24104.0115.6216.0240.0
416-QAM3/44156.0173.3324.0360.0
564-QAM2/36208.0231.1432.0480.0
664-QAM3/46234.0260.0486.0540.0
764-QAM5/66260.0288.9540.0600.0

802.11ac速率对应表

1条流速率表

802.11acHT20(Mbps)HT40(Mbps)HT80(Mbps)HT160(Mbps)
GI(nS)GI(nS)GI(nS)GI(nS)
空间流MCS调制方式码率有效子载波数量每个子载波携带数据位800400800400800400800400
10BPSK1/2

HE20:52

HE40:108

HE80:234

HE160:468

16.57.213.515.029.332.558.565.0
1QPSK1/2213.014.427.030.058.565.0117.0130.0
2QPSK3/4219.521.740.545.087.897.5175.5195.0
316-QAM1/2426.028.954.060.0117.0130.0234.0260.0
416-QAM3/4439.043.381.090.0175.5195.0351.0390.0
564-QAM2/3652.057.8108.0120.0234.0260.0468.0520.0
664-QAM3/4658.565.0121.5135.0263.3292.5526.5585.0
764-QAM5/6665.072.2135.0150.0292.5325.0585.0650.0
8256-QAM3/4878.086.7162.0180.0351.0390.0702.0780.0
9256-QAM5/68----------180.0200.0390.0433.3780.0866.7

2条流速率表

802.11acHT20(Mbps)HT40(Mbps)HT80(Mbps)HT160(Mbps)
GI(nS)GI(nS)GI(nS)GI(nS)
空间流MCS调制方式码率有效子载波数量每个子载波携带数据位800400800400800400800400
20BPSK1/2

HE20:52

HE40:108

HE80:234

HE160:468

113.014.427.030.058.565.0117.0130.0
1QPSK1/2226.028.954.060.0117.0130.0234.0260.0
2QPSK3/4239.043.381.090.0175.5195.0351.0390.0
316-QAM1/2452.057.8108.0120.0234.0260.0468.0520.0
416-QAM3/4478.086.7162.0180.0351.0390.0702.0780.0
564-QAM2/36104.0115.6216.0240.0468.0520.0936.01040.0
664-QAM3/46117.0130.0243.0270.0526.0585.01053.01170.0
764-QAM5/66130.0144.4270.0300.0585.0650.01170.01300
8256-QAM3/48156.0173.3324.0360.0702.0780.01404.01560
9256-QAM5/68----------360.0400.0780.0866.71560.01733.3

3条流速率表

802.11acHT20(Mbps)HT40(Mbps)HT80(Mbps)HT160(Mbps)
GI(nS)GI(nS)GI(nS)GI(nS)
空间流MCS调制方式码率有效子载波数量每个子载波携带数据位800400800400800400800400
30BPSK1/2

HE20:52

HE40:108

HE80:234

HE160:468

119.521.740.545.087.897.5175.5195.0
1QPSK1/2239.043.381.090.0175.5195.0351.0390.0
2QPSK3/4258.565.0121.5135.0263.3292.5526.5585.0
316-QAM1/2478.086.7162.0180.0351.0390.0702.0780.0
416-QAM3/44117.0130.0243.0270.0526.5.0585.01053.01170.0
564-QAM2/36156.0173.3324.0360.0702.0780.01404.01560.0
664-QAM3/46175.5195.0364.5405.0789.8877.5.01579.51755.0
764-QAM5/66195.0216.7405.0450.0877.5975.01755.01950.0
8256-QAM3/48234.0260.0486.0540.01053.01170.02106.02340.0
9256-QAM5/68----------540.0600.01170.01300.02340.02600.0

4条流速率表

802.11acHT20(Mbps)HT40(Mbps)HT80(Mbps)HT160(Mbps)
GI(nS)GI(nS)GI(nS)GI(nS)
空间流MCS调制方式码率有效子载波数量每个子载波携带数据位800400800400800400800400
40BPSK1/2

HE20:52

HE40:108

HE80:234

HE160:468

126.028.954.060.0117.0130.0234.0260.0
1QPSK1/2252.057.8108.0120.0234.0260.0468.0520.0
2QPSK3/4278.086.7162.0180.0351.0390.0702.0780.0
316-QAM1/24104.0115.6216.0240.0468.0520.0936.01040.0
416-QAM3/44156.0173.3324.0360.0702.0780.01404.01560.0
564-QAM2/36208.0231.1432.0480.0936.01040.01872.02080.0
664-QAM3/46234.0260.0486.0540.01053.01170.02106.02340.0
764-QAM5/66260.0288.9540.0600.01170.01300.02340.02600.0
8256-QAM3/48312.0346.7648.0720.01404.01560.02808.03120.0
9256-QAM5/68----------720.0800.01560.01733.33120.03466.7

 5条流速率表

802.11acHT20(Mbps)HT40(Mbps)HT80(Mbps)HT160(Mbps)
GI(nS)GI(nS)GI(nS)GI(nS)
空间流MCS调制方式码率有效子载波数量每个子载波携带数据位800400800400800400800400
50BPSK1/2

HE20:52

HE40:108

HE80:234

HE160:468

132.536.167.575.0146.3162.5292.5325.0
1QPSK1/2265.072.2135.0150.0292.5325.0585.0650.0
2QPSK3/4297.5108.3202.5225.0438.8487.5877.5975.0
316-QAM1/24130.0144.4270.0300.0585.0650.01170.01300.0
416-QAM3/44195.0216.7405.0450.0877.5975.01755.01950.0
564-QAM2/36260.0288.9540.0600.01170.01300.02340.02600.0
664-QAM3/46292.5325.0607.5675.01316.31462.52632.52925.0
764-QAM5/66325.0361.1675.0750.01462.51625.02925.03250.0
8256-QAM3/48390.0433.3810.0900.01755.01950.03510.03900.0
9256-QAM5/68----------900.01000.01950.02166.73900.04333.3

 6条流速率表

802.11acHT20(Mbps)HT40(Mbps)HT80(Mbps)HT160(Mbps)
GI(nS)GI(nS)GI(nS)GI(nS)
空间流MCS调制方式码率有效子载波数量每个子载波携带数据位800400800400800400800400
60BPSK1/2

HE20:52

HE40:108

HE80:234

HE160:468

139.043.381.090.0175.5195.0351.0390.0
1QPSK1/2278.088.7162.0180.0351.0390.0702.0780.0
2QPSK3/42117.0130.0243.0270.0526.5585.01053.01170.0
316-QAM1/24156.0173.3324.0360.0702.0780.01404.01560.0
416-QAM3/44234.0260.0486.0540.01053.01180.02106.02340.0
564-QAM2/36312.0346.7648.0720.01404.01560.02808.03120.0
664-QAM3/46351.0390.0729.0810.01579.51755.03159.03510.0
764-QAM5/66390.0433.3810.0900.01755.01950.03510.03900.0
8256-QAM3/48468.0520.0972.01080.02106.02340.04212.04680.0
9256-QAM5/68----------1080.01200.02340.02600.04680.05200.0

7条流速率表

802.11acHT20(Mbps)HT40(Mbps)HT80(Mbps)HT160(Mbps)
GI(nS)GI(nS)GI(nS)GI(nS)
空间流MCS调制方式码率有效子载波数量每个子载波携带数据位800400800400800400800400
70BPSK1/2

HE20:52

HE40:108

HE80:234

HE160:468

145.050.694.5105.0204.8227.5409.5455.0
1QPSK1/2291.0101.1189.0210.0409.5455.0819.0910.0
2QPSK3/42136.5151.7283.5315.0614.3682.51228.51365.0
316-QAM1/24182.0202.2378.0420.0819.0910.01638.01820.0
416-QAM3/44273.0303.3567.0630.01228.51365.02457.02730.0
564-QAM2/36364.0404.4756.0840.01638.01820.03276.03640.0
664-QAM3/46409.5455.0850.0945.01842.82047.53685.54095.0
764-QAM5/66455.0505.6945.01050.02047.52275.04095.04550.0
8256-QAM3/48546.0606.71134.01260.02457.02730.04914.05460.0
9256-QAM5/68----------1260.01400.02730.03033.35460.06066.7

8条流速率表

802.11acHT20(Mbps)HT40(Mbps)HT80(Mbps)HT160(Mbps)
GI(nS)GI(nS)GI(nS)GI(nS)
空间流MCS调制方式码率有效子载波数量每个子载波携带数据位800400800400800400800400
80BPSK1/2

HE20:52

HE40:108

HE80:234

HE160:468

152.057.8108.0120.0234.0260.0468.0520.0
1QPSK1/22104.0115.6216.0240.0468.0520.0936.01040.0
2QPSK3/42156.0173.3324.0360.0702.0780.01404.01560.0
316-QAM1/24208.0231.1432.0480.0936.01040.01872.02080.0
416-QAM3/44312.0346.7648.0720.01404.01560.02808.03120.0
564-QAM2/36416.0462.2864.0960.01872.02080.03744.04160.0
664-QAM3/46468.0520.0972.01080.02106.02340.04212.04680.0
764-QAM5/66520.0577.81080.01200.02340.02600.04680.05200.0
8256-QAM3/48624.0693.31296.01440.02808.03120.05616.06240.0
9256-QAM5/68----------1440.01600.03120.03466.76240.06933.3

参考链接

11n、11ac和11ax速率表_肉冬瓜的博客-CSDN博客

 

标签：ac,802.11,QAM3,Mbps,载波,速率,nS,GI
来源： https://blog.csdn.net/wgl307293845/article/details/120531241