|
MCS
MCS stands for Modulation Coding Scheme. It is an indicator by which WLAN specifies the data rate for each frame in 802.11n and 802.11ac. This is the technology to change the data rate dynamically. In theory, AP and the device can change the data rate at every physical frame.
MCS for 802.11ac
802.11ac PHY frame carries a field specifying the MCS field. It means it can change the data rate at every radio frame.
Following table is based on 802.11ac-22.5 Parameters for VHT-MCSs. This is a simplified version, you may find several additional parameters for each MCS in 802.11ac specification.
|
VHT
MCS
Index
|
NSS
|
Modulation
|
R
|
20 Mhz
Data Rate (Mbps)
|
40 Mhz
Data Rate(Mbps)
|
80 Mhz
Data Rate(Mbps)
|
160 Mhz
Data Rate(Mbps)
|
|
800 ns
GI
|
400 ns
GI
|
800 ns
GI
|
400 ns
GI
|
800 ns
GI
|
400 ns
GI
|
800 ns
GI
|
400 ns
GI
|
|
0
|
1
|
BPSK
|
1/2
|
6.5
|
7.2
|
13.5
|
15.0
|
29.3
|
32.5
|
58.5
|
65.0
|
|
1
|
1
|
QPSK
|
1/2
|
13.0
|
14.4
|
27.0
|
30.0
|
58.5
|
65.0
|
117.0
|
130.0
|
|
2
|
1
|
PQSK
|
3/4
|
19.5
|
21.7
|
40.5
|
45.0
|
87.8
|
97.5
|
175.5
|
195.0
|
|
3
|
1
|
16-QAM
|
1/2
|
26.0
|
28.9
|
54.0
|
60.0
|
117.0
|
130.0
|
234.0
|
260.0
|
|
4
|
1
|
16-QAM
|
3/4
|
39.0
|
43.3
|
81.0
|
90.0
|
175.5
|
195.0
|
351.0
|
390.0
|
|
5
|
1
|
16-QAM
|
2/3
|
52.0
|
57.8
|
108.0
|
120.0
|
234.0
|
260.0
|
468.0
|
520.0
|
|
6
|
1
|
64-QAM
|
3/4
|
58.5
|
65.0
|
121.5
|
135.0
|
263.3
|
292.5
|
526.5
|
585.0
|
|
7
|
1
|
64-QAM
|
5/6
|
65.0
|
72.2
|
135.0
|
150.0
|
292.5
|
325.0
|
585.0
|
650.0
|
|
8
|
1
|
256-QAM
|
3/4
|
78.0
|
86.7
|
162.0
|
180.0
|
351.0
|
390.0
|
702.0
|
780.0
|
|
9
|
1
|
n/a
|
n/a
|
n/a
|
n/a
|
180.0
|
200.0
|
390.0
|
433.3
|
780.0
|
866.7
|
|
0
|
2
|
BPSK
|
1/2
|
13.0
|
14.4
|
27.0
|
30.0
|
58.5
|
65.0
|
117.0
|
130.0
|
|
1
|
2
|
QPSK
|
1/2
|
26.0
|
28.9
|
54.0
|
60.0
|
117.0
|
130.0
|
234.0
|
260.0
|
|
2
|
2
|
PQSK
|
3/4
|
39.0
|
43.3
|
81.0
|
90.0
|
175.5
|
195.0
|
351.0
|
390.0
|
|
3
|
2
|
16-QAM
|
1/2
|
52.0
|
57.8
|
108.0
|
120.0
|
234.0
|
260.0
|
468.0
|
520.0
|
|
4
|
2
|
16-QAM
|
3/4
|
78.0
|
86.7
|
162.0
|
180.0
|
351.0
|
390.0
|
702.0
|
780.0
|
|
5
|
2
|
16-QAM
|
2/3
|
104.0
|
115.6
|
216.0
|
240.0
|
468.0
|
520.0
|
936.0
|
1040.0
|
|
6
|
2
|
64-QAM
|
3/4
|
117.0
|
130.0
|
243.0
|
270.0
|
526.5
|
585.0
|
1053.0
|
1170.0
|
|
7
|
2
|
64-QAM
|
5/6
|
130.0
|
144.4
|
270.0
|
300.0
|
585.0
|
650.0
|
1170.0
|
1300.0
|
|
8
|
2
|
256-QAM
|
3/4
|
156.0
|
173.3
|
324.0
|
360.0
|
702.0
|
780.0
|
1404.0
|
1560.0
|
|
9
|
2
|
n/a
|
n/a
|
n/a
|
n/a
|
360.0
|
400.0
|
780.0
|
866.7
|
1560.0
|
1733.3
|
|
0
|
3
|
BPSK
|
1/2
|
19.5
|
21.7
|
40.5
|
45.0
|
87.8
|
97.5
|
175.5
|
195.0
|
|
1
|
3
|
QPSK
|
1/2
|
39.0
|
43.3
|
81.0
|
90.0
|
175.5
|
195.0
|
351.0
|
390.0
|
|
2
|
3
|
PQSK
|
3/4
|
58.5
|
65.0
|
121.5
|
135.0
|
263.3
|
292.5
|
526.5
|
585.0
|
|
3
|
3
|
16-QAM
|
1/2
|
78.0
|
86.7
|
162.0
|
180.0
|
351.0
|
390.0
|
702.0
|
780.0
|
|
4
|
3
|
16-QAM
|
3/4
|
117.0
|
130.0
|
243.0
|
270.0
|
526.5
|
585.0
|
1053.0
|
1170.0
|
|
5
|
3
|
16-QAM
|
2/3
|
156.0
|
173.3
|
324.0
|
360.0
|
702.0
|
780.0
|
1404.0
|
1560.0
|
|
6
|
3
|
64-QAM
|
3/4
|
175.5
|
195.0
|
364.5
|
405.0
|
n/a
|
n/a
|
1579.5
|
1755.0
|
|
7
|
3
|
64-QAM
|
5/6
|
195.0
|
216.7
|
405.0
|
450.0
|
877.5
|
975.0
|
1755.0
|
1950.0
|
|
8
|
3
|
256-QAM
|
3/4
|
234.0
|
260.0
|
486.0
|
540.0
|
1053.0
|
1170.0
|
2106.0
|
2340.0
|
|
9
|
3
|
256-QAM
|
5/6
|
260.0
|
288.9
|
540.0
|
600.0
|
1170.0
|
1300.0
|
n/a
|
n/a
|
|
0
|
4
|
BPSK
|
1/2
|
26.0
|
28.9
|
54.0
|
60.0
|
117.0
|
130.0
|
234.0
|
260.0
|
|
1
|
4
|
QPSK
|
1/2
|
52.0
|
57.8
|
108.0
|
120.0
|
234.0
|
260.0
|
468.0
|
520.0
|
|
2
|
4
|
PQSK
|
3/4
|
78.0
|
86.7
|
162.0
|
180.0
|
351.0
|
390.0
|
702.0
|
780.0
|
|
3
|
4
|
16-QAM
|
1/2
|
104.0
|
115.6
|
216.0
|
240.0
|
468.0
|
520.0
|
936.0
|
1040.0
|
|
4
|
4
|
16-QAM
|
3/4
|
156.0
|
173.3
|
324.0
|
360.0
|
702.0
|
780.0
|
1404.0
|
1560.0
|
|
5
|
4
|
16-QAM
|
2/3
|
208.0
|
231.1
|
432.0
|
480.0
|
936.0
|
1040.0
|
1872.0
|
2080.0
|
|
6
|
4
|
64-QAM
|
3/4
|
234.0
|
260.0
|
486.0
|
540.0
|
1053.0
|
1170.0
|
2106.0
|
2340.0
|
|
7
|
4
|
64-QAM
|
5/6
|
260.0
|
288.9
|
540.0
|
600.0
|
1170.0
|
1300.0
|
2340.0
|
2600.0
|
|
8
|
4
|
256-QAM
|
3/4
|
312.0
|
346.7
|
648.0
|
720.0
|
1404.0
|
1560.0
|
2808.0
|
3120.0
|
|
9
|
4
|
n/a
|
n/a
|
n/a
|
n/a
|
720.0
|
800.0
|
1560.0
|
1733.3
|
3120.0
|
3466.7
|
|
0
|
5
|
BPSK
|
1/2
|
32.5
|
36.1
|
67.5
|
75.0
|
146.3
|
162.5
|
292.5
|
325.0
|
|
1
|
5
|
QPSK
|
1/2
|
65.0
|
72.2
|
135.5
|
150.0
|
292.5
|
325.0
|
585.0
|
650.0
|
|
2
|
5
|
PQSK
|
3/4
|
97.5
|
108.3
|
202.5
|
225.0
|
438.8
|
487.5
|
877.5
|
975.0
|
|
3
|
5
|
16-QAM
|
1/2
|
130.0
|
144.4
|
270.0
|
300.0
|
585.0
|
650.0
|
1170.0
|
1300.0
|
|
4
|
5
|
16-QAM
|
3/4
|
195.0
|
216.7
|
405.0
|
450.0
|
877.5
|
975.0
|
1755.0
|
1950.0
|
|
5
|
5
|
16-QAM
|
2/3
|
260.0
|
288.9
|
540.0
|
600.0
|
1170.0
|
1300.0
|
2340.0
|
2600.0
|
|
6
|
5
|
64-QAM
|
3/4
|
292.5
|
325.0
|
607.5
|
675.0
|
1316.3
|
1462.5
|
2632.5
|
2925.0
|
|
7
|
5
|
64-QAM
|
5/6
|
325.0
|
361.1
|
675.0
|
750.0
|
1462.5
|
1625.0
|
2925.0
|
3250.0
|
|
8
|
5
|
256-QAM
|
3/4
|
390.0
|
433.3
|
810.0
|
900.0
|
1755.0
|
1950.0
|
3510.0
|
3900.0
|
|
9
|
5
|
n/a
|
n/a
|
n/a
|
n/a
|
900.0
|
1000.0
|
1950.0
|
2166.7
|
3900.0
|
4333.3
|
|
0
|
6
|
BPSK
|
1/2
|
39.0
|
43.3
|
81.0
|
90.0
|
175.5
|
195.0
|
351.0
|
390.0
|
|
1
|
6
|
QPSK
|
1/2
|
78.0
|
86.7
|
162.0
|
180.0
|
351.0
|
390.0
|
702.0
|
780.0
|
|
2
|
6
|
PQSK
|
3/4
|
117.0
|
130.0
|
243.0
|
270.0
|
526.5
|
585.0
|
1053.0
|
1170.0
|
|
3
|
6
|
16-QAM
|
1/2
|
156.0
|
173.3
|
324.0
|
360.0
|
702.0
|
780.0
|
1404.0
|
1560.0
|
|
4
|
6
|
16-QAM
|
3/4
|
234.0
|
260.0
|
486.0
|
540.0
|
1053.0
|
1170.0
|
2106.0
|
2340.0
|
|
5
|
6
|
16-QAM
|
2/3
|
312.0
|
346.7
|
648.0
|
720.0
|
1404.0
|
1560.0
|
2808.0
|
3120.0
|
|
6
|
6
|
64-QAM
|
3/4
|
351.0
|
390.0
|
729.0
|
810.0
|
1579.0
|
1755.0
|
3159.0
|
3510.0
|
|
7
|
6
|
64-QAM
|
5/6
|
390.0
|
433.3
|
810.0
|
900.0
|
1755.0
|
1950.0
|
3510.0
|
3900.0
|
|
8
|
6
|
256-QAM
|
3/4
|
468.0
|
520.0
|
972.0
|
1080.0
|
2106.0
|
2340.0
|
4212.0
|
4680.0
|
|
9
|
6
|
256-QAM
|
5/6
|
520.0
|
577.8
|
1080.0
|
1200.0
|
n/a
|
n/a
|
4680.0
|
5200.0
|
|
0
|
7
|
BPSK
|
1/2
|
45.5
|
50.6
|
94.5
|
105.0
|
204.8
|
227.5
|
409.5
|
455.0
|
|
1
|
7
|
QPSK
|
1/2
|
91.0
|
101.1
|
189.0
|
210.0
|
409.5
|
455.0
|
819.0
|
910.0
|
|
2
|
7
|
PQSK
|
3/4
|
136.5
|
151.7
|
283.5
|
315.0
|
614.3
|
682.5
|
1228.5
|
1365.0
|
|
3
|
7
|
16-QAM
|
1/2
|
182.0
|
202.2
|
378.0
|
420.0
|
819.0
|
910.0
|
1638.0
|
1820.0
|
|
4
|
7
|
16-QAM
|
3/4
|
273.0
|
303.3
|
567.0
|
630.0
|
1228.5
|
1365.0
|
2457.0
|
2730.0
|
|
5
|
7
|
16-QAM
|
2/3
|
364.0
|
404.4
|
756.0
|
840.0
|
1638.0
|
1820.0
|
3276.0
|
3640.0
|
|
6
|
7
|
64-QAM
|
3/4
|
409.5
|
455.0
|
850.0
|
945.0
|
n/a
|
n/a
|
3685.0
|
4095.0
|
|
7
|
7
|
64-QAM
|
5/6
|
455.0
|
505.6
|
945.0
|
1050.0
|
2047.5
|
2275.0
|
4095.0
|
4550.0
|
|
8
|
7
|
256-QAM
|
3/4
|
546.0
|
606.7
|
1134.0
|
1260.0
|
2457.0
|
2730.0
|
4914.0
|
5460.0
|
|
9
|
7
|
n/a
|
n/a
|
n/a
|
n/a
|
1260.0
|
1400.0
|
2730.0
|
3033.3
|
5460.0
|
6066.7
|
|
0
|
8
|
BPSK
|
1/2
|
52.0
|
57.8
|
108.0
|
120.0
|
234.0
|
260.0
|
468.0
|
520.0
|
|
1
|
8
|
QPSK
|
1/2
|
104.0
|
115.6
|
216.0
|
240.0
|
468.0
|
520.0
|
936.0
|
1040.0
|
|
2
|
8
|
PQSK
|
3/4
|
156.0
|
173.3
|
324.0
|
360.0
|
702.0
|
780.0
|
1404.0
|
1560.0
|
|
3
|
8
|
16-QAM
|
1/2
|
208.0
|
231.1
|
432.0
|
480.0
|
936.0
|
1040.0
|
1872.0
|
2080.0
|
|
4
|
8
|
16-QAM
|
3/4
|
312.0
|
346.7
|
648.0
|
720.0
|
1404.0
|
1560.0
|
2808.0
|
3120.0
|
|
5
|
8
|
16-QAM
|
2/3
|
416.0
|
462.2
|
864.0
|
960.0
|
1872.0
|
2080.0
|
3744.0
|
4160.0
|
|
6
|
8
|
64-QAM
|
3/4
|
468.0
|
520.0
|
972.0
|
1080.0
|
2106.0
|
2340.0
|
4212.0
|
4680.0
|
|
7
|
8
|
64-QAM
|
5/6
|
520.0
|
577.8
|
1080.0
|
1200.0
|
2340.0
|
2600.0
|
4680.0
|
5200.0
|
|
8
|
8
|
256-QAM
|
3/4
|
624.0
|
693.3
|
1296.0
|
1440.0
|
2808.0
|
3120.0
|
5616.0
|
6240.0
|
|
9
|
8
|
n/a
|
n/a
|
n/a
|
n/a
|
1440.0
|
1660.0
|
3120.0
|
3466.7
|
6240.0
|
6933.3
|
NOTE :
NSS indicates the number of Spatial Stream.
R indicates Coding Rate
GI indicates Gard Interval
MCS for 802.11ad
IEEE 802.11ad Table 21-10 Modulation and coding scheme for the control PHY
|
MCS Index
|
Modulation
|
Code Rate
|
Data Rate(Mbps)
|
|
0
|
DBPSK
|
1/2
|
27.5
|
IEEE 802.11ad Table 21-18—Modulation and coding scheme for SC
|
MCS Index
|
Modulation
|
N_CBPS
|
Repetition
|
Code Rate
|
Data Rate (Mbps)
|
|
1
|
|
1
|
2
|
1/2
|
385
|
|
2
|
|
1
|
1
|
1/2
|
770
|
|
3
|
|
1
|
1
|
5/8
|
962.5
|
|
4
|
|
1
|
1
|
3/4
|
1155
|
|
5
|
|
1
|
1
|
13/16
|
1251.25
|
|
6
|
|
2
|
1
|
1/2
|
1540
|
|
7
|
|
2
|
1
|
5/8
|
1925
|
|
8
|
|
2
|
1
|
3/4
|
2310
|
|
9
|
|
2
|
1
|
13/16
|
2502.5
|
|
10
|
|
4
|
1
|
1/2
|
3048
|
|
11
|
|
4
|
1
|
5/8
|
3850
|
|
12
|
|
4
|
1
|
3/4
|
4620
|
IEEE 802.11ad Table 21-14—Modulation and coding scheme for OFDM
|
MCS Index
|
Modulation
|
Code Rate
|
N_BPSC
|
N_CPBS
|
N_DPBS
|
Data Rate(Mbps)
|
|
13
|
SQPSK
|
1/2
|
1
|
336
|
168
|
693.00
|
|
14
|
SQPSK
|
5/8
|
1
|
336
|
210
|
866.25
|
|
15
|
QPSK
|
1/2
|
2
|
672
|
336
|
1386.00
|
|
16
|
QPSK
|
5/8
|
2
|
672
|
420
|
1732.50
|
|
17
|
QPSK
|
3/4
|
2
|
672
|
504
|
2079.00
|
|
18
|
16-QAM
|
1/2
|
4
|
1344
|
672
|
2772.00
|
|
19
|
16-QAM
|
5/8
|
4
|
1344
|
840
|
3465.00
|
|
20
|
16-QAM
|
3/4
|
4
|
1344
|
1008
|
4158.00
|
|
21
|
16-QAM
|
13/16
|
4
|
1344
|
1092
|
4504.50
|
|
22
|
64-QAM
|
5/8
|
6
|
2016
|
1260
|
5197.50
|
|
23
|
64-QAM
|
3/4
|
6
|
2016
|
1512
|
6237.00
|
|
24
|
64-QAM
|
13/16
|
6
|
2016
|
1638
|
6756.75
|
IEEE 802.11ad Table 21-22—Low-power SC modulation and coding schemes
|
MCS Index
|
Modulation
|
Effective Code Rate
|
Coding Scheme
|
N_CPB
|
Rate (Mbps)
|
|
25
|
|
13/28
|
RS(224,208)+Block-Code(16,8)
|
392
|
626
|
|
26
|
|
13/21
|
RS(224,208)+Block-Code(12,8)
|
392
|
834
|
|
27
|
|
52/63
|
RS(224,208)+SPC(9,8)
|
392
|
1112
|
|
28
|
|
13/28
|
RS(224,208)+Block-Code(16,8)
|
392
|
1251
|
|
29
|
|
13/21
|
RS(224,208)+Block-Code(12,8)
|
392
|
1668
|
|
30
|
|
52/63
|
RS(224,208)+SPC(9,8)
|
392
|
2224
|
|
31
|
|
13/34
|
RS(224,208)+Block-Code(8,8)
|
392
|
2503
|
Reference :
[1] IEEE 802.11ac-22.5 Parameters for VHT-MCSs
[2] IEEE 802.11ad
Table 21-10—Modulation and coding scheme for the control PHY
Table 21-18—Modulation and coding scheme for SC
Table 21-14—Modulation and coding scheme for OFDM
Table 21-22—Low-power SC modulation and coding schemes
[3] MCS Index for 802.11n and 802.11ac Chart
|